Abstract
This study presents a dual-band reflectarray (RA) with circular polarization based on Liquid Crystal (LC) technology. An LC Unit Cell (UC) is proposed which consists of 3 High-Band (HB) elements that are interleaved around a Low-Band (LB) element. The element consists of a cross-patch on top of a slot-loaded square patch. The LC is used as a substrate between the cross and square patch. By applying a variable voltage between the two patches, the resonant frequency of each element changes and provides the required phase difference. A 20× 20 element RA is simulated with 400 LB elements and 1200 HB elements. The RA 3-dB gain and Axial Ratio (AR) overlapped bandwidth at 19.5 GHz and 28.5 GHz are 8%, and 9.5%, respectively. The beam-scanning range at each frequency band is pm 45°. The proposed design can be a good candidate for the satellite constellations at the millimeter wave.
| Original language | English |
|---|---|
| Title of host publication | 2024 Asia-Pacific Microwave Conference : Microwaves for Sustainable Future, APMC 2024 |
| Number of pages | 3 |
| Publisher | IEEE (Institute of Electrical and Electronics Engineers) |
| Publication date | 2024 |
| Pages | 489-491 |
| ISBN (Print) | 979-8-3503-6355-5 |
| ISBN (Electronic) | 979-8-3503-6354-8 |
| DOIs | |
| Publication status | Published - 2024 |
| Event | 2024 IEEE Asia-Pacific Microwave Conference, APMC 2024 - Bali, Indonesia Duration: 17 Nov 2024 → 20 Nov 2024 |
Conference
| Conference | 2024 IEEE Asia-Pacific Microwave Conference, APMC 2024 |
|---|---|
| Country/Territory | Indonesia |
| City | Bali |
| Period | 17/11/2024 → 20/11/2024 |
| Sponsor | IEEE MTT Society |
| Series | IEEE Asia-Pacific Microwave Conference (APMC) |
|---|---|
| ISSN | 2690-3946 |
Bibliographical note
Publisher Copyright:© 2024 IEEE.
Keywords
- Beam-Scanning
- Circular polarization
- Dual-Band
- Liquid Crystal
- Reflectarray
- Satcom