Invention Grant
US09292716B2 Method and apparatus for detecting an output power of a radio frequency transmitter using a multiplier circuit
有权
用于使用乘法器电路检测射频发射机的输出功率的方法和装置
- Patent Title: Method and apparatus for detecting an output power of a radio frequency transmitter using a multiplier circuit
- Patent Title (中): 用于使用乘法器电路检测射频发射机的输出功率的方法和装置
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Application No.: US14669418Application Date: 2015-03-26
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Publication No.: US09292716B2Publication Date: 2016-03-22
- Inventor: Renaldi Winoto , David M. Signoff
- Applicant: Marvell World Trade Ltd.
- Applicant Address: BB St. Michael
- Assignee: Marvell World Trade Ltd.
- Current Assignee: Marvell World Trade Ltd.
- Current Assignee Address: BB St. Michael
- Main IPC: G06G7/163
- IPC: G06G7/163 ; G01R17/16 ; H03D7/14 ; G06G7/16 ; G01R21/00

Abstract:
A power detection circuit configured to detect an output power of a radio frequency transmitter. The power detection circuit includes a multiplier circuit configured to multiply a first differential input signal and a second differential input signal. The first differential input signal corresponds to a radio frequency signal to be amplified by the radio frequency transmitter. The second differential signal corresponds to an output signal as amplified by an amplifier of the radio frequency transmitter. A bias circuit is configured to generate a bias signal. A differential amplifier is configured to generate, based on the bias signal and the first differential signal and the second differential signal as multiplied by the multiplier circuit, an indication of the output power of the amplifier of the radio frequency transmitter.
Public/Granted literature
- US20150199543A1 METHOD AND APPARATUS FOR DETECTING AN OUTPUT POWER OF A RADIO FREQUENCY TRANSMITTER Public/Granted day:2015-07-16
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