Title

Integration Of Three-Dimensional High-Q Filters With Aperture Antennas And Bandwidth Enhancement Utilising Surface Waves

Abstract

Seamless integration of three-dimensional cavity filters with a new antenna is presented. The antenna consists of an open-ended waveguide aperture mounted on a ground plane.The energy coupling between the last cavity resonator and free space, which is related tothe external quality (Q) factor of the integrated filter/antenna system, can be significantly enhanced. The low external Q factor (Qext), which is necessary for the design of wide-band filter/antenna systems, is due to the excitation and radiation of surface waves. Athree-pole cavity filter integrated with the proposed antenna is demonstrated at X band. The centre frequency and fractional bandwidth of the filter/antenna system are 10.2 GHz and 34.0%, respectively, in simulations. A prototype filter/antenna system is fabricated and measured. Good agreement between the simulated and measured results is observed. © The Institution of Engineering and Technology 2013.

Publication Date

7-24-2013

Publication Title

IET Microwaves, Antennas and Propagation

Volume

7

Issue

7

Number of Pages

468-475

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1049/iet-map.2012.0432

Socpus ID

84880392900 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84880392900

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