High uniformity microstrip to modified-square-ax interconnect

Details High uniformity microstrip to modified-square-ax interconnect High uniformity microstrip to modified-square-ax interconnect

1998-07-31

2000-08-08

Gensler, Paul

Wave transmission lines and networks

Coupling networks

With impedance matching

333260, H01P 508

Patent

active

061007749

ABSTRACT:
A very low reflection transition with tightly controlled variability between a rectangular coaxial transmission line and a microstrip transmission line. The microstrip ground plane is extended under the transition region to form the transition ground plane. The upper portion of the dielectric of the rectangular coaxial transmission line is removed at the transition region, together with the upper portion of the center conductor. The spacing between the transition center conductor and the ground plane is reduced in relation to the spacing between the rectangular coaxial line center conductor and outer conductive shield. A tuning cavity is formed in the transition ground plane beneath the transition center conductor.

REFERENCES:
patent: 4611186 (1986-09-01), Ziegner
patent: 4724409 (1988-02-01), Lehman
patent: 5394119 (1995-02-01), Pleva et al.
patent: 5508666 (1996-04-01), Nguyen
Microwaves, Apr. 1968, pp. 52-56, "Why Not Use Rectangular Coax?", W. S. Metcalf.

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