Texas Instruments TRF1500 Documentation Download

Page: 1 / 74

Evaluation Board Documentation

TRF1500 Integrated Dual-Band
RF Receiver User’s Guide

APPLICATION BRIEF: SWRA004A

Wireless Communications Business Unit

Digital Signal Processing Solutions
July 98

Summary of Contents for TRF1500

Page 1: ...Evaluation Board Documentation TRF1500 Integrated Dual Band RF Receiver User s Guide APPLICATION BRIEF SWRA004A Wireless Communications Business Unit Digital Signal Processing Solutions July 98 ...

Page 2: ...NED INTENDED AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE SUPPORT APPLICATIONS DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS Inclusion of TI products in such applications is understood to be fully at the risk of the customer Use of TI products in such applications requires the written approval of an appropriate TI officer Questions concerning potential risk applications should be dir...

Page 3: ...TRADEMARKS TI is a trademark of Texas Instruments Incorporated Other brands and names are the property of their respective owners ...

Page 4: ...CONTACT INFORMATION PIC TELEPHONE 972 644 5580 PIC FAX 972 480 7800 HP SUPPORT LINE 972 480 7872 PIC email sc infomaster ti com ...

Page 5: ...put 23 Low Band LO Buffer Amplifier Output 24 Low Band Cascaded Test Guide 26 LOW Band Cascaded Power Conversion Gain 26 Low Band Cascaded Power Conversion Gain Reduction 27 Low Band Cascaded Noise Figure 28 Low Band Cascaded RF Input Return Loss 30 Low Band Cascaded LO Input Return Loss 30 LOW BAND LO Buffer Output Power 31 Low Band Power Leakage LO In to RF In 31 Low Band Cascaded Third Order In...

Page 6: ...it Mixer Power Leakage LO In to TX In 55 Low Band Transmit Mixer Power Leakage TX In to LO In 55 Low Band Transmit Mixer 1dB Input Compression Point 56 Low Band Transmit Mixer Second Order Input Intercept Point IIP2 57 Low Band Transmit Mixer Third Order Input Intercept Point IIP3 58 High Band Transmit Mixer Test Guide 59 Low Band LNA Stand Alone Test Guide 60 Low Band LNA Gain 60 Low Band LNA Inp...

Page 7: ...9 Low and High Band Transmit Mixer IF Output Configuration 51 Figure 20 Test Bench Setup Power Conversion Gain Power Conversion Gain Reduction 1dB RF Input Compression Point Second Order Input Intercept Point IIP2 2x2 Spur Performance 3x3 Spur Performance Image rejection and LO Buffer Output Power 72 Figure 21 Test Bench Setup Third Order Input Intercept Point IIP3 1dB Blocking Point Measurements ...

Page 8: ...rer to be innovative while keeping costs low To meet this demand Texas Instruments TI has developed the TRF1500 receiver The TRF1500 is a fully integrated dual band receiver in a single package The selection of the external components and the layout of the system board required to complete a transceiver design are critical to achieve maximum performance This application report discusses the implem...

Page 9: ...customizable platform helps wireless digital telephone manufacturers lower component counts save board space reduce power consumption introduce new features save development costs and achieve faster time to market at the same time giving them flexibility and performance to support any standard worldwide Analog Baseband TI analog baseband components provide a Mixed signal bridge between the real wo...

Page 10: ...WS041A World Wide Web Our World Wide Web site at www ti com contains the most up to date product information revisions and additions Users registering with TI ME can build custom information pages and receive new product updates automatically via email Email For technical issues or clarification on switching products please send a detailed email to sc infomaster ti com Questions receive prompt att...

Page 11: ...leep mode where the device typically draws less than 5µA Additionally the local oscillator LO inputs have buffered outputs that can be used in either single ended or differential mode for a phase locked loop PLL configuration A state is also available that allows the low band LO to serve as the high band LO through a mode selectable frequency doubler A wide band mixer is also available for transmi...

