✦ LIBER ✦
Broadband circularly polarized aperture-coupled microstrip antenna mounted in a 2.45 GHz wireless communication system
✍ Scribed by Hua-Ming Chen; Yi-Fang Lin; Tzung-Wern Chiou
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 168 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
A no¨el dual-feeding technique for a broadband circularly polarized aperture-coupled microstrip antenna operating in a 2.45 GHz system is presented. The dual feeds are placed in orthogonal directions, and are connected to a Wilkinson power di¨ider with a 90Њ phase shift between its two output feedlines. Proper positioning of the coupling slots ( ) results in high port solution ) 40 dB , and a purity of circular polariza-( ) tion is obtained. A broad impedance bandwidth VSWR F 2 of about 54.7% and a 1 dB axial-ratio bandwidth of about 9.8% were achie¨ed.