Receiving apparatus and receiving circuit

Details Receiving apparatus and receiving circuit Receiving apparatus and receiving circuit

2005-12-01

2009-06-09

Phu, Sanh D (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S277100, C455S134000, C455S135000, C370S334000, C370S336000

Reexamination Certificate

active

07546104

ABSTRACT:
The invention arranges an auxiliary antenna in the neighborhood of an antenna, and a voltage applied to the auxiliary antenna is changed based on the reception quality of a received signal received by the antenna. Thereby, the reception characteristic of the antenna is changed. Moreover, the optimum antenna is selected among a plurality of arranged antennas based on the reception quality of the received signals received by the plurality of arranged antennas.

REFERENCES:
patent: 5117505 (1992-05-01), Talwar et al.
patent: 6721550 (2004-04-01), Okada et al.
patent: 7313409 (2007-12-01), Iacono et al.
patent: 2005/0018634 (2005-01-01), Mantha et al.
patent: 2000-22613 (2000-01-01), None
Notification Concerning Transmittal of International Preliminary Report on Patentability and Written Opinion, Chapter I of the Patent Cooperation Treaty for PCT/JP2005/022253, dated Jun. 14, 2007. 8 sheets.

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