Page 12: ... size and cost Board Design and Impedance Matching The quality of the board layout is also critical to the TRF1500 performance Correct transmission line impedances must be maintained throughout the design to insure maximum performance Correct transmission line impedances can be maintained by using proper line widths and board stack up in relation to the dielectric constant of the board material Ut...

Page 13: ...verter is shown in Figure 1 Pin names and descriptions are provided in Table 1 The device operates from a single 3 75 volt supply and its operation is controlled by 6 digital CMOS control lines the TRF1500 operates in 18 different states The control codes and the corresponding active circuits are given in Table 2 Figure 1 TRF1500 Dual Band Receiver Block Diagram ...

Page 14: ...nd IF inverting output 17 LOW BAND IF Low band IF noninverting output 18 LOW BAND IF Low band IF inverting output 19 GND ground 20 HIGH BAND LO High band noninverting LO output 21 HIGH BAND LO High band inverting LO output 22 LOW BAND LO Low band noninverting LO output 23 LOW BAND LO Low band inverting LO output 24 RX ON Low noise amplifier mixer power control 25 VCC Vcc 26 TX ON Transmit mixer dr...

Page 15: ...NG SIGNAL Strong signal indication 39 GND ground 40 VCC VCC 41 GND ground 42 LNA IN HIGH BAND High band LNA input 43 LNA IN LOW BAND Low band LNA input 44 GND ground 45 LNA OUT LOW BAND Low band LNA output 46 GND ground 47 GND ground 48 IR ADJUST C Image rejection adjustment ...

Page 16: ...B LO Buffer LB LNA On High LB Mixer 010001 Doubler On LB LO Buffer Frequency Doubler HB LO Buffer 011001 Low Band Receive Normal Doubler On LB LO Buffer LB LNA LB Mixer Frequency Doubler 011011 Low Band Receive Strong Signal Doubler On LB LO Buffer LB Mixer Frequency Doubler 011111 Low Band Transmit Doubler On LB LO Buffer LB LNA On High LB Mixer LB TX Mixer 111011 High Band Receive Strong Signal ...

Page 17: ...ent in which the TRF1500 is operating The device can be operated in the normal state where the LNA mixer and buffer amplifier are on the strong signal state where the LNA is off and the mixer and buffer amplifier are on or the transmit state where the LNA bias current is increased to prevent compression when the transmitter is on The low band receiver has low typical current consumption of 21mA at...

Page 18: ...ar the base station Operating near the base station in the normal state could cause an increase in the intermodulation product levels and thus cause undesired noise and distortion in the receiver Stand alone LNA performance can be ascertained by reconfiguring the evaluation board as noted on the datasheet Low Band LNA Turn on Time The turn on time can be adjusted by changing the values of C10 R6 a...

Page 19: ...ct on matching and is used mainly to optimize the turn on time Figure 4 Low Band LNA Input Configuration Low Band LNA Output Figure 5 details the LNA output configuration The LNA output impedance matching network has several functions The matching network optimizes the third order input intercept point IIP3 performance while also matching the LNA output impedance to the Surface Acoustic Wave SAW f...

Page 20: ...ts this image before the RF signal is introduced to the mixer By minimizing the image before it reaches the mixer the sensitivity of the receiver is enhanced To further minimize potential interferers a band select filter is typically used at the front of the receiver before the LNA The band select filter passes only those frequencies that fall within the system receive band In many TDMA systems th...

Page 21: ...tion of the TRF1500 is a Gilbert cell design with open collector outputs The Gilbert cell structure was used for its robust isolation and harmonic suppression characteristics The TRF1500 mixer typically achieves a noise figure of 7 5 dB with an input third order intercept point of 3 5 dBm Stand alone mixer performance can be ascertained by reconfiguring the evaluation board as noted on the datashe...

Page 22: ...kΩ differential output to a single ended output which is then matched to 50Ω In the actual application the IF output is usually connected to a narrow band channel select filter with a differential input and the transformer balun is not required The supply voltage VCC is applied to the IF pins with pull up inductors L12 L13 A low pass filter network is provided prior to the balun The filter also ac...

