Invention Grant
- Patent Title: Amplifier with bypass switch
- Patent Title (中): 带旁路开关的放大器
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Application No.: US12473351Application Date: 2009-05-28
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Publication No.: US07898325B2Publication Date: 2011-03-01
- Inventor: Zulfa Bin Hasan Abrar
- Applicant: Zulfa Bin Hasan Abrar
- Applicant Address: SG Singapore
- Assignee: Avago Technologies Wireless IP (Singapore) Pte. Ltd.
- Current Assignee: Avago Technologies Wireless IP (Singapore) Pte. Ltd.
- Current Assignee Address: SG Singapore
- Main IPC: H03F1/14
- IPC: H03F1/14

Abstract:
An amplifying circuit of a receiver for receiving a signal in a wireless network includes an amplifier and a switch. The amplifier includes an amplifying transistor having a gate connected to an input for receiving the signal and a source/drain connected to a voltage source through an inductance. The amplifier also includes a bypass transistor having a gate connected to a control signal for activating the bypass transistor in a bypass mode and a source/drain connected in parallel with the inductance. The switch is connected in parallel with the amplifier between the input and an output, and activates in the bypass mode, enabling the received signal to bypass the amplifier. In the bypass mode, a voltage at the source/drain of the amplifying transistor is lower when the bypass transistor is activated than when not activated, the lower source/drain RF voltage reducing unwanted harmonics from the amplifier.
Public/Granted literature
- US20100301942A1 AMPLIFIER WITH BYPASS SWITCH Public/Granted day:2010-12-02
Information query
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