Duplexer with impedance inverters

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12166509
APP PUB NO 20230308118A1
SERIAL NO

18327705

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Importance

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Abstract

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A duplexer may be used to isolate a transmitter and a receiver that share a common antenna. By using impedance gradients to provide impedances that cause balance-unbalance transformers (balun) of the duplexer to cut-off access to the common antenna rather than duplicate the antenna impedance, the duplexer is balanced. Such cut-offs may have a lower insertion loss than a duplexer that merely duplicates the antenna impedance to separate the differential signals of the receiver and transmitter from the common mode signal.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCCALIFORNIA USA CALIFORNIA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hur, Joonhoi Sunnyvale, US 84 290
Vazny, Rastislav Sunnyvale, US 62 63

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