Page 23: ...t to a single ended output The series capacitors at the buffer output are used for dc blocking The transmission line on the output of the buffer amplifier are used to convert the 100Ω differential to 50Ω differential The transmission lines on the output of the buffer amplifier can be modeled as microstrip lines The values used for the calculations depend on the PCB substrate the board stackup and ...

Page 24: ...SWRA004A TRF1500 Integrated Dual Band RF Receiver User s Guide 25 Figure 10 Low Band Buffer Amplifier Output Configuration ...

Page 25: ...e 979 52 992 02 1004 52 MHz IF Frequency 110 52 MHz RF Input Power 30 dBm LO Input Power 5 dBm Power Conversion Gain 26 0 dB Power Conversion Gain Reduction 19 0 dB Noise Figure 2 5 dB RF Input Return Loss 5 6 dB LO Input Return Loss 16 5 dB LO Buffer Output Power 10 3 dBm Power Leakage LO In to RF In 53 0 dBm Third Order Input Intercept Point IIP3 9 7 dBm 1dB RF Input Compression Point 21 0 dBm 1...

Page 26: ... bias condition near the ideal operating region at the base of the common emitter amplifier By providing this bias condition the charge time of the series capacitor C10 can be adjusted Changing the value of resistors should not affect gain IIP3 or noise figure NF performance Low Band Cascaded Power Conversion Gain Reduction Control state 011010 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 20...

Page 27: ...ted from differential to single ended using a transformer balun The noise figure meter requires a special setup and calibration since the RF source and receive frequencies are different Set up the noise figure meter as follows 1 Special Function 1 4 sets the noise figure meter to measure variable IF and fixed LO frequencies 2 The IF start stop and step size frequencies are set to 100MHz 120MHz and...

Page 28: ...ion 34 0 is used to turn off the loss compensation factor The noise figure is measured as follows 7 Connect the noise source directly to the EVM RF input port J10 a A circulator between the noise source and RF input port may help minimize any mismatches between the EVM board and test equipment 8 Connect the LO source to the EVM LO input port J12 a Set the LO source at the nominal power and frequen...

Page 29: ...1 of the network analyzer 4 Set the network analyzer to measure S11 5 Connect the EVM RF input J10 to port 1 of the network analyzer 6 Measure the RF input return loss Low Band Cascaded LO Input Return Loss Control state 011000 The cascaded LO input return loss of the Low Band is measured at the EVM low band LO input port J12 The measurement is performed using a network analyzer 1 Set the network ...

Page 30: ...rce to the EVM LO input port J12 2 Set the spectrum analyzer to measure at the LO frequency see Table 3 3 Connect the EVM LO buffer port J13 to the spectrum analyzer 4 Measure the LO buffer output power Low Band Power Leakage LO In to RF In Control state 011000 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 23 The LO leakage at the RF port is measured at the low band RF input port J10 Power le...

Page 31: ...second RF source frequency to the first RF frequency plus 60kHz F2 3 Using a RF combiner connect the RF sources to the EVM RF input port J10 4 Set the LO source frequency and input power see Table 3 Connect the LO source to the EVM LO input port J12 5 Set the spectrum analyzer to measure at the IF frequency FIF see Table 3 6 Connect the EVM IF output port J11 to the spectrum analyzer 7 Measure the...

Page 32: ...he input power Pin to 35 dBm Connect the RF source to the EVM RF input port J10 2 Set the LO source frequency and input power see Table 3 Connect the LO source to the EVM LO input port J12 3 Set the spectrum analyzer to measure the output power at the IF frequency 4 Connect the EVM IF output port J11 to the spectrum analyzer 5 Measure the output power Pout at the IF frequency 6 Calculate Gain as G...

Page 33: ... frequency to the RF frequency minus 45 MHz at 30dBm input power 3 Using a RF combiner connect the RF sources to the EVM RF port J10 4 Set the LO source frequency and input power see Table 3 Connect the LO source to the EVM LO input port J12 5 Set the spectrum analyzer to measure the output power at the IF frequency 6 Connect the EVM IF port J11 to the spectrum analyzer 7 To determine the 1dB Bloc...

