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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Druckformat: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v78.i4.20
pages 295-303

DEFECTED GROUND APPROACH TO REDUCE BACK RADIATIONS IN MAGNETO-ELECTRIC DIPOLE ANTENNA

Neetu
Department of Electronics and Communication, Manipal University Jaipur, Dehmi Kalan, Near GVK Toll Plaza, Jaipur-Ajmer Expressway, Jaipur, Rajasthan 303007, India
V. N. Tiwari
Department of Electronics and Communication, Manipal University Jaipur, Dehmi Kalan, Near GVK Toll Plaza, Jaipur-Ajmer Expressway, Jaipur, Rajasthan 303007, India

ABSTRAKT

An improved design of magneto-electric dipole antenna with high front to back ratio (FBR) for mobile base station is proposed. To reduce the back radiations in the antenna, semi oval defects in the ground plane has been proposed. The prototype antenna has achieved high FBR without much affecting the gain and bandwidth. The proposed antenna has achieved impedance bandwidth of 71.4% for the frequency range 1.8 GHz–3.8 GHz. The measured FBR varies from 21 dB to 29 dB with stable gain of 7.1 dBi and unidirectional radiation pattern with symmetrical E-plane and H-plane has also been obtained.


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