Telecommunications – Transmitter and receiver at separate stations – Optimum frequency selection
Patent
1989-12-14
1992-10-27
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Optimum frequency selection
455 69, 455 75, 455 88, 455113, H04B 1700, H04B 140
Patent
active
051597047
ABSTRACT:
An information transmission arrangement comprising transceiver units (1, 2) located in a propagation medium (10) whose attentuation varies as a function of frequency. At least one unit (1) comprise a meter (67) for measuring the level of the received signal in order to influence the frequency variation control (32) of the control oscillator (28) in the send circuit (26, 28) of the other unit (2). This arrangement profits from a monotonic attenuation gradient of the propagation medium (10) having a zone (Z1) in the 50-60 GHz band to control the send level in a simple and effective manner.
REFERENCES:
patent: 2125977 (1938-09-01), Zworykin
patent: 3160813 (1964-12-01), Biggi et al.
patent: 3617891 (1971-11-01), Covill
patent: 4695842 (1987-09-01), Jehle et al.
Marchand et al., "23 GHz Radio Equipments DTS 10-64 and FTD 23", Commutation and Transmission, No. 4 1986, pp. 29-38.
"Satellite Communications", Gagliardi, Robert M. Lifetime Learning Pub., May 1984, pp. 94-95.
Alexis Roger
Chelouche Marc
Pirolli Claude
Eisenzopf Reinhard J.
Faile Andrew
Telecommunications Radioelectriques et Telephoniques
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