Multi-frequency wireless transmitter

Details Multi-frequency wireless transmitter Multi-frequency wireless transmitter

2005-11-16

2009-12-22

Trinh, Sonny (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S103000, C455S041200

Reexamination Certificate

active

07636579

ABSTRACT:
A multi-frequency wireless transmitter is provided for use in automated security systems. The multi-frequency wireless transmitter transmits a message over a plurality of frequencies, thus diminishing the effects of noise interference. The transmitter includes a frequency generator capable of selectably generating a plurality of frequencies lying within the 260 to 470 MHz frequency band. An RF power amplifier having multiple power output values selectable to match with the selected generated frequency regulates the transmit power.

REFERENCES:
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patent: 5553860 (1996-09-01), Zelikovich
patent: 6002925 (1999-12-01), Vu et al.
patent: 6560445 (2003-05-01), Fette et al.
patent: 6850765 (2005-02-01), Wasko
patent: 7176784 (2007-02-01), Gilbert et al.
patent: 2006/0109078 (2006-05-01), Keller, Jr. et al.
patent: 2006/0109079 (2006-05-01), Mack

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