SMALL-SIZE COUPLED-FED TWO OPPOSITE-DIRECTION SPIRAL BRANCHES FOR HANDSET ANTENNA | Zendy

Ping Wang | Zendy; Can Cui | Zendy

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SMALL-SIZE COUPLED-FED TWO OPPOSITE-DIRECTION SPIRAL BRANCHES FOR HANDSET ANTENNA

Author(s) -

Ping Wang,

Can Cui

Publication year - 2016

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc16050501

Subject(s) - handset , spiral (railway) , physics , antenna (radio) , acoustics , electrical engineering , engineering , mechanical engineering

A compact coupled-fed handset antenna with multi-frequency band operation is proposed in this paper. It occupies a no-ground space of only 26 × 14mm2, and two wideband operations can be achieved by the coupled-fed two opposite-direction spiral branches. The low frequency bands of LTE700 operation are achieved by two spiral branches’ 0.25-wavelength monopole modes, which generate a dual-resonance mode at 740 and 780MHz. At around high frequency ranges, a 0.25wavelength monopole mode of a T-shaped monopole is generated at 1.75GHz, and combined with two 0.75-wavelength high-order monopole modes of the left and right side spiral branches to cover the DCS1800/PCS1900/UMTS2100/LTE2300/2500 bands. In addition, the proposed antenna is easily printed on the dielectric surface of a low cost FR4 substrate, which makes it suitable for practical mobile applications. The proposed antenna is successfully simulated, fabricated, and measured to validate the design.

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