Radar of FM-CW system

Details Radar of FM-CW system Radar of FM-CW system

1998-11-13

2000-07-11

Gregory, Bernarr E.

Communications: directive radio wave systems and devices (e.g.,

Determining distance

With frequency modulation

342159, 342175, 342195, G01S 1332

Patent

active

060879807

ABSTRACT:
In a radar of FM-CW system having a transmitting and a receiving unit 20 and 28 both connected to a transmitting/receiving antenna 26 via a circulator 24, a high frequency switch 22 for transmission, is inserted and turns on and off the path between the transmitting unit 20 and the circulator 24, and in the receiving operation of the receiving unit 28 the high frequency switch 22 for transmission is controlled according to a switch control signal 320a provided from a signal processing unit 30 such as to be held "off" to hold the transmission output of the transmitting unit 20 "off" for a predetermined time, thus reducing sneak noise component between the transmission and reception. Thus it makes possible to reduce sneak noise between the transmission and reception, and readily realize cost reduction without need of separate antennas for the transmission and reception.

REFERENCES:
patent: 3374478 (1968-03-01), Blau
Japanese Office Action issued Apr. 27, 1999 in a related application. English-language translation of relevant portions of Apr. 27, 1999 Japanese Office Action.

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