Design of a CSRR based compact microstrip antenna for image rejection in RF down-converter based WLAN receivers

One major problem in mixer based RF down-converters and superheterodyne receivers is the presence of image frequencies. There have been a number of approaches, both in analog and digital domain, to address this issue. Of late, attempts have been made to integrate the image rejection filter with the...

Full description

Saved in:
Bibliographic Details
Published in:International journal of electronics and communications 2017-04, Vol.74, p.128-134
Main Authors: Goswami, Sivaranjan, Sarmah, Kumaresh, Sarma, Angana, Sarma, Kandarpa Kumar, Baruah, Sunandan
Format: Article
Language:English
Subjects:
Compact antenna
Complementary split ring resonator
Image filtering
Metamaterial
Microstrip antenna
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:One major problem in mixer based RF down-converters and superheterodyne receivers is the presence of image frequencies. There have been a number of approaches, both in analog and digital domain, to address this issue. Of late, attempts have been made to integrate the image rejection filter with the antenna so that there is no chance of image frequencies being received. Complementary split ring resonators (CSRR) are planar metamaterial structures that can yield negative value of effective permittivity of a material. This property is utilized here to notch out two possible image frequencies in a compact rectangular patch antenna for WLAN application at 2.4GHz. The antenna provides a suppression of about 15dB at 1.4GHz and that of about 21dB at 3.9GHz. The CSRR further helps in reducing the electrical size of the antenna by 14.3%.
ISSN:1434-8411
1618-0399
DOI:10.1016/j.aeue.2017.02.004