Page 34: ...side the dotted box The digital control allows the high band receiver to operate in three different states to compensate for the environment in which the TRF1500 is operating The high band receiver can be operated in the normal state where the LNA mixer and buffer amplifier are on the strong signal state where the LNA is off and the mixer and buffer amplifier are on or the transmit state where the...

Page 35: ...re performance Figure 12 High Band RF Input Configuration High Band LO Input The high band LO signal is fed through a buffer amplifier into a differential quadrature generator which is realized using a polyphase network The signals generated by the polyphase network are used to drive two mixers which are injected with a common RF signal The IF signals out of these mixers will have a 180 phase shif...

Page 36: ...f the doubler is routed through an external capacitor C40 and into the single ended high band LO input Figure 14 details the TRF1500 configured to utilize the high band LO The signal is directly injected into the high band LO input which directly drives the high band down converter Note To use the high band LO input remove C40 and L40 and change the value of C41 to 1pF and populate C24 Figure 13 H...

Page 37: ...connected to a narrow band channel select filter with a differential input and the transformer balun is not required The supply voltage VCC is applied to the IF terminals with pull up inductors L21 L22 A low pass filter network is provided prior to the balun The filter also acts as part of the impedance matching network The IF response is shaped by the shunt L L52 after the transformer balun L52 i...

Page 38: ...cking The transmission line on the output of the buffer amplifier are used to convert the 100Ω differential to 50Ω differential The transmission lines on the output of the buffer amplifier can be modeled as microstrip lines The values used for the calculations depend on the PCB substrate the board stackup and the required impedance The physical dimensions of the microstip lines can be calculated w...

Page 39: ...035 26 1050 26 MHz IF Frequency 110 52 MHz RF Input Power 30 dBm LO Input Power 5 dBm Power Conversion Gain 26 3 dB Power Conversion Gain Reduction 43 5 dB Image Rejection 22 5 dB Noise Figure 4 66 dB RF Input Return Loss 14 2 dB LO Buffer Output Power 14 dBm Power Leakage LO In to RF In 50 dBm Third Order Input Intercept Point IIP3 17 7 dBm 1dB RF Input Compression Point 23 7 dBm 2X2 Spur Perform...

Page 40: ... the delta between the cascaded IF Pout and the strong signal IF Pout when the strong signal is enabled Enabling the strong signal turns off the LNA It is measured using a RF source and a spectrum analyzer 1 Set the RF source power RF Pin and the desired frequency see Table 4 Connect the RF source to the EVM RF input port J20 2 Set the LO source power LO Pin and the desired frequency see Table 4 C...

Page 41: ... RF frequency FRF see Table 4 Connect the RF source to the EVM RF input port J20 2 Set the LO source power LO Pin and the desired LO frequency FLO see Table 4 Connect the LO source to the EVM LO input port J12 3 Set the spectrum analyzer to measure at the IF frequency FIF see Table 4 4 Connect the EVM IF output port J21 to the spectrum analyzer 5 Measure the output power at the IF frequency IF Pou...

Page 42: ...ep size frequencies are set to 100MHz 120MHz and 5MHz respectively 3 Set the smoothing to 16 or above 4 Ensure that the Excess Noise Ratio ENR Table on the Noise Source head in use is entered on the NF meter a On the front panel press the ENR button b Check the ENR value by pressing the Enter button or enter the ENR value for each frequency c After entering the ENR for the desired frequency press ...

Page 43: ...rce to the EVM LO input port J12 a Set the LO source at the nominal power and frequency See Table 4 b Each LO frequency being tested is entered in the Noise figure meter by using Special function 3 1 If the source has excessive broad band noise a filter at the LO port J12 may be necessary to eliminate the broad band noise during testing 9 Connect the EVM IF output port J21 to the noise figure mete...

Page 44: ...te 111001 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 20 This section involves measuring the Low Band LO Buffer Output All unused ports will be terminated into 50 Ω The LO buffer output power is measured at the EVM low band LO output port J23 A transformer balun is used to convert the differential output to a single ended output The measurement is performed using a RF source and a spectrum ...

