Dual-loop antenna with band-stop matching circuit for WWAN/LTE full metal-rimmed smartphone application

作者：Yan, Yi; Ban, Yong-Ling^*; Wu, Gang; Sim, Chow-Yen-Desmond

来源：IET Microwaves Antennas & Propagation, 2016, 10(15): 1715-1720.

DOI：10.1049/iet-map.2016.0209

• loop antennas
• Long Term Evolution
• wide area networks
• dual-loop antenna
• band-stop matching circuit
• hepta-band wireless wide area network-Long Term Evolution narrow-frame full metal-rimmed smartphone application
• dual-loop structure
• WWAN bands
• LTE bands

A dual-loop antenna for hepta-band wireless wide area network (WWAN)/long term evolution (LTE) narrow-frame full metal-rimmed smartphone application is proposed and studied. Compared with recent reported works, the main advantage of this design is the ability to achieve narrow-frame (smaller ground clearance) with unbroken metal-rim (or full metal-rimmed). Due to the modification of top no-ground portion, a band-stop matching circuit is used in this case to compensate the impedance mismatch caused by this modification. By combining the six resonant modes induced by the proposed dual-loop structure with the additional lower resonant mode excited by the matching circuit, the proposed antenna can successfully cover both WWAN bands (GSM850/900/DCS/PCS/UMTS2100) and LTE bands (LTE2300/2500). A prototype of the proposed antenna is fabricated, and the obtained results including reflection coefficients, efficiencies and gains are also presented and discussed.

• 出版日期2016-12-10
• 单位电子科技大学