A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas

Komsan Kanjanasit, Changhai Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the characteristics of broadband radiation of a resonant cavity antenna (RCA) over the X-band (8∼12 GHz). The study focuses on an effective antenna aperture in obtaining the flat ripple directivity with broad bandwidth. The investigation is performed on a finite-size metamaterial superstrate. The RCA structure is composed of a two-layer metamaterial superstrate and an aperture-coupled patch antenna source. The metamaterial configuration is formed by stacking two identical patch arrays with a small air-gap separation of 0.133λ at 10 GHz. Its property enables a transmission resonance and this leads to ability to enhance the primary field excitation. In the RCA synthesis, the radiation of the broadband RCAs is studied for the superstrate with different array sizes of the unit cell. The simulation shows a decrease of the broadside radiation at the middle of the frequency bandwidth. In the study, the effective antenna aperture with a flat ripple is obtained for the cell array size of 5x5. This corresponds to 1.25λ by 1.25λ for a broadband radiation bandwidth and high directivity with the array period of 0.25λ. The radiation results are simulated and obtained in the observation of the non-uniform surface current distribution on the patch array. By using an electric line source as a primary radiator, the electromagnetic (EM) field distribution is illustrated to rely on the nature of the primary antenna source which provides a spherical wave-front radiation.

Original languageEnglish
Title of host publication2019 7th International Electrical Engineering Congress (iEECON)
PublisherIEEE
ISBN (Electronic)9781728107295
DOIs
Publication statusPublished - 23 Dec 2019
Event7th International Electrical Engineering Congress 2019 - Cha-am, Hua Hin, Thailand
Duration: 6 Mar 20198 Mar 2019

Conference

Conference7th International Electrical Engineering Congress 2019
Abbreviated titleiEECON 2019
CountryThailand
CityCha-am, Hua Hin
Period6/03/198/03/19

Fingerprint

Cavity resonators
Broadband
Patch
Antenna
Cavity
Antennas
Radiation
Metamaterials
Bandwidth
Ripple
Radiators
Microstrip antennas
Cell
Electromagnetic fields
Stacking
Electric lines
Wave Front
Electromagnetic Fields
Excitation
Synthesis

Keywords

  • Broadband Radiation
  • Metamaterial Superstrate
  • Resonant Cavity Antenna

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization
  • Electrical and Electronic Engineering

Cite this

Kanjanasit, K., & Wang, C. (2019). A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas. In 2019 7th International Electrical Engineering Congress (iEECON) [8938925] IEEE. https://doi.org/10.1109/iEECON45304.2019.8938925
Kanjanasit, Komsan ; Wang, Changhai. / A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas. 2019 7th International Electrical Engineering Congress (iEECON). IEEE, 2019.
@inproceedings{966a9121690d4dd7a5f36a7fefb722c1,
title = "A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas",
abstract = "This paper presents the characteristics of broadband radiation of a resonant cavity antenna (RCA) over the X-band (8∼12 GHz). The study focuses on an effective antenna aperture in obtaining the flat ripple directivity with broad bandwidth. The investigation is performed on a finite-size metamaterial superstrate. The RCA structure is composed of a two-layer metamaterial superstrate and an aperture-coupled patch antenna source. The metamaterial configuration is formed by stacking two identical patch arrays with a small air-gap separation of 0.133λ at 10 GHz. Its property enables a transmission resonance and this leads to ability to enhance the primary field excitation. In the RCA synthesis, the radiation of the broadband RCAs is studied for the superstrate with different array sizes of the unit cell. The simulation shows a decrease of the broadside radiation at the middle of the frequency bandwidth. In the study, the effective antenna aperture with a flat ripple is obtained for the cell array size of 5x5. This corresponds to 1.25λ by 1.25λ for a broadband radiation bandwidth and high directivity with the array period of 0.25λ. The radiation results are simulated and obtained in the observation of the non-uniform surface current distribution on the patch array. By using an electric line source as a primary radiator, the electromagnetic (EM) field distribution is illustrated to rely on the nature of the primary antenna source which provides a spherical wave-front radiation.",
keywords = "Broadband Radiation, Metamaterial Superstrate, Resonant Cavity Antenna",
author = "Komsan Kanjanasit and Changhai Wang",
year = "2019",
month = "12",
day = "23",
doi = "10.1109/iEECON45304.2019.8938925",
language = "English",
booktitle = "2019 7th International Electrical Engineering Congress (iEECON)",
publisher = "IEEE",
address = "United States",