Page 45: ...r 4 Measure the LO leakage power High Band Cascaded Third Order Input Intercept Point IIP3 Control state 111001 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 21 The third order input intercept point is the level of the RF input power at which the output power levels of the undesired intermodulation products and the desired IF products are equal The measurement is performed using three RF sour...

Page 46: ... RF input power at which the gain compresses 1 dB Gain compression is when an increase in Pin causes no further increase in the output power Pout The measurement is performed using two RF sources and a spectrum analyzer 1 Set the RF source frequency see Table 4 and the input power Pin to 35 dBm Connect the RF source to the EVM RF input port J20 2 Set the LO source frequency and input power see Tab...

Page 47: ... output port J21 The measurement is performed using two sources and a spectrum analyzer 1 Set the RF source frequency FRF and input power see Table 4 Connect the RF source to the EVM RF input port J20 2 Set the LO source frequency and input power see Table 4 Connect the LO source to the EVM LO input port J12 3 Set the spectrum analyzer to measure the output power at the IF frequency FIF 4 Connect ...

Page 48: ...quency FRF and input power see Table 4 Connect the RF source to the EVM RF input port J20 2 Set the LO source frequency and input power see Table 4 Connect the LO source to the EVM LO input port J12 3 Set the spectrum analyzer to measure the output power at the IF frequency FIF 4 Connect the EVM IF output port J21 to the spectrum analyzer 5 Measure the output power 1 Pout at the IF frequency 6 Set...

Page 49: ... MHz to 2GHz and thus requires minimal external matching The mixer is a double balanced Gilbert cell design with open collector outputs The Gilbert cell structure was implemented for its robust isolation and harmonic suppression characteristics Figure 17 Transmit Mixer Block Diagram Low Band and High Band Transmit Mixer RF Input Figure 18 details the transmit mixer RF input configuration The trans...

Page 50: ...utput to a single ended output which is then matched to 50Ω The supply voltage VCC is applied to the IF pins with pull up inductors L30 L31 A low pass filter network is provided prior to the balun This filter also acts as part of the impedance matching network The IF response is shaped by the shunt inductor L50 after the transformer balun L50 is also used to block unwanted noise that could be refl...

Page 51: ...ersion Gain 19 dB Noise Figure 7 8 dB Input Return Loss 9 8 dB Power Leakage LO In to Tx In 49 dB Power Leakage Tx In to LO In 70 6 dB 1dB Input Compression Point 20 dBm Second Order Input intercept Point IIP2 29 5 dBm Third Order Input Intercept Point IIP3 11 5 dBm Low Band Transmit Mixer Power Conversion Gain Control state 010100 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 20 The low band...

Page 52: ...ial to single ended using a transformer balun The noise figure meter requires a special setup and calibration since the RF source and receive frequencies are different Set up the noise figure meter as follows 1 Special Function 1 4 sets the noise figure meter to measure variable IF and fixed LO frequencies 2 The IF start stop and step size frequencies are set to 114MHz 120MHz and 3MHz respectively...

Page 53: ...is used to enter the loss after the DUT e Special Function 34 0 is used to turn off the loss compensation factor The noise figure is measured as follows 7 Connect the noise source directly to the EVM RF input port J30 8 Connect the LO source to the EVM LO input port J12 a Set the LO source at the nominal power and frequency See Table 5 b Each LO frequency being tested is entered in the Noise figur...

Page 54: ...In port is measured at the low band TX input port J30 Power leakage is a measure of power in dBm that couples to the TX port The measurement is performed using a RF source and a spectrum analyzer 1 Set the LO source frequency and input power see Table 5 Connect the LO source to the EVM LO input port J12 2 Set the spectrum analyzer to measure at the LO frequency see Table 5 3 Connect the TX In Port...

Page 55: ...urther increase in the output power Pout The measurement is performed using two RF sources and a spectrum analyzer 1 Set the TX RF source frequency see Table 5 and the input power Pin to 35 dBm Connect the RF source to the EVM RF input port J30 2 Set the LO source frequency and input power see Table 5 Connect the LO source to the EVM LO input port J12 3 Set the spectrum analyzer to measure the out...

