Invention Grant
US07773968B2 Interface/synchronization circuits for radio frequency receivers with mixing DAC architectures
失效
具有混合DAC结构的射频接收机的接口/同步电路
- Patent Title: Interface/synchronization circuits for radio frequency receivers with mixing DAC architectures
- Patent Title (中): 具有混合DAC结构的射频接收机的接口/同步电路
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Application No.: US11565487Application Date: 2006-11-30
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Publication No.: US07773968B2Publication Date: 2010-08-10
- Inventor: Adrian Maxim , Charles D. Thompson , Mitchell Reid
- Applicant: Adrian Maxim , Charles D. Thompson , Mitchell Reid
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories, Inc.
- Current Assignee: Silicon Laboratories, Inc.
- Current Assignee Address: US TX Austin
- Agency: Polansky & Associates, P.L.L.C.
- Main IPC: H04B1/10
- IPC: H04B1/10

Abstract:
A receiver (1300) includes a mixing digital-to-analog converter (DAC) (1306), a direct digital frequency synthesizer (DDFS) (132A) and an interface (134D). The mixing DAC (1306) includes a radio frequency (RF) transconductance section (1308) and a switching section (1310). The RE transconductance section (1308) includes an input for receiving an RF signal and an output for providing an RE current signal. The switching section (1310) is coupled to the RF transconductance section (1308) and includes inputs for receiving bits associated with a digital local oscillator (LO) signal and an output that is configured to provide an analog output signal. The DDFS (132A) includes outputs configured to provide the bits associated with the digital LO signal to the inputs of the switching section (1310). The interface (134D) is coupled to the DDFS (132A) and is configured to align the bits provided by the DDFS (132A) with a first clock signal.
Public/Granted literature
- US20080132195A1 INTERFACE/SYNCHRONIZATION CIRCUITS FOR RADIO FREQUENCY RECEIVERS WITH MIXING DAC ARCHITECTURES Public/Granted day:2008-06-05
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