Abstract
A circularly polarised radial line slot array antenna (CP-RLSA) is proposed in this paper for direct broadcast satellite applications. A new design suggestion has been introduced and investigated in this study to improve the performance and pattern quality of the antenna. The antenna is composed of spiral rings on the top plate and made with several thousand of slot pairs. The antenna supports waveguide like structure which is composed of air cavity and dielectric materials. An antenna prototype operating at 20 GHz was designed and simulated. The experimental measurements and simulation results show that the antenna has successfully satisfied the required technical specification. The antenna has achieved a maximum gain of 32.2 dBic at 19.4 GHz. The CP-RLSA antenna has demonstrated an radiation efficiency of 95.3% and a total efficiency of 90.3% at 20 GHz. The antenna has also fulfilled the condition of circular polarisation, i.e. axial ratio is below 3-dB level with appropriate radiation patterns. At the operating frequency 20 GHz, the antenna has achieved a gain of 28.1 dBic with side lobe level as low as -14.4 dB.
Original language | English |
---|---|
Title of host publication | 2nd International Conference on Electrical and Electronic Engineering ICEEE 2017 |
Subtitle of host publication | 27-29 December 2017 |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Number of pages | 4 |
ISBN (Electronic) | 9781538633410, 9781538633397 |
ISBN (Print) | 9781538633403, 9781538633427 |
DOIs | |
Publication status | Published - 2017 |
Event | 2nd International Conference on Electrical and Electronic Engineering, ICEEE 2017 - Rajshahi, Bangladesh Duration: 27 Dec 2017 → 29 Dec 2017 |
Conference
Conference | 2nd International Conference on Electrical and Electronic Engineering, ICEEE 2017 |
---|---|
Country/Territory | Bangladesh |
City | Rajshahi |
Period | 27/12/17 → 29/12/17 |
Keywords
- slot antenna
- pattern quality
- mobile DBS
- circularly polarised
- CP-RLSA