Page 56: ...odulation products and IF products are equal The second order intercept point is measured at the IF output port J31 1 Set the RF source input power RF Pin and frequency see Table 5 2 Set the LO source input power and frequency see Table 5 Connect the LO source to the EVM LO input port J12 3 Set the spectrum analyzer to measure at the IF frequency see Table 5 4 Connect the EVM IF output port J31 to...

Page 57: ...he second RF source frequency to the first RF frequency plus 60kHz F2 3 Using a RF combiner connect the RF sources to the EVM RF input port J30 4 Set the LO source frequency and input power see Table 5 Connect the LO source to the EVM LO input port J12 5 Set the spectrum analyzer to measure at the IF frequency FIF see Table 5 6 Connect the EVM IF output port J31 to the spectrum analyzer 7 Measure ...

Page 58: ...h band transmit to be directly driven by an LO source Table 6 High Band Transmit Mixer Performance Parameters PARAMETERS Min Typ Max UNIT Tx Mixer Input Frequency 1850 1880 1910 MHz LO Frequency Directly Driven 1733 1763 1793 MHz LO Frequency Doubler Driven 983 5 998 5 1013 5 MHz Tx Mixer Output Frequency 117 MHz LO Input Power 5 0 dBm RF Input Power 30 dBm Power Conversion Gain 9 9 dB Noise Figur...

Page 59: ... Output return loss 14 dB Isolation 17 2 dB Noise Figure 1 8 dB Third Order Input Intercept Point IIP3 3 dBm 1dB Input compression Point 13 5 dBm Low Band LNA Gain Control state 011000 The LNA gain is measured from the input port J10 through the output port J15 The measurement is performed using a network analyzer 1 Set up the network analyzer to measure the low band RF frequency range see Table 7...

Page 60: ...ion performed above set the network analyzer to measure S12 Low Band LNA 1dB Input Compression Point Control state 011000 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 27 The 1 dB input compression point is the RF input power at which the gain compresses 1 dB and when an increase in Pin causes no further increase in the output power Pout The measurement is performed using two RF sources and a...

Page 61: ...nt 20 7 0 13 0 Low Band LNA Noise Figure Control state 011000 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 25 The LNA Noise Figure NF is measured at the LNA output port J15 The measurement is performed using an HP8970B Noise Figure Meter 1 Set up the Noise figure meter as follows 2 Set start stop frequency see Table 7 and the step size to 12 5 MHz 3 Set the smoothing to 16 or above 4 Insure ...

Page 62: ... using special function 34 x a Special Function 34 1 turns on the Loss compensation factor b Special Function 34 2 is used to enter the loss before the DUT c Special Function 34 3 is used to enter the room temperature in Kelvin 300 K d Finally Special Function 34 4 is used to enter the loss after the DUT e Special Function 34 0 is used to turn off the loss compensation factor The noise figure is m...

Page 63: ...rce frequency to the first RF frequency plus 60kHz F2 3 Using a RF combiner connect the RF sources to the EVM RF input port J10 4 Set the spectrum analyzer to measure at the RF frequency F1 see Table 7 5 Connect the EVM IF output port J11 to the spectrum analyzer 6 Measure the Fundamental output power at the RF frequency FFund 7 Measure the Intermodulation products 2F2 F1 or 2F1 F2 at FIF 60 kHz 8...

Page 64: ...wer Conversion Gain 12 dB RF Input Return Loss 9 dB Power Leakage LO In at RF In 50 dB Noise Figure 7 5 dB 1dB Input Compression Point 6 dBm Third Order Input Intercept Point IIP3 3 5 dBm Low Band Receiver Mixer Power Conversion Gain Control state 011000 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 20 The receiver mixer conversion gain dB is the measured power dBm at the IF frequency minus t...

Page 65: ...put power is set to 30 dBm Perform a full one port or two port calibration Set the network analyzer to measure S11 To measure the receiver mixer input return loss connect the RF input port J15 to S11 port of the network analyzer The input return loss of the low band mixer is measured at the low band mixer input port J15 The measurement is performed using a network analyzer Set up the network analy...

