发明名称
摘要 A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops selectively connected between a first and second differential input of a voltage oscillator active network. A plurality of diodes, connected in series with the respective plurality of capacitance loops, selectively connect respective capacitance loops between the first and second differential input when forward biased. In a similar fashion, the plurality of diodes selectively disconnect the respective capacitance loops from the first and second differential input when reverse biased. A controller applies a forward biasing voltage to the diode of the selected capacitance loop to connect the capacitance loop to the active network of the voltage controlled oscillator and applies a reverse biasing voltage to the diode of the selected capacitance loop to disconnect the capacitance loop from the active network. The diodes used in the capacitance loops form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.
申请公布号 JP2001523907(A) 申请公布日期 2001.11.27
申请号 JP20000521585 申请日期 1998.11.10
申请人 发明人
分类号 H03B1/00;H03B5/12;(IPC1-7):H03B5/12 主分类号 H03B1/00
代理机构 代理人
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