Title

A Vertical Integration Of High-Q Filters With Patch Antennas With Enhanced Bandwidth And High Efficiency

Keywords

Bandpass filter; cavity resonator; packaging; patch antenna

Abstract

A new approach to integrate high quality (Q)-factor 3-D vertical cavity filters with patch antennas into a single unit is presented in this paper. This integrated filter/antenna system exhibits small footprint, high efficiency, and enhanced bandwidth. The patch antenna is designed to provide an additional transmission pole for the filtering function and work as a highly efficient radiator. In addition, this integrated patch antenna with a filter can achieve a bandwidth much larger than a standalone patch antenna with the same geometry. A prototype three-pole Chebyshev filter/antenna is demonstrated at X band. The center frequency and fractional bandwidth of the filter/antenna system are 10.27 GHz and 8.7%, respectively. Due to the high Q factor (∼700) of the cavity resonator and near loss-less transition between the antenna and filter, the overall efficiency of the filter/antenna system is simulated to be as high as 91%. The reduced footprint, enhanced bandwidth, and low-loss performance of these integrated filter/antenna systems make them particularly useful for phased array applications. The measured impedance matching, efficiency, gain, and radiation pattern closely agree with simulation results. © 2011 IEEE.

Publication Date

9-7-2011

Publication Title

IEEE MTT-S International Microwave Symposium Digest

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/MWSYM.2011.5972721

Socpus ID

80052311737 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80052311737

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