Antenna switching circuit

United States of America Patent

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Jul 11, 2006
Grant Date
Feb 17, 2005
app pub date
Aug 11, 2004
filing date
Aug 15, 2003

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Expired

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Abstract

This invention relates to a switching circuit for use at the antenna of a multi-band cellular handset to select between the TX and RX modes of the bands. A number of high isolation switching circuits for selectively connecting a common antenna port to a TX port 2 or an RX port 3 of a multi-band cellular handset are described.

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Patent Owner(s)

TDK CORPORATION

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H01P:WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF ....

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kearns, Brian	Dublin 22, IE	19	255

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Antenna switching circuit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10916140

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PATENT NO	7075386
APP PUB NO	20050035824A1
SERIAL NO	10916140
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
July 11, 2006	US,7075386,B2 US7075386B2	GRANTED PATENT AS SECOND PUBLICATION
February 17, 2005	US,20050035824,A1 US20050035824A1	FIRST PUBLISHED PATENT APPLICATION

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10916140

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