Open AccessBandwidth enhancement of compact monopole antenna with triple band rejections
Author(s) -
Li Tong,
Zhu Cheng,
Cao Xiangyu,
Gao Jun
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.2301
Subject(s) - monopole antenna , stub (electronics) , bandwidth (computing) , j pole antenna , coaxial antenna , wimax , materials science , dipole antenna , physics , electrical engineering , optics , optoelectronics , antenna (radio) , computer science , engineering , telecommunications , wireless
A compact monopole antenna with enhanced bandwidth and triple band rejections for ultra‐wideband applications is presented. The base of the proposed antenna is a semicircular patch which is fed by a modified tapered coplanar waveguide line. By using the trident‐shaped feed line, much wider impedance bandwidth is obtained. To avoid potential interferences, two trapezoid stubs and a C‐shaped stub are printed on the back surface of the substrate and are connected to the antenna through three vias. The proposed antenna is practically fabricated with a compact size of 20 × 24 mm 2 . Good agreement is achieved between the simulation and measurement, which shows that the proposed antenna offers a very wide bandwidth from 3.02 to 20.8 GHz (149%) with triple band rejections covering the 3.5 GHz WiMAX and 5.2/5.8 GHz WLAN bands.