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Compact quad‐band cylindrical dielectric resonator antenna with complementary C‐shaped defected ground structure
Author(s) -
Sharma Anand,
Gangwar Ravi Kumar
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29627
Subject(s) - dielectric resonator antenna , microstrip , microstrip antenna , center frequency , microwave , patch antenna , wimax , ground plane , bandwidth (computing) , antenna (radio) , physics , dielectric , optics , optoelectronics , materials science , electrical engineering , telecommunications , engineering , wireless , band pass filter
In this article, compact quad‐band cylindrical dielectric resonator antenna (CDRA) with complementary C‐shaped defected ground structure (DGS) is examined. The proposed antenna design is excited by annular shape microstrip line. Annular shape microstrip line, at center position and shifted from center position, are used to generate HE 12δ and HE 11δ mode in CDRA at 12.1 GHz and 11.6 GHz, respectively. Complementary C‐shaped DGS is used to make proposed antenna design compact (approximately half the resonant frequency of CDRA mode). Archetype of antenna structure has been fabricated and experimentally tested. The proposed antenna operates in four frequency bands 3.21–3.63 GHz; 4.83–6.78 GHz; 7.25–7.77 GHz, and 11.76–12.45 GHz with a fractional bandwidth of 14.36%, 23.14%, 3.68%, and 1.88%, respectively. The proposed antenna design is applicable for WLAN (5.2/5.8 GHz) and WiMAX (3.5/5.5 GHz) bands. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:611–615, 2016