Patent ID: 6160425
Filing Date: 2000-12-12
Classification: H03D

Abstract:
A frequency converter comprising:a first matching circuit having one end connected to an input port for receiving input signals;a first inductor having one inductor end connected to other end of said first matching circuit, and other inductor end to a first voltage source;a first control element having a first port connected, through a first capacitor, to a first junction of said first inductor and said first matching circuit, a grounded second port, and a third port connected to a control voltage terminal to be activated with a control voltage supplied from either the first voltage source or a second voltage source;a second matching circuit having one end connected to a local oscillator signal port for inputting local oscillator signals;a mixing element, having a first port connected to said first junction, a second port connected to other end of said second matching circuit, and a third port, wherein signals at said first port and said second port are mixed and output to said third port;a third matching circuit having one end connected to said third port of said mixing element;a second inductor having one inductor end connected to other end of said third matching circuit, and other inductor end to the second voltage source;a second control element having a first port connected, through a second capacitor, to a second junction point of said second inductor and said third matching circuit, a grounded second port; and a third port connected, through an inverter circuit, to said control voltage terminal; anda fourth matching circuit having one end connected to said second junction point, and other end to an output port.