Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Patent
1999-05-05
2000-12-12
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
327408, 455323, 455325, 455319, 455333, H03B 1900
Patent
active
061604259
ABSTRACT:
A frequency converter has both an up-conversion and a down-conversion circuit in a compact circuit design. The converter is operated as an upconverter by activating a first control FET, and is operated as a downconverter by activating a second control FET. The overall converter circuit includes a first inductor connected, through a first matching circuit, to an input port; a first control FET connected through a first capacitor to a first junction point of the first matching circuit and the first inductor, and to a control voltage terminal; a mixing FET connected through a second matching circuit to a local oscillator signal port, and to the first junction point; a second inductor connected, through a third matching circuit, to the mixing FET; a second control FET connected through a second capacitor to a second junction point of the third matching circuit and the second inductor, and to the control voltage terminal through an inverter circuit; and an output port connected through a fourth matching circuit to the second junction point.
REFERENCES:
patent: 4592095 (1986-05-01), Ohnishi et al.
patent: 5428837 (1995-06-01), Bayruns et al.
patent: 5448197 (1995-09-01), Sagawa et al.
patent: 5606738 (1997-02-01), Onodera et al.
Madihian et al.; "A Monolithic AlGaAs/InGaAs Upconverter IC for K-Band Wireless Networks"; IEEE Transactions on Microwave Theory and Techniques; vol. 43, No. 12; Dec. 1995; pp. 2773-2778.
Takimoto et al.; "Research Activities on Millimeter Wave Indoor Communication Systems in Japan"; IEEE MTT-S Digest; 1993; pp. 673-676.
Laurent Desclos
Madihian Mohammad
NEC Corporation
Nguyen Long
Wells Kenneth B.
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