发明名称 PHASE LOCKED LOOP CIRCUIT OF DUAL BAND WIRELESS TERMINAL
摘要 PURPOSE: A phase locked loop circuit of a dual band wireless terminal is provided to generate different resonance frequencies by the use of one LC resonance circuit part in the dual band wireless terminal. CONSTITUTION: In a phase locked loop circuit, a phase control part compares an inputted signal with a frequency and a phase of a predetermined reference signal, and outputs a control signal for correcting an error. An LC resonance circuit part(400) is configured by a single circuit, and has a diode element for a switch which is shorted or opened according to an inputted frequency select signal. The LC resonance circuit part(400) generates different resonance frequencies according to an open or short state of the diode element and adjusts the resonance frequencies according to the control signal of the phase control part. A signal amplification part amplifies a signal outputted from the LC resonance circuit part.
申请公布号 KR20000020592(A) 申请公布日期 2000.04.15
申请号 KR19980039262 申请日期 1998.09.22
申请人 SAMSUNG ELECTRONICS CO., LTD. 发明人 JEONG, CHE SEONG
分类号 H03L7/00;(IPC1-7):H03L7/00 主分类号 H03L7/00
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