Invention Grant
US09124316B2 Transmit circuit, method for adjusting a bias of a power amplifier and method for adapting the provision of a bias information
有权
发射电路，用于调整功率放大器的偏置的方法以及用于调整偏置信息的提供的方法
- Patent Title: Transmit circuit, method for adjusting a bias of a power amplifier and method for adapting the provision of a bias information
- Patent Title (中): 发射电路，用于调整功率放大器的偏置的方法以及用于调整偏置信息的提供的方法
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Application No.: US14273672Application Date: 2014-05-09
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Publication No.: US09124316B2Publication Date: 2015-09-01
- Inventor: Andreas Langer
- Applicant: Intel Mobile Communications GmbH
- Applicant Address: DE Neubiberg
- Assignee: Intel Mobile Communications GmbH
- Current Assignee: Intel Mobile Communications GmbH
- Current Assignee Address: DE Neubiberg
- Agency: Eschweiler & Associates, LLC
- Main IPC: H01Q11/12
- IPC: H01Q11/12 ; H04B1/04 ; H03F1/32 ; H03F3/24 ; H03F3/19
Abstract:
A transmit circuit includes an envelope tracker configured to determine an envelope of a transmit signal and provide bias information based on the determined envelope of the transmit signal. The transmit circuit further includes a power amplifier configured to generate an RF output signal based on the transmit signal, a bias provider configured to provide a bias for the power amplifier based on the bias information, and an impedance determinator configured to determine a measure of a load impedance of a load coupled to an output of the power amplifier. The envelope tracker is configured to adapt the bias information based on the measure of the load impedance.
Public/Granted literature
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