Portable radio signal detecting system

Details Portable radio signal detecting system Portable radio signal detecting system

1994-06-22

1996-07-09

Sotomayor, John B.

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

Determining distance

Combined with determining direction

342175, 342419, 342443, G01S 1342

Patent

active

055348726

ABSTRACT:
In a radio signal detecting system, an antenna is rotatably mounted on a wrist watch type case, and this antenna is manually rotated to receive a radio signal reflected from a target to be distance-measured every time the antenna is rotated by a preselected rotation angle. The reflected radio signal is digitally converted into field strength data, or distance data. These field strength data, or distance data are sequentially stored into a memory circuit in correspondence with the rotation angle of the antenna. Since the data stored into the memory circuit at every rotation angle for the antenna are displayed on a liquid crystal display unit, the radio signal detecting system can be made compact and operated under low power consumption.

REFERENCES:
patent: 3721950 (1973-03-01), Jorgensen et al.
patent: 4673936 (1987-06-01), Kotoh
patent: 4949072 (1990-08-01), Comerford et al.
patent: 4999606 (1991-03-01), Comerford et al.
patent: 5414427 (1995-05-01), Gunnarrsson

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