Giga-tronics 58542 - Directional Bridges

58542 VXIbus Universal Power Meter
B-8 Publication 21555, Rev. E, September 2002
B.2.4 Directional Bridges
The 80500 CW Directional Bridges are designed specifically for use with Giga-tronics power meters to
measure the Return Loss/SWR of a test device. Each bridge includes an EEPROM which has been
programmed with Identification Data for that bridge.
The Selection Guide in Table B-5 shows primary specifications. Additional specifications are:
Table B-5: Directional Bridge Selection Guide
Precision CW Return Loss Bridges
Model
Freq. Range/
Power Range
Max.
Power
Power Linearity
4
(Frequency >
8
GHz)
Input
Test
Port
Directivity Wgt. VSWR
80501 10MHz to 18GHz
-35 to +20dBm
+27dBm
(0.5W)
-35 to +10dBm ±0.1dB
+10 to +20dBm ±0.1dB
±0.005dB/dB
Type N(f)
50 Ω
Type N(f)
50 Ω
38 dB 0.340 kg <1.17:0.01 - 8GHz
<1.27:8 - 18GHz
80502 10MHz to 18GHz
-35 to +20dBm
+27dBm
(0.5 W)
-35 to +10dBm ±0.1dB
+10 to +20dBm ±0.1dB
±0.005dB/dB
Type N(f)
50 Ω
APC-7(f)
50 Ω
40 dB 0.340 kg <1.13:0.01 - 8GHz
<1.22:8 - 18GHz
80503 10MHz to 26.5GHz
-35 to +20dBm
+27dBm
(0.5 W)
-35 to +10dBm ±0.1dB
+10 to +20dBm ±0.1dB
±0.005dB/dB
SMA(f)
50 Ω
SMA(f)
50 Ω
35 dB 0.340 kg <1.22:0.01 - 18GHz
<1.27:8 - 26.5GHz
80504 10MHz to 40GHz
-35 to +20dBm
+27dBm
(0.5 W)
-35 to +10dBm ±0.1dB
+10 to +20dBm ±0.1dB
±0.005dB/dB
Type K(f)
50 Ω
Type K(f)
50 Ω
30 dB 0.198 kg <1.35:0.01 - 26.5GHz
<1.44:26.5 - 40GHz
Bridge Frequency Response
Return loss measurements using the 8541/8542 power meter can be frequency compensated using the standard Open/Short supplied
with the bridge.
Insertion Loss
6.5 dB, nominal, from input port to test port
Maximum Input Power
+27 dBm (0.5 W)
Directional Bridge Linearity Plus Zero Set & Noise vs. Input Power (50 MHz, 25 °C ±5 °C)
See Table below