Transmitter/receiver configuration for higher frequencies

Details Transmitter/receiver configuration for higher frequencies Transmitter/receiver configuration for higher frequencies

1994-04-13

1996-10-15

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455 78, 455 85, H04B 140

Patent

active

055663605

ABSTRACT:
A integratable transmitter/receiver configuration for higher frequencies includes a reception path mixer multiplying a reception signal and a carrier frequency signal with one another. A controlled first intermediate frequency oscillator can be turned off by a switch control signal and has a frequency range being reversible by a first range control signal. A demodulator is connected downstream of the reception path mixer and receives the output signal of the first intermediate frequency oscillator both directly and phase-displaced by 90.degree.. A phase detector device is connected downstream of and controls the first intermediate frequency oscillator, and has a frequency range being reversible by a second range control signal. A controlled second intermediate frequency oscillator is connected parallel to the first intermediate frequency oscillator and can be turned on by the switch control signal. A transmission path mixer has one input being connected to the outputs of the first and second intermediate frequency oscillators and has another input receiving the carrier frequency signal. A modulator is connected downstream of the transmission path mixer, receives an input signal, and supplies a transmission signal.

REFERENCES:
patent: 4027242 (1977-05-01), Yamanaka
patent: 4246539 (1981-01-01), Haruki et al.
patent: 4475245 (1984-10-01), Iimura et al.
patent: 5239689 (1993-08-01), Fukuda
patent: 5319799 (1994-06-01), Morita
patent: 5390363 (1995-02-01), Mirtich et al.
Patent Abstract of Japan Publication No. JP 56089136, (Takeo et al.), Jul. 20, 1981.

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