Title :
Frequency tunable antenna design technique with MEMS switches for mobile phone
Author :
Koga, Yohei ; Yamagajo, Takashi ; Shimizu, Masahiko
Author_Institution :
Assoc. of Super-Adv. Electron. Technol., YRP R&D Center, Yokosuka, Japan
Abstract :
A novel tunable antenna design technique for mobile phone applications is proposed in this paper. The proposed tunable antenna design technique has three operational modes, i.e., monopole, loop-type, and planar antenna mode. The monopole antenna mode is λ/4 resonant at about 700 MHz. The loop-type antenna mode is resonant at about 1 GHz. The planar antenna mode has wide bandwidth of 1GHz to 6GHz. Each mode is activated by MEMS switches. The proposed tunable antenna with MEMS switches covers 660 MHz to 6 GHz and can be applied to the several services such as GSM, LTE, WiMAX, and WiFi. The size of this antenna is 50 × 11.5 × 10 mm3. Compact dimension of 11.5 mm from the PCB ground plane of the proposed antenna is realized. This compact dimension enables the internal antenna for mobile phone applications.
Keywords :
loop antennas; microswitches; mobile radio; monopole antennas; planar antennas; GSM; LTE; MEMS switches; PCB ground plane; WiFi; WiMAX; bandwidth 1 GHz to 6 GHz; compact dimension; frequency 660 MHz to 6 GHz; frequency tunable antenna design; loop-type antenna mode; mobile phone; monopole mode; planar antenna mode; Microswitches; Mobile antennas; Mobile handsets; Planar arrays; Wideband; MEMS; Tunable antenna; internal antenna; mobile phone; monopole; multiband; wideband;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
