Method and system for FM transmit and FM receive using a...

Details Method and system for FM transmit and FM receive using a... Method and system for FM transmit and FM receive using a...

Filed on

2007-05-17

Date issued

2010-10-26

Examiner

Phan, Tho G (Department: 2821)

Patent Class

Communications: radio wave antennas

SubClass

Antennas

SubSubClass

With coupling network or impedance in the leadin

Type

Reexamination Certificate

Status

active

Patent number

07821472

Description

ABSTRACT:
Aspects of a method and system for FM transmit and FM receive using a transformer as a duplexer may include communicating radio frequency signals via an antenna coupled to primary windings of a radio frequency transformer, wherein secondary windings of the radio frequency transformer may be utilized for receiving and/or transmitting the communicated radio frequency signals. The receiving and transmitting may be operated in time division duplex mode or simultaneously. A number of windings between a pair of connector terminals of the secondary windings used for transmitting of the radio frequency signals may be less than or equal to a number of windings of the primary windings. A number of windings between a pair of connector terminals of the secondary windings used for receiving of the radio frequency signals may be greater than or equal to a number of windings of the primary windings.

REFERENCES:
patent: 2102401 (1937-12-01), Yolles
patent: 2110159 (1938-03-01), Landon et al.
patent: 5029294 (1991-07-01), Kim
patent: 6505072 (2003-01-01), Linder et al.
patent: 2006/0270377 (2006-11-01), Bhatti et al.
patent: 2008/0231536 (2008-09-01), Rofougaran et al.
patent: 04280137 (1992-10-01), None

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