Cross-Polarized Radiation in a Cylindrical Dielectric Resonator Antenna: Identification of Source, Experimental Proof, and Its Suppression

Author

Guha, Debatosh ; Gajera, Halappa ; Kumar, Chandrakanta

Author_Institution

Inst. of Radio Phys. & Electron., Univ. of Calcutta, Kolkata, India

Volume

63

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

1863

Lastpage

1867

Abstract

In this communication, cross-polarized (XP) radiation of cylindrical dielectric resonator antenna (CDRA) has been investigated with a view to identify the source of the same. The study starts with a conjecture, which has been established through a systematic study using simulated results. The inference has been verified experimentally with the help of a set of prototypes. HEM_21δ has been identified as the XP generating mode and a small metallic grounded post of circular cross section has been conceived to perturb the same to prove the conjecture. This insight has been extended to demonstrate a practical application indicating a possibility of achieving up to 8-10-dB suppression in XP radiation from a CDRA.

Keywords

antenna radiation patterns; dielectric resonator antennas; CDRA cross-polarized radiation; circular cross section small metallic grounded post; cylindrical dielectric resonator antenna XP radiation; source identification; Dielectric resonator antennas; Dielectrics; Frequency measurement; Metals; Probes; Prototypes; Cross-polarized (XP) radiation; Dielectric resonator antenna; cross polarized radiation; dielectric resonator antenna (DRA); suppression of cross-polarized (XP) fields; suppression of cross-polarized fields;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2398127

Filename

7027219