A New BTS Antenna for Simultaneous Operation in 900GSM Frequency Bands and LTE

Maryam Mohammadifar ¹ ( Department of Electrical Engineering, Urmia Branch, Islamic Azad University, Urmia Iran )
Pejman Mohammadi ² ( Microwave and antenna research center, Urmia Branch, Islamic Azad University, Urmia, Iran )
Yashar Zehforoosh ³ ( Microwave and antenna research center, Urmia Branch, Islamic Azad University, Urmia, Iran )

Submited date : 2024-07-25 Accepted date : 2024-09-03

Keywords: Base Station Antenna, Dual-Polarization, Printed Antenna, Trident-Shaped Feeding,

Abstract :

A new design of the dual-band and dual-polarized base station antennas for supporting the mobile communication systems operating at the GSM/DCS/PCS/UMTS and LTE frequency bands is presented. A wide input impedance matching bandwidth is achieved due to a trident-shaped feeding technique. Two printed dipoles, which are located perpendicularly to each other and fed by stepped-microstrip lines, establish the proposed antenna. In addition, by locating a low-profile cavity-backed structure, as a metal reflector under the antenna, bidirectional radiations of the dipoles are switched to unidirectional radiations with an increase in the gain of the antenna.  Results indicate that the proposed antenna is suitable for base station applications at the operating frequencies of 900, 1800, 1900, and 2300 MHz.  peak gains of 11/47and 10/40 dBi are attained at port-1 and port-2.  The overall dimension of the antenna is 168 × 168 mm2, which is mounted upon a  222 × 222 mm2 cavity-backed structure with a depth of 42mm.

Highlights:

• Simple antenna structure compared to previous designs.
• New dual-band antenna design with dual polarization for simultaneous operation in 900GSM and LTE frequency bands.
• Good and high gain compared to previous designs.

 

Citation: M. Mohammadifar, P. Mohammadi, and Y. Zehforoosh, “A New BTS Antenna for Simultaneous Operation in 900 GSM Frequency Bands and LTE,” Journal of Southern Communication Engineering, vol. 14, no. 56, pp. 78–92, 2025, doi:10.30495/jce.2025.1993480.1337 [in Persian].

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