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A single feed planar antenna with 4G tunable bands and consistent upper LTE bands between 1.29–2.05 GHz
Author(s) -
Damman Rafid Noel,
Mishra Ghanshyam,
Sharma Satish K.,
Babakhani Behrouz
Publication year - 2017
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.30677
Subject(s) - omnidirectional antenna , multi band device , bandwidth (computing) , planar , varicap , radio spectrum , physics , antenna (radio) , optoelectronics , optics , materials science , electrical engineering , telecommunications , computer science , engineering , capacitance , computer graphics (images) , electrode , quantum mechanics
A compact single feed dual‐band meandered planar antenna with 4G tunable bands and 1.29–2.05 GHz consistent bands is proposed here. In this antenna design, a varactor diode is implemented on the meandered arm to tune the operational frequency of the lower band between the 690 and 970 MHz frequencies. While the 4G band tuning, the rectangular‐shaped cutout portion of the antenna provides a consistent frequency bandwidth of 1.29–2.05 GHz. The measured fractional bandwidth of the entire tunable lower band range is 33.7% and a consistent 45.5% fractional bandwidth in the higher band. Both the tunable and consistent frequencies are experimentally verified to show acceptable matching based on S 11 ≤ −6 dB criteria and near‐omnidirectional radiation patterns. The antenna is able to cover several wireless (LTE) communication bands including 4G.