Dual band-notched monopole antenna with enhanced bandwidth for ultra-wideband wireless communications

The Journal of Engineering

Mohammad Akbari¹  Reza Movahedinia¹  Mehdi Saberi²  Neda Rojhani² 

[1] Concordia University;Islamic Azad University;

关键词: monopole antennas;    ultra wideband antennas;    ultra wideband communication;    microstrip antennas;    antenna radiation patterns;    dual band- notched monopole antenna;    enhanced bandwidth;    ultrawideband wireless communications;    UWB;    designed geometry;    octagonal radiating patch;    microstrip feedline;    asymmetric partial ground;    impedance bandwidth enhancement;    unilateral stepped structure;    E-shaped slots;    worldwide interoperability;    microwave access;    wireless local area network bands;    stable radiation patterns;   

DOI  :  10.1049/joe.2014.0130

来源: DOAJ

【 摘 要 】

A new configuration of an ultra-wideband (UWB) dual band-notched antenna is presented. The designed geometry consists of octagonal radiating patch, a 50 Ω microstrip feed-line on the front and an asymmetric partial ground on the back. For impedance bandwidth enhancement, a unilateral stepped structure is utilised on the ground. By etching two E-shaped slots connected to each other on the radiating patch and applying E-shaped defected ground structure on the back, dual notched bands are achieved. The antenna is printed on a low profile FR4 substrate with a compact size of 25 × 18 × 1 mm^3. The experimental results indicate that the antenna has an impedance bandwidth from 2.55 to 21.65 GHz for voltage standing wave ratio ≤2, except the notched bands on worldwide interoperability for microwave access and wireless local area network bands. Moreover, stable radiation patterns and gains within the operating band are shown.

【 授权许可】

Unknown