RF and IF Circuitry of an uplink receiver

Details RF and IF Circuitry of an uplink receiver RF and IF Circuitry of an uplink receiver

1979-04-18

1981-09-01

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455326, H04B 126

Patent

active

042876044

ABSTRACT:
The present invention relates to uplink receiver circuitry which combines a local oscillator signal with an S-Band signal in a high-level mixer, operating in saturation, to produce an intermediate frequency (IF) signal in a high-level mixer. The use of a saturated high-level mixer enables the circuitry to convert received RF signals into undistorted IF signals without an RF limiter and its attendant dynamic range restrictions and distortion.

REFERENCES:
patent: 2911528 (1959-11-01), McRae
patent: 3619786 (1971-11-01), Wilcox
patent: 3622895 (1971-11-01), Starkey et al.
patent: 4163944 (1979-08-01), Chambers et al.
"Microstrip Balanced Mixer for S-Band Receiver", by Chatterjee et al., pp. 15-418, 8/1974.

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