Broadband circularly-polarised antenna consisting of four notch slot radiators
A broadband antenna consisting of four notch slots is proposed to generate circularly-polarised radiation. Wide bandwidth is achieved by using notch slots operating in the double-resonance range. A separate feeding network is designed to meet the requirement of sequential rotation excitation for...
Saved in:
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/98210 http://hdl.handle.net/10220/13266 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | A broadband antenna consisting of four notch slots is proposed to
generate circularly-polarised radiation. Wide bandwidth is achieved
by using notch slots operating in the double-resonance range. A
separate feeding network is designed to meet the requirement of
sequential rotation excitation for the four slots maintaining a corresponding
phase difference of 908 between adjacent slots. Simulated
and measured results are presented to demonstrate the high directivity
and wide bandwidth of the circularly-polarised antenna. The designed
antenna exhibits a bandwidth from 4.9 to 6.1GHz for both |S11|≤
210 dB and AR≤ 3 dB, which is 21% of the centre frequency of
5.5GHz. Peak gain at 5.5 GHz is 7.6 dBic along the zenith direction,
with less than 1dB gain variation within the operating bandwidth. |
|---|