Ultra-wideband Planar Spiral Antenna
- Resource Type
- Conference
- Authors
- Zhang, Qin; Xu, Yunxue; Wang, Chengrui; Gan, Chuanhuizi; Wang, Jiayi; Shi, Zechao
- Source
- 2023 IEEE 11th Asia-Pacific Conference on Antennas and Propagation (APCAP) Antennas and Propagation (APCAP), 2023 IEEE 11th Asia-Pacific Conference on. volume1:1-2 Nov, 2023
- Subject
- Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Polarization
Spirals
Baluns
Simulation
Microstrip antennas
Voltage
Ultra wideband antennas
- Language
By introducing an equiangular spiral structure at the starting end of the Archimedes spiral, the input impedance of the antenna is reduced and the working bandwidth of the antenna is widened. Simultaneously, a curved spiral structure similar to a cosine wave is used to further reduce the dimensions of the antenna. The presented planar spiral antenna has a diameter of 94mm with a balun height of 18mm. In 1.2-12GHz the voltage standing wave ratio (VSWR) $\lt 2.$ And the axial ratio (AR) $\lt 3$ dB in 1.21-9.5GHz, and the peak gain range of right-handed circular polarization is between 2.5 and 4.9dB.