H - Electricity – 03 – D
Patent
H - Electricity
03
D
328/70
H03D 7/02 (2006.01) H03B 19/14 (2006.01)
Patent
CA 1118849
Abstract of the Disclosure A frequency divider is known which uses varactor diodes in a circuit which resonates at fo/N where N is an even integer. Because of circuit losses within the varactor diodes, amplifiers are generally required to recover the input signal level. For systems that require cascaded frequency dividers at least one amplifier is required for each frequency divider. The present invention overcomes these problems by providing a microwave frequency divider to perform parametric frequency division and amplification simultaneously at microwave frequencies. A signal fo is applied to an input transmission line which forms, with the inherent frequency dependent non-linear gate-to-source capacitance of at least one MESFET, a circuit resonant at fo/N, wherein N is an even integer such as 2. The source-drain path of the MESFET is coupled via an output transmission line to a balun transformer having an output to provide amplified signals at fo/N. The transmission lines may be microstrip, stripline or other suitable type of transmission line.
334577
Her Majesty The Queen In Right Of Canada As Represented By The M
Smart & Biggar
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