Invention Grant
- Patent Title: Adaptation of zero intermediate frequency (ZIF) transmitter to correct local oscillator (LO) leakage
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Application No.: US16221391Application Date: 2018-12-14
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Publication No.: US10382087B1Publication Date: 2019-08-13
- Inventor: Joel Dror , Eran Nussbaum , Shai Erez
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Ebby Abraham; Charles A. Brill; Frank D. Cimino
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H04B1/48 ; H04B1/525

Abstract:
An integrated circuit. The integrated circuit comprises an analog transmit chain, an analog receive chain, a processor coupled to the analog transmit and receive chains, and a non-transitory storage coupled to the processor and storing executable code. When executed by the processor, the executable code causes the processor to cause a portion of a radio frequency (RF) signal to be transmitted by the analog transmit chain, to determine a first direct current (DC) voltage of a baseband signal provided by the analog receive chain, to cause a DC voltage offset to be input into the analog transmit chain, to determine a second DC voltage of another baseband signal provided by the analog receive chain, to determine a DC voltage offset compensation based on the first and second DC voltages and the DC voltage offset, and to cause the DC voltage offset compensation to be used to transmit signals.
Information query