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Keysight PD1000A

Power Device Bias T for

S-Parameter Measurements

Part of PD1000A Option -SPK Accessory Kit

Bias T Networks

Operating Guide

Summary of Contents for PD1000A

Page 1: ...Keysight PD1000A Power Device Bias T for S Parameter Measurements Part of PD1000A Option SPK Accessory Kit Bias T Networks Operating Guide ...

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Page 3: ...KEYSIGHT DISCLAIMS ALL WAR RANTIES EITHER EXPRESS OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MER CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING USE OR PERFORMANCE OF THIS DOCUMENT OR OF ANY INF...

Page 4: ...lved should remove instrument covers Always disconnect the power cable and any external circuits before removing the instrument cover Keep away from live circuits Operating personnel must not remove equipment covers or shields Proce dures involving the removal of covers and shields are for use by service trained personnel only Under certain conditions dangerous voltages may exist even with the equ...

Page 5: ...uipment WEEE Directive 2002 96 EC This product complies with the WEEE Directive 2002 96 EC marking requirement The affixed product label see below indicates that you must not discard this electrical electronic prod uct in domestic household waste Product Category With reference to the equipment types in the WEEE directive Annex 1 this product is clas sified as a Monitoring and Control instrumentat...

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Page 7: ...12 Using the Bias Ts 13 Use with PD1000A Power Device Measurement System 15 PD1000A with TO 220 and TO 247 Device Style Test Fixtures 15 PD1000A Surface Mount Device SMD Test Fixture 16 Connecting the PD1000A Bias Ts to a Keysight B2902A SMU 17 General Test Setup 18 Performance Tests 19 Return Loss of Input and Output Ports 19 Insertion Loss 19 Use Proper SMA Connector Care and Connection Techniqu...

Page 8: ...viii Keysight PD1000A Bias T Network Operating Guide ...

Page 9: ...warranty Returning for Service If you need to return the Bias T networks for service attach a tag indicating the type of service required your return address and model number of the device to be repaired Repackaging the device requires original shipping containers and materials or their equivalents Keysight Technologies can provide packaging materials identical to the original materials Contact Ke...

Page 10: ...n 8710 1582 1 Type N Male to SMA Female Adapter 50Ω Nominal Keysight p n 1250 2879 2 SMA male to SMA Male Cable Keysight p n 5062 6682 7 inch cable 2 Stackable Banana Plug each end Cables Keysight p n 8121 2006 Black cable 8121 2007 Red cable 8 4 red and 4 black PD1000A Test Fixture for TO 220 style devices Keysight p n PD1000 67900 Keysight p n PD1000 67905 Calibration Standards PD1000A Test Fixt...

Page 11: ... wrist strap combination provides adequate ESD protection when used alone To ensure user safety the static safe accessories must provide at least 1 MΩ of isolation from ground PD1000A Specifications Specifications describe warranted performance of the device Table 1 PD1000A Bias T Specifications Parameter PD1000A Typical Impedance 50 Ω Maximum Voltage 42 V Maximum Current 5 A Resistance bias input...

Page 12: ...12 Keysight PD1000A Bias T Operating Guide PD1000A Specifications PD1000A Bias T Networks Frequency Response Bias T used for Gate Bias T used for Drain Collector ...

Page 13: ...through acts as a dc block high pass filter The series inductance acts as a low pass filter On the Bias T networks the V terminal connects to the Source Measure Unit SMU Vout or Vforce and the Vsense terminals Stack the banana plugs at the Bias T device for the Sense connections See Figure 5 on page 17 Two Bias T devices are provided in the accessory kit Figure 1 PD1000A Bias T Network Schematic D...

Page 14: ...ssible the general method of setup and operation is the same Figure 2 Typical simplified Measurement Setup When an RF cable more than 50 cm 19 6 in in length is used a 50 Ω 1 dB attenuator should be inserted at the RF Input Connector When a bias voltage is applied to the network both the RF input and the RF output terminals must be terminated at 50 Ω to prevent oscillations ...

Page 15: ...as for semiconductor devices Specifically they are designed for use with the PD1000A Test Fixtures The following diagrams show how to connect the bias networks to the Test Fixtures PD1000A with TO 220 and TO 247 Device Style Test Fixtures Make sure the SMA connectors are properly supported and level with the test fixture Relieve any side pressure on the connection from long or heavy devices or cab...

Page 16: ...1000A Bias T Operating Guide Use with PD1000A Power Device Measurement System PD1000A Surface Mount Device SMD Test Fixture Figure 4 PD1000A Bias T Networks with PD1000A SMD Test Fixture SMA Connectors SMA Connectors ...

Page 17: ...s to the PD1000A Bias T for the RF input Gate to the device under test DUT Channel 2 on the SMU rear panel connects to the PD1000A Bias T for the RF output drain or collector of the DUT Figure 5 PD1000A Bias T Networks Connected to the B2902A SMU B2902A CH2 Rear Panel to Drain Collector Bias T B2902A CH1 Front Panel to Gate Bias T PD1000A Bias T for the Gate PD1000A Bias T for Drain or Collector P...

Page 18: ...B2902A Precision SMU on top of the E2080A ENA providing bias voltage to the two Bias T networks Figure 6 General Test Setup for the PD1000A S Parameter Test System Do not excessively bend flex or stretch the SMA cables Check the SMA cables regularly and replace them if they are damaged in any way It is possible for the outside shielding of the cables to break B2902A SMU E5080A ENA Device Test Fixt...

Page 19: ...rts The following instructions apply to both vector and scalar network analyzers 1 Connect the equipment for a standard reflection measurement 2 Calibrate the system with an open and a short 3 Connect the appropriate RF port of the PD1000A Bias T Network to the test port Terminate the opposite port with a 50 Ω load 4 Measure the return loss The specifications are listed in PD1000A Specifications o...

Page 20: ...__________________________________ Test Date ___________________________________________ Tested By ___________________________________________ Return Loss PD1000A Measured Value 0 0 to 1GHz _____________________________________________________ Insertion Loss 0 0 to 3 GHz _____________________________________________________ ...

Page 21: ... yourself and all devices Wear a grounded wrist strap and work on a grounded conductive table mat 2 Visually inspect the connectors If necessary clean the connectors 3 Carefully align the connectors As you make the actual connection be sure the connectors align perfectly 4 Push the connectors straight together Do not twist or screw the connectors together 5 Engage the connector nut of the connecto...

Page 22: ...f one of the connectors is fixed as on a test port However it is recommended that you use a second open end wrench to keep the body of the device from turning 2 Position both wrenches within 90 degrees of each other before applying force Wrenches opposing each other greater than 90 degrees apart will cause a lifting action that can misalign and stress the connections of the device involved This is...

Page 23: ...onnections To avoid lateral bending force on the connector mating plane surfaces always support the devices and connections 1 Use an open end wrench or spanner wrench to prevent the device body from turning 2 Use another open end wrench or the torque wrench to loosen the connector nut 3 Complete the separation by hand turning only the connector nut 4 Pull the connectors straight apart without twis...

Page 24: ...nt free swab Clean the connector threads Let the alcohol evaporate then blow the threads dry with a gentle stream of clean low pressure compressed air or nitrogen Always completely dry a connector before you reassemble or use it Always use protective eye wear when using compressed air or nitrogen Keep isopropyl alcohol away from heat sparks and flame Store in a tightly closed container Isopropyl a...

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Page 26: ...This information is subject to change without notice Keysight Technologies 2018 Printed in Malaysia Edition 1 February 2018 PD1000 90004 PD1000 90004 www keysight com ...

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