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Dual-polarised antenna using unbalanced power dividers for small-cell base stations
- Authors
- Choi, Soobeom; Choi, Jaehoon
- Issue Date
- Mar-2016
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Keywords
- antenna radiation patterns; mobile antennas; cellular radio; Long Term Evolution; power dividers; UHF antennas; MIMO communication; antenna arrays; antenna feeds; unbalanced power dividers; small-cell base stations; compact dual-polarised multiple-input-multiple-output antenna; LTE band-5; stacking substrates; cavity-backed structures; feeding patch; antenna isolation characteristic; port isolation; front-to-back ratio; ground plane; frequency 820 MHz to 900 MHz
- Citation
- ELECTRONICS LETTERS, v.52, no.6, pp.419 - 420
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTRONICS LETTERS
- Volume
- 52
- Number
- 6
- Start Page
- 419
- End Page
- 420
- ISSN
- 0013-5194
- Abstract
- A compact, dual-polarised multiple-input and multiple-output antenna for small-cell base stations is proposed. This antenna is operating at long-term evolution (LTE) band-5 and consists of two stacking substrates and cavity-backed structures. To produce dual polarisation, two edges of the feeding patch on the lower substrate are individually fed by unbalanced power dividers with a phase difference of 90 degrees. These unbalanced power dividers improve the isolation characteristic of this antenna. Measured results show that the proposed antenna has a port isolation higher than 30 dB over the operating range of 820-900 MHz. Furthermore, a high front-to-back ratio of 13.5 dB is obtained in spite of the compact size because there are no slots on the ground plane.
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