Ultra-wideband Circularly Polarized Planar Array Antenna Using Single-Arm-Spiral Elements and Dielectric-based IMGW
Paper in proceedings, 2019

An ultra-wideband circularly polarized (CP) planar array antenna is proposed in this paper. Using the concept of tightly coupled array antenna, the single-arm spiral element obtains good impedance matching and axial ratio (AR) characteristics in an ultra-wide frequency range. The new single-arm spiral element has a single-arm feeding structure which can be easily connected with the feeding network throughout a via. The feeding network is achieved by using dielectric-based inverted microstrip gap waveguide (IMGW) technology. An 8 × 8 CP planar array is designed. The simulated results show that the proposed array achieves a relative impedance bandwidth of 52.8% from 17.87 to 30.7 GHz and 3-dB axial ratio bandwidth of 49.2% from 18.6 to 30.75 GHz.

circularly polarized

dielectric-based IMGW.

ultra-wideband

planar array antenna

Author

Tianling Zhang

Xidian University

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Lei Chen

Xidian University

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Sadegh Mansouri Moghaddam

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Jian Yang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings

8963492

2019 International Symposium on Antennas and Propagation, ISAP 2019
Xian, China,

Subject Categories

Telecommunications

Communication Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering

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7/16/2020