Apparatus and method for frequency conversion

Details Apparatus and method for frequency conversion Apparatus and method for frequency conversion

2007-04-17

2007-04-17

Nguyen, Simon (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S020000, C455S319000, C455S323000

Reexamination Certificate

active

10897156

ABSTRACT:
An apparatus for frequency up conversion and down conversion using frequency multiplier circuits. The frequency multiplier circuits receive a lower frequency signal and are operated in a forward direction to provide a higher frequency output. The same frequency multiplier circuits are operated in a reverse direction by receiving a higher frequency signal and producing a lower frequency output. The frequency multiplier circuits preferably use heterojunction barrier varactor diodes to eliminate the need for DC bias or idler circuitry.

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Gresham, I., et al., “A Compact Manufacturable 76-77-Ghz Radar Module for Commercial ACC Applications,”IEEE Transactions on Microwave Theory and Techniques, vol. 49, No. 1, pp. 44-58 (Jan. 2001).
Saglam, M., et al., “450 Ghz mm-Wave Signal From a Frequency Tripler With Heterostructure Barrier Varactors On Gold Substrate,”Electronics Letters, vol. 38, No. 13, pp. 657-658 (Jul. 20, 2002).
Shaalan, M., et al., “First Design of a 430 Ghz Quasioptical HBV Tripler,”Institut für Hochfrequenztechnik, pp. 47-50.

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