Method for using a programmable operating frequency for a...

Details Method for using a programmable operating frequency for a... Method for using a programmable operating frequency for a...

2006-11-28

2006-11-28

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C455S572000

Reexamination Certificate

active

07142441

ABSTRACT:
A method for determining the switching frequency of a DC-to-DC power supply for a portable radio transceiver (300) includes determining a first group of switching frequencies (301) and then determining the switching harmonics based on that group of switching frequencies (305). These switching harmonics are then compared to a group of desired radio channels (311) where it is then determined if the switching frequencies interfere with the group of desired radio channels (313). Based on these results, a second group of switching frequencies is selected if the first set of switching frequencies provides an undesired level of interference (317, 319, 321).

REFERENCES:
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patent: 5420576 (1995-05-01), Matai et al.
patent: 5926013 (1999-07-01), Brandt
patent: 6223025 (2001-04-01), Tsukuda
patent: 6385470 (2002-05-01), Bendixen
patent: 7058373 (2006-06-01), Grigore
ALINCO Parts & Service Dealers web pages printout of DM330MVE/MVT/MVZ information, 4 pages, printed Aug. 16, 2004.

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