Bulletin of Electrical Engineering and Informatics
Vol 15, No 4: August 2026

Wideband bow-tie slot antenna with defected ground structure for efficient radio frequency energy harvesting

Usman Yau (Multimedia University)
Jun Jiat Tiang (Multimedia University)
Surajo Muhammad (Multimedia University)
Nazih Khaddaj Mallat (Al Ain University)
Isiyaku Yau (Ahmadu Bello University)



Article Info

Publish Date
01 Aug 2026

Abstract

This work proposes the design and performance assessment of a wideband bow-tie slot antenna specifically developed for radio frequency energy harvesting (RFEH). The design employs a self-complementary bow-tie configuration, integrated with a defected ground structure (DGS) and fractal elements, to achieve improved bandwidth (BW) and gain. It achieved -10 dB simulated (measured) BW of 2.50 GHz (2.10 GHz) over a frequency span of 0.80-3.30 GHz (0.80 to 2.90 GHz) respectively. The results cover a target fo, simulated and measured fractional bandwidth (FBW) of 122% and 114% respectively, with a peak realized gain of 6.42 dBi. The antenna also achieved a compact dimension of 126 mm × 90 mm (0.73 lamda g × 0.52 lamda g). It is finally integrated with a wideband RF-rectifier for the purpose of validation. The design enables continuous wireless power transfer (WPT) suitable for RFEH in internet of things (IoT) devices and sensor nodes.

Copyrights © 2026






Journal Info

Abbrev

EEI

Publisher

Subject

Electrical & Electronics Engineering

Description

Bulletin of Electrical Engineering and Informatics (Buletin Teknik Elektro dan Informatika) ISSN: 2089-3191, e-ISSN: 2302-9285 is open to submission from scholars and experts in the wide areas of electrical, electronics, instrumentation, control, telecommunication and computer engineering from the ...