The paper demonstrates an effective technique to significantly enhance the bandwidth and radiation gain of an otherwise narrowband composite right/left-handed transmission-line (CRLH-TL) antenna using a non-Foster impedance matching circuit (NF-IMC) without affecting the antenna's stability. This is achieved by using the negative reactance of the NF-IMC to counteract the input capacitance of the antenna. Series capacitance of the CRLH-TL unit-cell is created by etching a dielectric spiral slot inside a rectangular microstrip patch that is grounded through a spiraled microstrip inductance. The overall size of the antenna, including the NF-IMC at its lowest operating frequency is 0.335 lambda (0)x0.137 lambda (0)x0.003 lambda (0), where lambda (0) is the free-space wavelength at 1.4 GHz. The performance of the antenna was verified through actual measurements. The stable bandwidth of the antenna for |S-11|<= -18 dB is greater than 1 GHz (1.4-2.45 GHz), which is significantly wider than the CRLH-TL antenna without the proposed impedance matching circuit. In addition, with the proposed technique the measured radiation gain and efficiency of the antenna are increased on average by 3.2 dBi and 31.5% over the operating frequency band.

Alibakhshikenari, M., Virdee, B.s., Althuwayb, A.a., Azpilicueta, L., Parchin, N.o., See, C.h., et al. (2021). Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board. SCIENTIFIC REPORTS, 11(1), 7472 [10.1038/s41598-021-86973-x].

Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board

Limiti E.
2021-04-01

Abstract

The paper demonstrates an effective technique to significantly enhance the bandwidth and radiation gain of an otherwise narrowband composite right/left-handed transmission-line (CRLH-TL) antenna using a non-Foster impedance matching circuit (NF-IMC) without affecting the antenna's stability. This is achieved by using the negative reactance of the NF-IMC to counteract the input capacitance of the antenna. Series capacitance of the CRLH-TL unit-cell is created by etching a dielectric spiral slot inside a rectangular microstrip patch that is grounded through a spiraled microstrip inductance. The overall size of the antenna, including the NF-IMC at its lowest operating frequency is 0.335 lambda (0)x0.137 lambda (0)x0.003 lambda (0), where lambda (0) is the free-space wavelength at 1.4 GHz. The performance of the antenna was verified through actual measurements. The stable bandwidth of the antenna for |S-11|<= -18 dB is greater than 1 GHz (1.4-2.45 GHz), which is significantly wider than the CRLH-TL antenna without the proposed impedance matching circuit. In addition, with the proposed technique the measured radiation gain and efficiency of the antenna are increased on average by 3.2 dBi and 31.5% over the operating frequency band.
apr-2021
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - ELETTRONICA
English
Con Impact Factor ISI
Alibakhshikenari, M., Virdee, B.s., Althuwayb, A.a., Azpilicueta, L., Parchin, N.o., See, C.h., et al. (2021). Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board. SCIENTIFIC REPORTS, 11(1), 7472 [10.1038/s41598-021-86973-x].
Alibakhshikenari, M; Virdee, Bs; Althuwayb, Aa; Azpilicueta, L; Parchin, No; See, Ch; Abd-Alhameed, Ra; Falcone, F; Huynen, I; Denidni, Ta; Limiti, E...espandi
Articolo su rivista
File in questo prodotto:
File Dimensione Formato  
Bandwidth and Gain Enhancement of Composite Right Left Handed Metamaterial Transmission Line Planar Antenna Employing a Non Foster Impedance Matching Circuit Board.pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Non specificato
Dimensione 2.39 MB
Formato Adobe PDF
2.39 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/293964
Citazioni
  • ???jsp.display-item.citation.pmc??? 3
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 9
social impact