A Compact Frequency Reconfigurable Antenna for LTE Mobile Handset Applications

• Published in: International journal of antennas and propagation Vol. 2015; no. 2015; pp. 1 - 10
• Main Authors: Lee, Hyunwoo, Yoon, Yonghyun, Mun, Byeonggwi, Wi, Hyunho, Choi, Munyong, Lee, Byungje
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2015; Hindawi Limited; Wiley
• Subjects: Antennas; Bands; Bandwidths; Communication; Design; Efficiency; High frequencies; Industrial design; Low frequencies; Microelectromechanical systems; Mobile communication systems; PIN diodes; Slits; Spectrum allocation; Telecommunications industry; Wireless carriers; Wireless communication; Wireless communications
• ISSN: 1687-5869; 1687-5877
• DOI: 10.1155/2015/764949

A compact (8 × 62 × 5 mm3; 2.48 cc) frequency reconfigurable antenna that uses electrical switching with PIN diodes is proposed for the low frequency LTE band (699 MHz–862 MHz), high frequency LTE band (2496 MHz–2690 MHz), GSM850/900 bands (824 MHz–960 MHz), and DCS/PCS/WCDMA bands (1710 MHz–2170 MHz). The penta-band PIFA is first designed for GSM850/900/DCS/PCS/WCDMA bands by using two slits and ground pins within a limited antenna volume (8 × 54.6 × 5 mm3; 2.18 cc). The frequency reconfigurable antenna based on this penta-band PIFA is thus proposed to additionally cover all LTE bands. The proposed antenna has two PIN diodes with an optimal location. For State 1 (PIN diode 1: ON state, PIN diode 2: OFF state), the proposed antenna covers the low frequency LTE band, DCS/PCS/WCDMA bands, and high frequency LTE band. For State 2 (PIN diode 1: OFF state, PIN diode 2: ON state), the antenna covers the GSM850/900 bands. Simulated and measured results show that the total efficiency of the proposed antenna was greater than 40% for all operating frequency bands.