Invention Grant
- Patent Title: Apparatus for controlling impedance
- Patent Title (中): 用于控制阻抗的装置
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Application No.: US11341382Application Date: 2006-01-30
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Publication No.: US07899409B2Publication Date: 2011-03-01
- Inventor: Carol Barrett Huang , Edwin X. Li
- Applicant: Carol Barrett Huang , Edwin X. Li
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04B1/44
- IPC: H04B1/44

Abstract:
A transceiver is described that includes a power amplifier (PA), a low noise amplifier (LNA), and an impedance matching circuit having a first and second differential output node. The first and second differential output nodes are coupled to outputs of the PA and to inputs of the LNA. The impedance matching circuit provides a load impedance to the outputs of the PA. The transceiver further includes a first impedance device having an output impedance coupled between the first and second differential output nodes. In this way, the combination of the output impedance and the load impedance matches with an impedance at the inputs of the LNA.
Public/Granted literature
- US20070207746A1 Apparatus for controlling impedance Public/Granted day:2007-09-06
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