Invention Grant
US09374121B2 Transceiver with super-heterodyne and zero intermediate frequency (ZIF) topologies
有权
具有超外差和零中频(ZIF)拓扑的收发器
- Patent Title: Transceiver with super-heterodyne and zero intermediate frequency (ZIF) topologies
- Patent Title (中): 具有超外差和零中频(ZIF)拓扑的收发器
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Application No.: US13962945Application Date: 2013-08-08
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Publication No.: US09374121B2Publication Date: 2016-06-21
- Inventor: Haim M. Weissman , Yossef Tsfaty , Mazhareddin Taghivand , Avigdor Brillant , Tao Li , Raviv Lior
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent James Gutierrez
- Main IPC: H04B1/30
- IPC: H04B1/30 ; H04B1/40 ; H04B1/28 ; H04B1/403

Abstract:
Transceivers implemented with a combination of super-heterodyne and zero intermediate frequency (ZIF) topologies are disclosed. In an exemplary design, an apparatus includes a frequency conversion circuit and a local oscillator (LO) generator. The LO generator generates a first LO signal and a second LO signal. The frequency conversion circuit performs frequency conversion (i) between intermediate frequency (IF) and baseband, based on the first LO signal, for an IF signal and (ii) between radio frequency (RF) and baseband, based on the second LO signal, for an RF signal. The frequency conversion circuit may perform frequency downconversion (i) from IF to baseband for a super-heterodyne receiver and (ii) from RF to baseband for a ZIF receiver. Alternatively or additionally, the frequency conversion circuit may perform frequency upconversion (i) from baseband to IF for a super-heterodyne transmitter and (ii) from baseband to RF for a ZIF transmitter.
Public/Granted literature
- US20140065985A1 TRANSCEIVER WITH SUPER-HETERODYNE AND ZERO INTERMEDIATE FREQUENCY (ZIF) TOPOLOGIES Public/Granted day:2014-03-06
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