Invention Grant
- Patent Title: Dynamic high-pass filter cut-off frequency adjustment
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Application No.: US15716430Application Date: 2017-09-26
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Publication No.: US10340967B2Publication Date: 2019-07-02
- Inventor: Xinping Zeng , Mohit Narang , Peter M. Agboh , Vusthla Sunil Reddy
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: H03D1/22
- IPC: H03D1/22 ; H03D3/00 ; H03H7/06 ; H04B1/30 ; H04B5/00

Abstract:
A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.
Public/Granted literature
- US20190097664A1 DYNAMIC HIGH-PASS FILTER CUT-OFF FREQUENCY ADJUSTMENT Public/Granted day:2019-03-28
Information query
IPC分类: