Invention Grant
- Patent Title: Radio front end and applications thereof
- Patent Title (中): 无线电前端及其应用
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Application No.: US10802014Application Date: 2004-03-16
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Publication No.: US08270926B2Publication Date: 2012-09-18
- Inventor: Razieh Roufoogaran , Jesus Alfonso Castaneda
- Applicant: Razieh Roufoogaran , Jesus Alfonso Castaneda
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Garlick & Markison
- Agent Timothy W. Markison; Jessica W. Smith
- Main IPC: H04B1/18
- IPC: H04B1/18

Abstract:
A radio front end includes a transformer and an adjustable load. The transformer includes a first winding and a second winding, wherein the first winding is operably coupled to an antenna and the second winding coupled to at least one of a power amplifier and a low noise amplifier. The adjustable load is operably coupled to the second winding, wherein the adjustable load provides a first impedance based on a first impedance selection signal when the radio front end is in a transmit mode and provides a second impedance based on a second impedance selection signal when the radio front end is in a receive module such that impedance at the first winding is substantially similar in the transmit mode and in the receive mode.
Public/Granted literature
- US20050208917A1 Radio front end and applications thereof Public/Granted day:2005-09-22
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