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Printed dual‐band base station antenna for GSM/DCS/PCS/UMTS and LTE applications with dual polarization
Author(s) -
Mohammadifar Maryam,
Mohammadi Pejman,
Zehforoosh Yashar
Publication year - 2020
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.2800
Subject(s) - gsm , electrical engineering , umts frequency bands , multi band device , microstrip antenna , dipole antenna , omnidirectional antenna , engineering , physics , antenna (radio) , electronic engineering , telecommunications
Summary 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. Measurement results indicate that the proposed antenna is suitable for base station applications at the operating frequencies of 800/900/1800/1900/2300 MHz. The isolation is better than 20 dB, and peak gains of 10.08 and 9.96 dBi are attained at port‐1 and port‐2, respectively. Furthermore, the HPBWs of the antenna in H‐plane is more than 61° for each port. The overall dimension of the antenna is 168 × 168 mm 2 , which is mounted upon a 222 × 222 mm 2 cavity‐backed structure with a depth of 42 mm.