Open loop resonator filter using aperture

Details Open loop resonator filter using aperture Open loop resonator filter using aperture

2006-09-05

2006-09-05

Barnie, Rexford (Department: 2819)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S202000

Reexamination Certificate

active

07102469

ABSTRACT:
An open loop resonator filter employed aperture on the ground plane is disclosed. The open loop resonator filter using apertures on the ground plane formed on the dielectric substrate, the open loop resonator filter including: one or more open loop resonators formed on a upper side of the dielectric substrate and implemented by microstrip lines; and one or more apertures formed on a predetermined area of the ground plane. The present invention can control the coupling coefficient of the open loop resonator without degrading the group delay characteristics by forming the aperture on the ground plane. Therefore, by forming the aperture on the ground plane, it is possible to design a filter having a wide bandwidth characteristic.

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2002 IEEE MTT-S International Microwave Symposium Digest, vol. 1, “Improvement of Microstrip Open Loop Resonator Filter Using Aperture”, 5 pages.
“Aperature-Coupled Microstrip Open-Loop Resonators and Their Applications to the Design of Novel Microstrip Bandpas Filters”, J. Hong, et al., Sep. 1999 IEEE, vol. 47, No. 9, 8 pages.

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