Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1990-09-04
1992-06-23
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455328, 455330, 333 26, H04B 126, H01P 510
Patent
active
051251116
ABSTRACT:
A passive uniplanar double-balanced RF mixing apparatus, comprising a planar support substrate with first and second conductive layers disposed on first and second sides, and first and second linear slotlines having open terminations on a first end thereof formed in the first conductive layer. First and second coplanar waveguides are also formed in the first conductive layer with each having one end electrically coupled to first and of said first and second slotlines, respectively. A first balun comprises the first coplanar waveguide connection to the first slotline, and a second balun comprises the second coplanar waveguide connection the second slotline. An isolation gap formed in the first conductive layer adjacent to and between the first and second slotlines provided electrical isolation between the first and second baluns and waveguides for RF-toLO isolation. A transfer element, in the form of a third coplanar waveguide or a conductive via, is electrically connected to one of the baluns adjacent to, but removed a predetermined distance from, the associated slotline for transferring intermediate oscillator frequency signals. A folded diode ring is connected between the slotlines and to the first and second baluns.
REFERENCES:
patent: 4553266 (1985-11-01), Bates et al.
patent: 4739519 (1988-04-01), Findley
patent: 4755775 (1988-07-01), Marczewski et al.
Broadband Double Balanced Mixer/Modulators Part I R. B. Mouw and S. M. Fukuchi, The Microwave Journal, vol. 12, No. 3, Mar. 1969, pp. 131-134.
Decade-Band Mixer Covers 3.5 to 35 GHz M. A. Smith, K. J. Anderson, and A. M. Pavio, The Microwave Journal, vol. 29, No. 2, Feb. 1986, pp. 163-171.
Broadband Double Balanced Mixer/Modulators, R. B. Mouw and S. M. Fukuchi, Aertech, The Microwave Journal, Mar. 1969, pp. 131-134.
Eisenzopf Reinhard J.
Hamann H. Fredrick
Montanye George A.
Ogrod Gregory D.
Pham Chi H.
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