Invention Grant
- Patent Title: Sliding if transceiver architecture
- Patent Title (中): 如果收发器架构滑动
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Application No.: US13691238Application Date: 2012-11-30
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Publication No.: US08995505B2Publication Date: 2015-03-31
- Inventor: Faramarz Sabouri , Alberto Cicalini
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Ramin Mobarhan
- Main IPC: H04B1/38
- IPC: H04B1/38 ; H04B1/40

Abstract:
Techniques for providing a transceiver with a sliding intermediate frequency (IF). In an aspect, a PLL generates a single local oscillator (LO) signal used for both up-conversion by a transmit (TX) signal path and down-conversion by a receive (RX) signal path, wherein the LO frequency is chosen as the TX carrier frequency. As the TX and RX carrier frequencies may generally differ by a variable amount, the RX signal path utilizing the (TX) LO frequency for down-conversion may be characterized as having a “sliding” IF. To accommodate the sliding IF receiver architecture, specific processing functions such as charge sampling, discrete-time analog band-pass filtering, and sub-sampling analog-to-digital conversion (ADC) are described.
Public/Granted literature
- US20140153616A1 SLIDING IF TRANSCEIVER ARCHITECTURE Public/Granted day:2014-06-05
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