Antenna switching circuits for radio telephones

Details Antenna switching circuits for radio telephones Antenna switching circuits for radio telephones

1996-08-07

1998-06-16

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 84, 333101, 370280, H04B 144

Patent

active

057686912

ABSTRACT:
Disclosed are various embodiments of circuitry for coupling first and second transceivers of a dual band radio telephone to integral and external antennas. The circuitry uses impedance matching lengths of transmission lines and switches arranged to provide a minimum insertion loss. Also disclosed is an embodiment for use with a single band radio telephone, such as a digital TDMA radio telephone that either transmits or receives at any given time. Also disclosed is an antenna switching arrangement for a dual band phone that eliminates a requirement for duplexers.

REFERENCES:
patent: 4955039 (1990-09-01), Rother et al.
patent: 5079520 (1992-01-01), Rapeli
patent: 5291474 (1994-03-01), Ikonen et al.
patent: 5301367 (1994-04-01), Heinonen
patent: 5325075 (1994-06-01), Rapeli
patent: 5386203 (1995-01-01), Ishihara
patent: 5390168 (1995-02-01), Vimpari
patent: 5471652 (1995-11-01), Hulkko

Affiliated with

Also associated with

Rating

Antenna switching circuits for radio telephones does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna switching circuits for radio telephones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna switching circuits for radio telephones will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1740293