Page 66: ...akage power Low Band Receiver Mixer Noise Figure Control state 011000 SEE APPENDIX A TEST BENCH SETUPS Test setup Figure 22 The low band mixer Noise Figure NF is measured at the EVM Low Band IF output port J11 The measurement is performed using an HP8970B Noise Figure Meter The IF output of the mixer is converted from differential to single ended using a transformer balun The noise figure meter re...

Page 67: ... Noise Figure Meter by using special function 34 x a Special Function 34 1 turns on the loss compensation factor b Special Function 34 2 is used to enter the loss before the DUT c Special Function 34 3 is used to enter the room temperature in Kelvin 300 K d Special Function 34 4 is used to enter the loss after the DUT e Special Function 34 0 is used to turn off the loss compensation factor The noi...

Page 68: ...an increase in Pin causes no further increase in the output power Pout The measurement is performed using two RF sources and a spectrum analyzer 1 Set the Mixer RF source frequency see Table 8 and the input power Pin to 35 dBm Connect the RF source to the EVM RF input port J15 2 Set the LO source frequency and input power see Table 8 Connect the LO source to the EVM LO input port J12 3 Set the spe...

Page 69: ...e measurement is performed using three RF sources and a spectrum analyzer 1 Set the first RF source input power RF Pin and frequency F1 see Table 8 2 Set the second RF source frequency to the first RF frequency plus 60kHz F2 3 Using a RF combiner connect the RF sources to the EVM RF input port J15 4 Set the LO source frequency and input power see Table 8 Connect the LO source to the EVM LO input p...

Page 70: ...egrated Dual Band RF Receiver User s Guide 71 Intermodulation Suppression FFund Intermodulation product 10 Calculate the Input Third Order Intercept Point as Input Third Order Intercept Intermodulation Suppression 2 RF Pin ...

Page 71: ... Intercept Point IIP2 2x2 Spur Performance 3x3 Spur Performance Image rejection and LO Buffer Output Power RF SIGNAL SOURCE DUT SPECTRUM ANALYZER DC POWER SUPPLY DC POWER METER LO SIGNAL SOURCE RF IN LO IN IF OUT Figure 21 Test Bench Setup Third Order Input Intercept Point IIP3 1dB Blocking Point Measurements RF SIGNAL SOURCE RF SIGNAL SOURCE DUT SPECTRUM ANALYZER LO SIGNAL SOURCE DC POWER SUPPLY ...

Page 72: ...st Bench Setup Noise Figure NOISE FIGURE METER DUT LO SIGNAL SOURCE RF IN IF OUT LO IN DC POWER SUPPLY DC POWER METER NOISE SOURCE Figure 23 Test Bench Setup Power Leakage LO In to RF In 50 Ω DUT SPECTRUM ANALYZER LO SIGNAL SOURCE DC POWER SUPPLY DC POWER METER RF IN LO IN IF OUT ...

Page 73: ...ench Setup Power Leakage RF In to LO In Measurements 50 Ω SPECTRUM ANALYZER RF SIGNAL SOURCE DC POWER SUPPLY DC POWER METER RF IN LO IN IF OUT DUT Figure 25 Test Bench Setup LNA Noise Figure Measurements DC POWER SUPPLY DC POWER METER RF IN NOISE FIGURE METER NOISE SOURCE RF OUT DUT ...

Page 74: ...NA Third Order Input Intercept Point IIP3 Measurement RF SIGNAL SOURCE RF SIGNAL SOURCE DC POWER SUPPLY DC POWER METER RF IN RF OUT SPECTRUM ANALYZER DUT Figure 27 Test Bench Setup LNA 1dB Input Compression Point DC POWER SUPLLY DC POWER METER RF IN RF SIGNAL SOURCE RF OUT SPECTRUM ANALYZER DUT ...

Search results

Summary of Contents for TRF1500

Reviews:

Related manuals for TRF1500

Brands by name

Popular brands

Texas Instruments TRF1500, Documentation

Search results

Summary of Contents for TRF1500

Reviews:

Related manuals for TRF1500

Brands by name

Popular brands