
B I A S T E E
B I A S T E E
1 0
1 0
A T T E N U A T O R
F I X T U R E
A T T E N U A T O R
Figure 6-54. Typical Measurement Set up
If the device measurement requires bias, it will be necessary to add external bias tees between
the
attenuators and the fixture. The internal bias tees of the analyzer will not pass the
bias properly through the external
attenuators, Be sure to calibrate with the external bias
tees in place (no bias applied during calibration) to remove their effect from the measurement.
Because the bias tees must be placed after the attenuators, they essentially become part of the
fixture. Their mismatch effects are the same for source match and load match, so the TRL CAL
routine will correct for their effects Although the fixed attenuators improve the raw mismatch
of the network analyzer system, they also degrade the
measurement dynamic range.
This effective mismatch of the system after calibration has the biggest effect on reflection
measurements of highly reflective devices, Likewise, for well matched devices, the effects of
mismatch are negligible. This can be shown by the following approximation:
Reflection magnitude uncertainty
+
+
+
Transmission magnitude uncertainty = +
+
+
where:
En = effective directivity
En = effective reflection tracking
Es = effective source match
= effective load match
effective crosstalk
= effective transmission tracking
= S-parameters of the device under test
Application and
Concepts
Содержание HP 8753E
Страница 61: ......
Страница 138: ...Figure 2 62 aw000024 Gating Effects in a Frequency Domain Example Measurement Making Measurements 2 87 ...
Страница 150: ......
Страница 174: ...Figure 3 23 Example Swept Power Conversion Compression Measurement 3 32 Making Mixer Measurements ...
Страница 187: ......
Страница 197: ...4 l 8 Printing Plotting and Saving Measurement Results ...
Страница 245: ......
Страница 249: ......
Страница 256: ......
Страница 277: ...4 lb enter the number of sweeps press Optimizing Measurement Results 5 55 ...
Страница 399: ......
Страница 475: ......
Страница 476: ...pb611ld 8 2 Menu Maps ...
Страница 477: ......
Страница 478: ...84 Menu Maps ...
Страница 480: ......
Страница 487: ......
Страница 488: ...8 14 MenuMaps ...
Страница 489: ...I r RETURN pg657e Menu Maps 8 15 ...
Страница 565: ... Ittble 9 2 Softkey Locations Softkey Front Panel Access Key B 76 Key Definitions ...
Страница 566: ... Ihble 9 2 Softkey Locations continued Key Definitions 8 77 ...
Страница 567: ...9 79 Key Definitions ...
Страница 568: ...Key Definitions 8 78 ...
Страница 569: ... Ihble 9 2 Softkey Locations continued Softkey A i _ 8 80 Key Definitions ...
Страница 570: ...able 9 2 Softkey Locations continued Softkey Front Panel Access Key Key Definitions 9 81 ...
Страница 571: ...Ylhble 9 2 Softkey Locations continued Front Panel Access Key iii3 SJ G J ZiJ GiJ Ical m 9 82 Key Definitions ...
Страница 572: ...lhble 9 2 Softkey Lacations continued Softkey Front Panel Access Key Key Definitions 9 83 ...
Страница 573: ... I ble 9 2 Softkey Locations continued Softkey Front Panel Access K e y 84 I ey Definitions ...
Страница 574: ... lhble 9 2 Softkey Locations continued Softkey Front Panel Access Key Key Definitions g 86 ...
Страница 575: ... lhble 9 2 Softkey Locations continued Softkey FFont Panel Access Key 9 86 Kay Definitions ...
Страница 576: ... ble 9 2 Softkey Locations continued Softkey Front Panel Access Key Key Definitions 9 87 ...
Страница 577: ... lhble 9 2 Softkey Locations continued Softkey Front Fanel Access Key B 88 Key Definitions ...
Страница 578: ...l hble 9 2 Softkey Locations continued Softkey Key Definitiins 8 W ...
Страница 579: ... lhble 9 2 Softkey Locations continued Softkey Front Rmel Access Key WI Key Definitions ...
Страница 580: ... Ihble 9 2 Softkey Locations continued Softkey Front Panel Access Key Key Definitions Ml ...
Страница 581: ... able 9 2 Softkey Locations continued Key Definitions ...
Страница 582: ...able 9 2 Softkey Locations continued Softkey Front Panel Access Key Key Definitions 943 ...
Страница 583: ...7hble 9 2 Softkey Locations continued I Softkey Front Panel Access Key 944 Key Definitions ...
Страница 584: ... Ihble 9 2 Softkey Locations continued Softkey Key Definitions 9 96 ...
Страница 671: ......
Страница 672: ......
Страница 673: ......