}

Kanjanasit, K & Wang, C 2019, A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas. in 2019 7th International Electrical Engineering Congress (iEECON)., 8938925, IEEE, 7th International Electrical Engineering Congress 2019, Cha-am, Hua Hin, Thailand, 6/03/19. https://doi.org/10.1109/iEECON45304.2019.8938925

A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas. / Kanjanasit, Komsan; Wang, Changhai.

2019 7th International Electrical Engineering Congress (iEECON). IEEE, 2019. 8938925.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas

AU - Kanjanasit, Komsan

AU - Wang, Changhai

PY - 2019/12/23

Y1 - 2019/12/23

N2 - This paper presents the characteristics of broadband radiation of a resonant cavity antenna (RCA) over the X-band (8∼12 GHz). The study focuses on an effective antenna aperture in obtaining the flat ripple directivity with broad bandwidth. The investigation is performed on a finite-size metamaterial superstrate. The RCA structure is composed of a two-layer metamaterial superstrate and an aperture-coupled patch antenna source. The metamaterial configuration is formed by stacking two identical patch arrays with a small air-gap separation of 0.133λ at 10 GHz. Its property enables a transmission resonance and this leads to ability to enhance the primary field excitation. In the RCA synthesis, the radiation of the broadband RCAs is studied for the superstrate with different array sizes of the unit cell. The simulation shows a decrease of the broadside radiation at the middle of the frequency bandwidth. In the study, the effective antenna aperture with a flat ripple is obtained for the cell array size of 5x5. This corresponds to 1.25λ by 1.25λ for a broadband radiation bandwidth and high directivity with the array period of 0.25λ. The radiation results are simulated and obtained in the observation of the non-uniform surface current distribution on the patch array. By using an electric line source as a primary radiator, the electromagnetic (EM) field distribution is illustrated to rely on the nature of the primary antenna source which provides a spherical wave-front radiation.

AB - This paper presents the characteristics of broadband radiation of a resonant cavity antenna (RCA) over the X-band (8∼12 GHz). The study focuses on an effective antenna aperture in obtaining the flat ripple directivity with broad bandwidth. The investigation is performed on a finite-size metamaterial superstrate. The RCA structure is composed of a two-layer metamaterial superstrate and an aperture-coupled patch antenna source. The metamaterial configuration is formed by stacking two identical patch arrays with a small air-gap separation of 0.133λ at 10 GHz. Its property enables a transmission resonance and this leads to ability to enhance the primary field excitation. In the RCA synthesis, the radiation of the broadband RCAs is studied for the superstrate with different array sizes of the unit cell. The simulation shows a decrease of the broadside radiation at the middle of the frequency bandwidth. In the study, the effective antenna aperture with a flat ripple is obtained for the cell array size of 5x5. This corresponds to 1.25λ by 1.25λ for a broadband radiation bandwidth and high directivity with the array period of 0.25λ. The radiation results are simulated and obtained in the observation of the non-uniform surface current distribution on the patch array. By using an electric line source as a primary radiator, the electromagnetic (EM) field distribution is illustrated to rely on the nature of the primary antenna source which provides a spherical wave-front radiation.

KW - Broadband Radiation

KW - Metamaterial Superstrate

KW - Resonant Cavity Antenna

UR - http://www.scopus.com/inward/record.url?scp=85077964507&partnerID=8YFLogxK

U2 - 10.1109/iEECON45304.2019.8938925

DO - 10.1109/iEECON45304.2019.8938925

M3 - Conference contribution

AN - SCOPUS:85077964507

BT - 2019 7th International Electrical Engineering Congress (iEECON)

PB - IEEE

ER -

Kanjanasit K, Wang C. A finite-size superstrate based on identical patch arrays for broadband resonant cavity antennas. In 2019 7th International Electrical Engineering Congress (iEECON). IEEE. 2019. 8938925 https://doi.org/10.1109/iEECON45304.2019.8938925