Patent
1976-09-01
1977-06-28
Martin, John C.
321 69W, H04B 126
Patent
active
040328490
ABSTRACT:
A broadband millimeter wave (26.5-40 GHz) mixer/converter utilizing slotl and coplanar strip-line for the construction of the hybrid junction. The RF and local oscillator signals are applied 180.degree. out of phase to a pair of beam-lead diodes. A diplexer consisting of a low-pass filter and a bandpass filter is also provided to separate the IF and LO signals. A first microwave integrated circuit (MIC) card carries the waveguide to slotline transition, the slotline transmission section, the tapered coplanar waveguide section and the LO bandpass filter. A pair of Schottky-barrier diodes are connected across the transmission channels of the coplanar waveguide section to form the hybrid junction. The LO input is applied to a section of suspended strip-line on this first MIC card. A second MIC card carries the IF low-pass filter and couples to the IF output of the mixer.
REFERENCES:
patent: 3584306 (1971-06-01), Spacek
patent: 3678395 (1972-07-01), Hunton et al.
patent: 3854083 (1974-12-01), Hulderman et al.
patent: 3939430 (1976-12-01), Dickens et al.
patent: 4000469 (1976-12-01), McMaster
Gorwara Ashok K.
Gysel Ulrich H.
Fendelman H.
Martin John C.
Ng Jin F.
Rubens G. J.
Sciascia R. S.
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