Balun coupled microwave frequency converter

Details Balun coupled microwave frequency converter Balun coupled microwave frequency converter

1980-12-15

1982-05-18

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

333 26, H04B 126, H03H 742

Patent

active

043308686

ABSTRACT:
A microwave frequency converter is provided by a single mixer of the diode-quad bridge type which circulates generated image frequency within the bridge. The bridge is connected between balun coupled RF microstrip conductors and unbalanced LO microstrip conductors. There is zero connection length between the diode pairs to reduce conversion loss by preventing a phase shift between the image frequencies. Mutual isolation is provided between the RF, LO and IF signals over a broad frequency range. In an alternate utilization, the converter accepts transposed RF and LO signals, for broader bandwidth operation. The circuit may also be implemented as an up converter.

REFERENCES:
patent: 2834876 (1958-05-01), Pritchard et al.
patent: 3652941 (1972-03-01), Neuf
patent: 3678433 (1972-07-01), Hallford
patent: 3681697 (1972-08-01), Moroney
patent: 3772599 (1973-11-01), Ernst et al.
patent: 3831097 (1974-08-01), Neuf
patent: 4245356 (1981-01-01), Hallford
Ben R. Hallford, "Trace Phase States to Check Mixer Designs", Microwaves, Jun. 1980, pp. 52-60.
L. E. Dickens and D. W. Maki, "A New `Phase-Typed` Image Enhanced Mixer", 1975, IEEE MTT Symposium, pp. 149-151.
Julius Lange, "Interdigitated Strip-Line Quadrature Hybrid", 1969, International Microwave Symposium, Dallas, TX, May 5-7, IEEE Cat. No. 69C 6, pp. 10-13.

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