发明名称 Method and apparatus for reducing oscillator pull in a CMOS wireless transceiver integrated circuit
摘要 A monolithic transceiver integrated circuit that includes a substrate, a transmitter subsystem of one or more subcircuits on the substrate, and a receiver subsystem of one or more, subcircuits on the substrate. Also included is a bias current supply coupled to the receiver and transmitter subsystems to provide bias current. The bias current supply includes a first bias circuit on the substrate coupled to, and to supply bias current to, a first subcircuit of the transmitter subsystem. The first bias circuit includes a first current modulator having a first switch input to indicate that the bias current is to start or stop being supplied to the first subcircuit. The first current modulator is to control the rate of change of supplied bias current in response to the first switch input. The first subcircuit may be a power amplifier. The control of the rate of change reduces oscillator pull in at least one oscillator included in the integrated circuit.
申请公布号 US6665339(B1) 申请公布日期 2003.12.16
申请号 US20010877398 申请日期 2001.06.08
申请人 CISCO SYSTEMS WIRELESS NETWORKING (AUSTRALIA) PTY. LIMITED 发明人 ADAMS ANDREW;WESTE NEIL
分类号 H03F1/02;H03L7/07;(IPC1-7):H03K9/08 主分类号 H03F1/02
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