Optimization of Log-Periodic TV Reception Antenna with UHF Mobile Communications Band Rejection

Keyur Mistry, Pavlos Lazaridis, Zaharias Zaharis, Ioannis P. Chochliouros, Tian Hong Loh, Ioannis P. Gravas, David Cheadle

Research output: Contribution to journalArticle

Abstract

The coexistence of TV broadcasting and mobile services causes interference that leads to poor quality-of-service for TV consumers. Solutions usually found in the market involve external band-stop filters along with TV reception log-periodic and Yagi-Uda antennas. This paper presents a log-periodic antenna design without additional filtering that serves as a lower cost alternative to avoid interference from mobile services into the UHF TV. The proposed antenna operates in the UHF TV band (470–790 MHz-passband) and rejects the 800 MHz and 900 MHz bands (stopband) of 4G/LTE-800 and GSM900 services, respectively. Matching to 50 Ohms is very satisfactory in the passband with values of S11 below −12 dB. Furthermore, the antenna is highly directive with a realized gain of approximately 8 dBi and a front-to-back ratio greater than 20 dB.

Original languageEnglish
Article number1830
Number of pages12
JournalElectronics (Switzerland)
Volume9
Issue number11
DOIs
Publication statusPublished - 3 Nov 2020

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