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PÍTRA, K. RAIDA, Z. LÁČÍK, J.
Original Title
Low-Profile Circularly Polarized Antenna Exploiting Fabry-Perot Resonator Principle
Type
journal article in Web of Science
Language
English
Original Abstract
We designed a patch antenna surrounded by a mushroom-like electromagnetic band-gap (EBG) structure and completed it by a partially reflective surface (PRS). EBG suppresses surface waves and creates the bottom wall of the Fabry-Perot (FP) resonator. PRS plays the role of a planar lens and forms the top wall of the FP resonator. The novel PRS consists of a two-layer grid exhibiting inductive and capacitive (LC) behavior which allows us to obtain a reflection phase between –180° and +180°. Thanks to this PRS, we can control the height of the cavity in the range from λ/2 to λ/300. Obtained results show that the FP resonator antenna enables us to achieve a low profile and a high-gain. The patch is excited by a microstrip transmission line via the cross-slot aperture generating the circular polarization. Functionality of the described concept of the FP antenna was verified at 10 GHz. The antenna gain was 15 dBi, the impedance bandwidth 2.3% for |S11| < –10 dB, and the axial ratio bandwidth 0.6% for AR < 3.0 dB. Hence, the antenna is suitable for narrowband applications. Computer simulations show that the microwave FP antenna can be simply redesigned to serve as a source of circularly polarized terahertz waves.
Keywords
High gain antenna; Fabry-Perot resonator; terahertz source; partially reflective surface; mushroom-like electromagnetic band-gap structure; circular polarization.
Authors
PÍTRA, K.; RAIDA, Z.; LÁČÍK, J.
RIV year
2015
Released
1. 12. 2015
ISBN
1210-2512
Periodical
Radioengineering
Year of study
24
Number
4
State
Czech Republic
Pages from
898
Pages to
905
Pages count
8
BibTex
@article{BUT118083, author="Kamil {Pítra} and Zbyněk {Raida} and Jaroslav {Láčík}", title="Low-Profile Circularly Polarized Antenna Exploiting Fabry-Perot Resonator Principle", journal="Radioengineering", year="2015", volume="24", number="4", pages="898--905", doi="10.13164/re.2015.0898", issn="1210-2512" }