High-pass filter for microstrip circuit

Details High-pass filter for microstrip circuit High-pass filter for microstrip circuit

1989-10-23

1991-02-19

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333208, 333246, H01P 1203, H01P 308

Patent

active

049947753

ABSTRACT:
A low loss high-pass microwave filter for microstrip circuits comprises a single-ridge waveguide which is attached to a microstrip circuit in a manner to establish a cutoff frequency for the circuit. The single-ridge waveguide has a top wall and sidewalls with a ridge projecting centrally from the top wall into the waveguide. The waveguide is associated with the microstrip circuit such that the sidewalls of the waveguide extend through a dielectric substrate of the circuit parallel to and on opposite sides of a microstrip line of the circuit and are connected electrically and physically to the ground plane, which forms a bottom wall for the waveguide. The ridge of the waveguide has a width which is equal to or narrower than the microstrip line and is aligned with the microstrip line. Within the waveguide, the microstrip line width is made to be substantially the same as the ridge width such that the microstrip line is narrowed within the waveguide if the ridge has a width which is narrower than the microstrip line outside the waveguide. The association of the waveguide and the microstrip circuit ensure that the ridge and the microstrip line are in good electrical and physical contact.

REFERENCES:
patent: 2825876 (1958-03-01), Le Vine et al.
patent: 3969691 (1976-07-01), Saul
patent: 4453142 (1984-06-01), Murphy
patent: 4550296 (1985-10-01), Ehrlinger et al.
patent: 4571593 (1986-02-01), Martinson
patent: 4673897 (1987-06-01), Chua et al.
Izadian, Unified Design Plans and Waveguide Transitions, Microwaves & RF, May 1987, pp. 213-222.
Kompa, About the Frequency-Dependent Characteristics of a Microstrip-Waveguide Transition, Arch. Elektron and Uebertragungstech, vol. 35, No. 2, pp. 69-71, Feb. 1981.

Affiliated with

Also associated with

Rating

High-pass filter for microstrip circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-pass filter for microstrip circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-pass filter for microstrip circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1146561