Title

Integrated Filter/Antennas With High Efficiency And Increased Bandwidth

Keywords

Bandpass filter; cavity resonator; packaging; patch antenna; slot antenna

Abstract

Two methods of integrating high-Q 3-D filters with antennas are presented to achieve very high efficiency and increased bandwidth. In one approach, a three-pole cavity filter is integrated with a slot antenna, which acts as an equivalent load of the filter. A total filter/antenna efficiency of 83% and an antenna efficiency of 98%, respectively, are achieved with a filter/antenna bandwidth of 4.8%. In the other approach, a two-pole cavity filter is integrated with a patch antenna, which adds an additional pole and forms a three-pole filter/antenna. A total filter/antenna efficiency of 91% is realized with a filter/antenna bandwidth of 8.5%. This novel filter/antenna integration technique also significantly reduces the form factor of the integrated RF front end. Prototype three-pole Chebyshev filter/antennas for both cases are demonstrated at X band. The measured impedance matching, efficiency, gain, and radiation pattern closely match simulation results. © 2011 IEEE.

Publication Date

7-11-2011

Publication Title

2011 IEEE 12th Annual Wireless and Microwave Technology Conference, WAMICON 2011

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/WAMICON.2011.5872870

Socpus ID

79959974277 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79959974277

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