Radio communication apparatus

Details Radio communication apparatus Radio communication apparatus

1997-03-19

1999-06-29

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

4552771, 455 65, H04B 1702

Patent

active

059181648

ABSTRACT:
A mean value of a received signal level is calculated by a mean value computing unit, a product of multiplying this received signal mean level by a prescribed ratio is calculated by a threshold computing unit and used as a first threshold value, and when the received signal level drops below this first threshold value, communication is performed by making a switch to an antenna that receives signals at a received signal level that is higher than the first threshold value. Switching of receiving antennas is not made when the received signal mean level calculated by the mean value computing unit falls below a second threshold value. This allows antenna switching to be performed in accordance with changes in the received signal level and prevents unnecessary antenna switching from being made when the level falls below the second threshold value.

REFERENCES:
patent: 4035728 (1977-07-01), Ishikawa et al.
patent: 4742563 (1988-05-01), Fukumura
patent: 4969207 (1990-11-01), Sakamoto et al.
patent: 5535440 (1996-07-01), Clappier
patent: 5548836 (1996-08-01), Taromaru

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