Title :
A multiband monopole antenna with double square slots and capacitive CPW feed for LTE, WiMAX and WLAN systems
Author :
Singsura, P. ; Chomtong, P. ; Meesomklin, S. ; Akkaraekthalin, P.
Author_Institution :
Dept. of Teacher Training in Electr. Eng., King Mongkut´s Univ. of Technol. North Bangkok, Bangkok, Thailand
Abstract :
This paper proposes a multiband monopole antenna with double square slots and capacitive CPW (CCPW) feed for applications in LTE, WiMAX and WLAN systems. The CCPW feed can control harmonic frequencies as desired and reduce size from ideal CPW length of λ/2 to only λ/8, while the slot technique can make return loss less than -10 dB and increase extension gain of the proposed antenna. The designed antenna has been operated at 1.8 GHz, 3.5 GHz, 5.5GHz for GSM, WiMAX and WLAN systems, respectively. The results show that the return losses are less than -10 dB at all frequency bands. The pattern is omni-directional and extension gains of all required bands are 2.45, 1.35 and 2.5dBi, respectively. This antenna was designed and implemented on FR-4 PCB. The experimental results of the fabricated antenna agree very well with simulation expectations using IE3D package.
Keywords :
Long Term Evolution; WiMax; antenna feeds; coplanar waveguides; monopole antennas; multifrequency antennas; slot antennas; wireless LAN; CCPW feed; IE3D package; LTE; WLAN; WiMAX; capacitive CPW feed; double square slots; fabricated antenna; harmonic frequencies; multiband monopole antenna; omnidirectional pattern; slot technique; Antenna feeds; Coplanar waveguides; Harmonic analysis; Resonant frequency; Slot antennas; CCPW; Capacitive feed; Multiband antenna; Slot antenna;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2015 12th International Conference on
Conference_Location :
Hua Hin
DOI :
10.1109/ECTICon.2015.7207113
