Dual‐loop antenna with band‐stop matching circuit for WWAN/LTE full metal‐rimmed smartphone application. Issue 15 (1st December 2016)

• Record Type: Journal Article
• Authors: Yan, Yi; Ban, Yong‐Ling; Wu, Gang; Sim, Chow‐Yen‐Desmond
• Is Part Of: IET microwaves, antennas & propagation. Volume 10:Issue 15(2016)
• Page Start: 1715
• Page End: 1720
• Publication Date: 2016-12-01
• Subjects: 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; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2016.0209
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : 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.