Dual‐feed full‐metal‐case antenna for WWAN/LTE smartphone applications. Issue 7 (26th April 2016)

• Record Type: Journal Article
• Authors: Ban, Yong‐Ling; Li, Peng‐Peng; Sim, Chow‐Yen‐Desmond; Chen, Xiaodong
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 26:Issue 7(2016)
• Page Start: 595
• Page End: 601
• Publication Date: 2016-04-26
• Subjects: full‐metal‐case antenna -- small antenna -- dual‐feed antenna -- hepta‐band LTE/WWAN antenna; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21007
• Languages: English
• ISSNs: 1096-4290

Abstract

ABSTRACT: A dual‐feed small size full‐metal‐case (FMC) antenna for hepta‐band LTE/WWAN operation in smartphone applications is presented. The antenna proposed here is an integrated part of the full metal case located at the top edge of the smartphone, and it only occupies a small volume of 5 mm × 70 mm × 6 mm. It has two feeding ports that are separately connected to an ON/OFF switch (SW1 and SW2) for controlling the lower and higher operation bands, respectively. For the case when SW1 (ON) and SW2 (OFF), Port‐1 is engaged, and a lower operating band that covers the GSM850/900 operation (824–960 MHz) is achieved. In contrast, Port‐2 will be engaged for the case when SW1 (OFF) and SW2 (ON), and with the aid of a wideband matching circuit, the antenna can induce a higher operating band that can cover the DCS/PCS/UMTS2100/LTE2300/LTE2500 operations (1690–2690 MHz). Detailed design considerations of the proposed FMC antenna are described, and both experimental and simulation results are also presented and discussed. © 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:595–601, 2016.