Boonton Power Sensor - Manual (Page 10)

2
Power Sensor Characteristics
The power sensor has three primary functions. First the sensor converts the incident
RF or microwave power to an equivalent voltage that can be processed by the power
meter. The sensor must also present to the incident power an impedance which is
closely matched to the transmission system. Finally, the sensor must introduce the
smallest drift and noise possible so as not to disturb the measurement.
Table 2-1 lists the characteristics of the latest line of Continuous Wave (CW) sensors
offered by Boonton. The latest Peak Power sensor characteristics are outlined in Table
2-2. This data should be referenced for all new system requirements.
Table 2-1. Diode and Thermal CW Sensor Characteristics
Model
Frequency
Range
Dynamic
Range (1)
Overload
Rating
Maximum SWR Drift and Noise
@ 0 dBm Lowest Range
Impedance Peak Power Drift (typ.) Noise
RF Connector CW Power Frequency SWR 1 Hour RMS 2 σ
(dBm) (GHz) (typical)
WIDE DYNAMIC RANGE DUAL DIODE SENSORS
51075 500 kHz -70 to +20 1 W for 1µs to 2 1.15 100 pW 30 pW 60 pW
50 Ω to 18 GHz (2) 300 mW to 6 1.20 (6)
N(M) to 18 1.40
51077 500 kHz -60 to +30 10 W for 1µs to 4 1.15 2 nW 300 pW 600 pW
50
Ω to 18 GHz (3) 3 W to 8 1.20 (7)
GPC-N(M) to 12 1.25
to 18 1.35
51079 500 kHz -50 to +40 100 W for 1µs to 8 1.20 20 nW 3 nW 6 nW
50
Ω
to 18 GHz (4) 25 W to 12 1.25 (7)
GPC-N(M) to 18 1.35
51071 10 MHz -70 to +20 1 W for 1µs to 2 1.15 100 pW 30 pW 60 pW
50 Ω to 26.5 GHz (2) 300 mW to 4 1.20 (7)
K(M) to 18 1.45
to 26.5 1.50
51072 30 MHz -70 to +20 1 W for 1µs to 4 1.25 100 pW 30 pW 60 pW
50 Ω to 40 GHz (2) 300 mW to 38 1.65 (7)
K(M) to 40 2.00
Power Sensor Manual 5