Circularly polarized slot antennas with wideband performance

Nasimuddin, Arokiaswami Alphones, N. Jeevanandham

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


Circularly polarized (CP) slot antennas exhibiting the wideband performance are studied using L-shaped stub along with microstrip feed-line for dual-band applications. The proposed antennas consist of a wide-slot radiator along with a microstrip feed-line and an L-shaped stub. An L-shaped stub is used to excite the slot radiator for a CP radiation. Various slot-shaped antennas are compared based on CP radiation bandwidth with a fixed slot-shaped perimeter. The hexagonal- and circular-shaped-slot antennas are useful to achieve a wideband CP radiation. The circular-shaped-slot antenna is designed and fabricated for dual-band CP radiation using slit/slot in the L-shaped stub. The circular-slot antenna measured performances are 24% (3.0-3.84 GHz) and 18% (4.3-5.15 GHz) for 3-dB AR bandwidths for the 3.5 and 4.5 GHz bands. The measured gain is 4.0 dBic for 3.5 GHz band and 3.0 dBic for 4.5 GHz band at the boresight.

Original languageEnglish
Title of host publication2015 Asia-Pacific Microwave Conference (APMC2015)
Subtitle of host publicationproceedings
EditorsWei Hong, Xiaowei Zhu, Guangqi Yang, Zhe Song, Fan Meng
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages3
ISBN (Electronic)9781479987672, 9781479987665
ISBN (Print)9781479987658
Publication statusPublished - 2015
Externally publishedYes
EventAsia-Pacific Microwave Conference (27th : 2015) - Nanjing, China
Duration: 6 Dec 20159 Dec 2015
Conference number: 27th


OtherAsia-Pacific Microwave Conference (27th : 2015)
Abbreviated titleAPMC2015

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