Investigation of Transformer Turns Ratio Between Feed and Slot of Aperture Coupled Slot Antenna by Using S-11 Parameter

Lei Liu, Zabih Ghassemlooy, Alistair Sambell, Sean Danaher, Dave Smith

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This communication presents a simplified design approach to obtain the turns ratio n(f) which models the coupling between the microstrip feed and slot line of an aperture coupled slot antenna by using the S-11 parameter. Equations are derived using S-11 parameter to determinen(f) and simulations are carried out at 2 GHz using substrates of PCB FR4, Duroid 5870, and Duroid 6010. Results indicate n(f) is proportional to the slot length from 0 to 20 mm increasing rapidly with length. Over 20 mm slot length, the trend reduces and the value of n(f) tends towards 1. In addition, n(f) varies with the height of substrate but is little affected by dielectric constant of substrate which could therefore be ignored to simplify the design procedure. Measured results show good agreement with the theoretical model.
Original languageEnglish
Pages (from-to)5785-5787
JournalIEEE Transactions on Antennas and Propagation
Volume61
Issue number11
DOIs
Publication statusPublished - Nov 2013

Fingerprint Dive into the research topics of 'Investigation of Transformer Turns Ratio Between Feed and Slot of Aperture Coupled Slot Antenna by Using S-11 Parameter'. Together they form a unique fingerprint.

Cite this