Wideband signal calibration system

Details Wideband signal calibration system Wideband signal calibration system

1977-05-31

1979-02-06

Griffin, Robert L.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325 67, 325398, 325407, 343 177, 331 44, H04B 1700

Patent

active

041386450

ABSTRACT:
A calibration system for a wideband superheterodyne receiver in which a fixed-frequency signal source supplies an IF signal to the mixer for conversion to an RF signal. The RF signal produced in this manner passes through the RF components of the receiver to the input port of the receiver where it is detected by a wideband detector. The video output signal from the detector provides an indication of the RF gain of the receiver required for calibration. The fixed frequency IF signal may be converted to an RF signal for calibration purposes at every frequency that the receiver can accommodate merely by sweeping the local oscillator throughout its frequency range.

REFERENCES:
patent: 4031469 (1977-06-01), Johnson

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