Invention Grant
US09413583B2 Calibrating RF path delay and IQ phase imbalance for polar transmit system
有权
校准极地传输系统的RF路径延迟和IQ相位不平衡
- Patent Title: Calibrating RF path delay and IQ phase imbalance for polar transmit system
- Patent Title (中): 校准极地传输系统的RF路径延迟和IQ相位不平衡
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Application No.: US14575733Application Date: 2014-12-18
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Publication No.: US09413583B2Publication Date: 2016-08-09
- Inventor: Alexander Belitzer , Bernhard Sogl
- Applicant: Intel IP Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel IP Corporation
- Current Assignee: Intel IP Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04B17/00
- IPC: H04B17/00 ; H04L1/24 ; H04L27/36 ; H04B17/10 ; H04B1/04
Abstract:
A method of calibrating parameters for a polar transmitter (Polar TX) system includes receiving phase information derived from transmission information in a Polar TX for producing a radio frequency (RF) broadcast signal. An Inphase local oscillator (LO_I) signal and a quadrature phase local oscillator (LO_Q) signal are derived from a combination of a first signal and the phase information using a digital phase lock loop. A feedback receiver (FBR) receives the RF broadcast signal provided by the Polar TX. The LO_I signal and the LO_Q signal are mixed with the RF broadcast signal to obtain mixer output signals. RF path delay and IQ phase imbalance are concurrently determined as a function of the first signal and of the mixer output signals.
Public/Granted literature
- US20160182162A1 CALIBRATING RF PATH DELAY AND IQ PHASE IMBALANCE FOR POLAR TRANSMIT SYSTEM Public/Granted day:2016-06-23
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