Invention Grant
- Patent Title: RF switchable balun
- Patent Title (中): RF可切换平衡 - 不平衡转换器
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Application No.: US12903387Application Date: 2010-10-13
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Publication No.: US08368481B2Publication Date: 2013-02-05
- Inventor: Yalin Jin , Vikram Krishnamurthy , John Michael Hooper
- Applicant: Yalin Jin , Vikram Krishnamurthy , John Michael Hooper
- Applicant Address: US CA Alisa Viejo
- Assignee: Microsemi Corporation
- Current Assignee: Microsemi Corporation
- Current Assignee Address: US CA Alisa Viejo
- Agent Simon Kahn
- Main IPC: H03H7/42
- IPC: H03H7/42 ; H01P1/10

Abstract:
A handheld communication device having an RF front end module has a switchable balun comprising a primary winding having a first two port winding and a second two port winding where a low noise amplifier is operatively coupled to the first and second two port windings and a power amplifier is operatively coupled to the first and second two port windings. A secondary winding is operatively coupled to an antenna, and a transceiver is operatively coupled to the low noise amplifier and the power amplifier. When the switchable balun is in a receive state, the antenna is operatively coupled to the transceiver through the low noise amplifier, and when the switchable balun is in a transmit state, the antenna is operatively coupled to the transceiver through the power amplifier. The ratio of the primary winding to the secondary winding is greater than a one-to-one ratio.
Public/Granted literature
- US20110128088A1 RF SWITCHABLE BALUN Public/Granted day:2011-06-02
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