R.F. Circuit arrangement

Details R.F. Circuit arrangement R.F. Circuit arrangement

1983-08-08

1985-11-12

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455328, 455330, H04B 116, H04B 126

Patent

active

045532664

ABSTRACT:
An R.F. circuit with at least one R.F. transmission line including a strip conductor (15) and a ground plane (13) on an insulating substrate (3) and having two diodes (24, 25) respectively D.C.-connected to two portions (38,39) of the ground plane (13). The two portions are mutually D.C.-isolated by a slot (37) to enable the diodes (24, 25) to be biased. The substrate (3) is mounted in a housing (1, 2) of conductive material, and the two portions (38, 39) of the ground plane (13) are mutually R.F.-coupled via the conductive material. One of the portions (39) is electrically-connected to an adjacent housing member (2) and the other portion (38) is separated therefrom by a thin insulating layer. The slot (37) inhibits coupling of R.F. energy out of the circuit into the slot (37), suitably being very narrow, e.g. 20 .mu.m, so as to form a further transmission line with a very low characteristic impedance and also to have a high attenuation along its length for operation at mm-wavelengths.

REFERENCES:
patent: 3939430 (1976-02-01), Dickens et al.
patent: 4032849 (1977-06-01), Gysel et al.

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