A Low-Cost 3-D Printed THz Open Resonator Antenna

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
View graph of relations


Original languageEnglish
Pages (from-to)84-88
Journal / PublicationIEEE Antennas and Wireless Propagation Letters
Issue number1
Online published30 Aug 2022
Publication statusPublished - Jan 2023


We propose a design of an open resonator antenna to fulfill the requirements of high gain and low cost at 0.1 THz. A planar cavity with a loaded phase-shifting periodic structure is used to imitate a spherical cavity, which helps to support higher-order modes and hence, widen the bandwidth. The design procedure is introduced in detail. With the help of high-precision 3-D printing technology, the periodic structure can be manufactured with a relatively lower cost and complexity. Measurements were carried out to prove that the proposed antenna can achieve a 3 dB gain bandwidth of 13% and a peak gain over 16.8 dBi.

Research Area(s)

  • 3-D printing, Antenna measurements, Antennas, Bandwidth, Costs, Gain, open resonator antenna (ORA), periodic structure, Periodic structures, Resonant frequency, terahertz (THz)