Wideband Matching of Full-Wavelength Dipole With Reflector for Base Station

This communication introduces a wideband hybrid feeding method for full-wavelength dipole antennas with a reflector. A full-wavelength dipole is designed to cover the band from 698 to 960 MHz for cellular base station applications. Its matching circuit consists of a triple-tuned circuit and a quasi-...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2017-10, Vol.65 (10), p.5571-5576
Main Authors: Can Ding, Jones, Bevan, Guo, Y. Jay, Pei-Yuan Qin
Format: Article
Language:English
Subjects:
Base station
Dipole antennas
full-wavelength dipole
hybrid matching circuit
Impedance
Resistance
Resonators
RLC circuits
Wideband
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Summary:This communication introduces a wideband hybrid feeding method for full-wavelength dipole antennas with a reflector. A full-wavelength dipole is designed to cover the band from 698 to 960 MHz for cellular base station applications. Its matching circuit consists of a triple-tuned circuit and a quasi-quarter-wavelength impedance transformer. The proposed matching circuit can provide balanced feeding as a balun and has a compact size. The working mechanism and a complete design scheme of the proposed matching circuit are elaborated. The matching circuit is designed and optimized using a circuit theory model and then physically realized using microstrip lines based on full-wave simulation. The measured reflection coefficient |S 11 | is lesser than -14 dB across the entire band from 698 to 960 MHz, exhibiting a bandwidth of 32%. This is the first time that a wideband center-fed full-wavelength dipole is proposed.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2017.2738068