Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2006-09-18
2008-12-02
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S262000, C327S430000
Reexamination Certificate
active
07459988
ABSTRACT:
The present invention is a wide dynamic range antenna switch that, when disabled, has a stable input impedance over a wide power range. The wide dynamic range antenna switch includes multiple transistors, which are coupled in series, to provide a main signal path between an antenna connection and a radio connection. Direct current (DC) bias signals are provided to each of the transistors to ensure than when the antenna switch is disabled, the input impedance is stable. A control input, which may operate with low voltage control signals, enables or disables the antenna switch. The antenna switch may be coupled with other antenna switches in a communications system with multiple transceivers sharing a common antenna, and with a wide range of transmitter output power levels. Different embodiments of the present invention provide different DC bias circuit architectures.
REFERENCES:
patent: 6218890 (2001-04-01), Yamaguchi et al.
patent: 6730953 (2004-05-01), Brindle et al.
patent: 6803680 (2004-10-01), Brindle et al.
patent: 6882210 (2005-04-01), Asano et al.
patent: 6891909 (2005-05-01), Hurley et al.
patent: 6900711 (2005-05-01), Vice
patent: 6903656 (2005-06-01), Lee
patent: 7106121 (2006-09-01), Hidaka et al.
patent: 7199635 (2007-04-01), Nakatsuka et al.
Lee Benny
RF Micro Devices, Inc.
Withrow & Terranova, P.L.L.C.
Wong Alan
LandOfFree
High linearity wide dynamic range radio frequency antenna... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High linearity wide dynamic range radio frequency antenna..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High linearity wide dynamic range radio frequency antenna... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4024144