Novel multiband autonomous impedance restoration antenna system by using a probe

Author

Higaki, Makoto ; Obayashi, Shigeru ; Shoki, Hiroki

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

Recently the number of operating frequency bands for a single mobile terminal has been increasing, while the size reduction for a built-in antenna is required. Therefore, it has become more difficult for the antennas built-in mobile terminal to cover all frequency bands with high efficiency. Moreover, the body of the user and the other objects in the vicinity of the mobile terminal usually detune the antennas. In this paper, a novel multiband autonomous impedance restoration antenna system by using a tiny probe has been proposed. The antenna is a 60mm×10mm sized planar monopole on the same plane with the 60mm×90mm ground plane and covers the following wireless communication system bands: LTE (704-746MHz and 2500-2690MHz), GSM850 (824-894MHz), EGSM (880-960MHz), DCS (1710-1880MHz), PCS (1850-1990MHz) and UMTS (1920-2170MHz). It has been shown that the VSWR and total efficiency η_tot(transmission coefficient T×radiation efficiency η_rad) of the antenna are optimized as the received power of a probe is maximized regardless of frequencies.

Keywords

3G mobile communication; Long Term Evolution; cellular radio; monopole antennas; planar antennas; probes; DCS; EGSM; GSM850; LTE; PCS; T×radiation efficiency; UMTS; VSWR; built-in antenna; frequency 1710 MHz to 180 MHz; frequency 1850 MHz to 1990 MHz; frequency 1920 MHz to 2170 MHz; frequency 2500 MHz to 2690 MHz; frequency 704 MHz to 746 MHz; frequency 824 MHz to 894 MHz; frequency 880 MHz to 960 MHz; frequency bands; mobile terminal; multiband autonomous impedance restoration; multiband autonomous impedance restoration antenna system; planar monopole antenna; probe; single mobile terminal; transmission coefficient; wireless communication system bands; Impedance; Microwave antennas; Microwave communication; Mobile antennas; Probes; Receiving antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6349422

Filename

6349422