## Abstract In this article, a new slot antenna with a quasiβspiral slot is proposed.A simple microstrip line feed is used to excite the slot antenna. Measurement results show that 10 dB return loss bandwidth and 3 dB axial ratio bandwidth of the proposed antenna are 87 and 43%, respectively. Β© 201
Small Circularly Polarized U-Slot Wideband Patch Antenna
β Scribed by Ka Yan Lam, ; Kwai-Man Luk, ; Kai Fong Lee, ; Hang Wong, ; Kung Bo Ng,
- Book ID
- 118253261
- Publisher
- IEEE
- Year
- 2011
- Tongue
- English
- Weight
- 394 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1536-1225
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π SIMILAR VOLUMES
## Abstract Wideband circular polarization with a boresight axial ratio of β€ 2.2 dB is achieved over 35% of bandwidth by sequential rotation of linearly polarized radial stubβfed slot elements (2 Γ 2 array). The effect of the feed interactions upon the antenna radiation pattern is also analysed. Th
The contrawound toroidal helix antenna with constant current is examined; it has an omnidirectional pattern in the toroid plane. Radiation resistance is deri¨ed for the dipole mode, and results are ¨alidated by moment-method calculations. The radiation Qs of these antennas are greater than one milli