Transmitter/receiver apparatus with common oscillator that chang

Details Transmitter/receiver apparatus with common oscillator that chang Transmitter/receiver apparatus with common oscillator that chang

1991-10-18

1993-08-24

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455 73, H04B 154

Patent

active

052396894

ABSTRACT:
A transmitter/receiver apparatus wherein a sufficiently great difference is assured between frequencies of intermediate frequency signals of transmitting and receiving circuits to assure an improved disturbance preventing performance. An oscillating circuit for oscillating a signal for selection of a channel is provided commonly for the transmitting and receiving circuits. In the transmitting circuit, power is supplied, also in a receiving operation, to a modulating circuit so that it continues a modulating operation, and an output of the modulating circuit is frequency converted with an oscillation output of the oscillating circuit into a signal of a frequency corresponding to a predetermined channel. In the receiving circuit, a received signal of the predetermined channel is frequency converted with the oscillation output of the oscillating circuit into a signal of an intermediate frequency. The frequency of the oscillation output of the oscillating circuit is varied by a predetermined amount between transmission and reception.

REFERENCES:
patent: 4037158 (1977-07-01), Eastmond
patent: 4238850 (1980-12-01), Vance
patent: 4525835 (1985-06-01), Vance et al.
patent: 4903257 (1990-02-01), Takeda et al.
patent: 5117423 (1992-05-01), Sheperd et al.
patent: 5123008 (1992-06-01), Beesley

Affiliated with

Also associated with

Rating

Transmitter/receiver apparatus with common oscillator that chang does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transmitter/receiver apparatus with common oscillator that chang, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmitter/receiver apparatus with common oscillator that chang will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-836371