AUTHORS: Yumi Takizawa, Atsushi Fukasawa
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ABSTRACT: This paper presents a microwave circular polarization plane antenna. Plane antenna provides a compact antenna, but the circular polarization roundness was not enough and narrow band. S-type routing wires and grounded collar are newly given in this paper. The former provides circuits minimizing reflection points in routing wires which contributes perfect roundness in wideband. The latter eliminates power in horizontal plane and enhances the power along vertical axis. High performance 64-antenna array was presented in this paper. Almost perfect roundness (axial ratio less than 3dB) was realized by reducing power reflections in routing wires. And directive gain 24dB, which is 3 dB enhanced by the grounded square collar, are obtained. The number of antennas 64 in an array was reduced into a half or less of conventional number 128.
KEYWORDS: - Circular polarization plane antenna, horizontal radiation, S-type routing wire, Grounded square collar.
REFERENCES:
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[2] Sumantyo Josaphat T. S., Dual-band singly-fed proximity-coupled trip-truncated triangular path array for land vehicle mobile system, Makara Journal of Technology, 19/3, pp.141- 147, 2015.
[3] Takizawa Y., Fukasawa A., Microwave Patch Antenna with Circular Polarization for Environmental Measurement, Journal of Electromagnetics, vol. 2, pp.1-6, June 27, 2017.
[4] Fukasawa A., Takizawa Y., Circular Polarization Array Antenna with Orthogonal Arrangement and Parallel Feeding by Simplified Routing Wires, WSEAS Conference in IMCAS’18, Paris, France, Apr. 13, 2018.
[5] Takizawa Y., Fukasawa A., Novel Structure and the Characteristics of a Microwave Circular Polarization Antenna, WSEAS Transaction on Communications, vol. 16, pp. 184-191, 2017.
[6] Fukasawa A., Takizawa Y., Circular Polarization Array Antenna with Orthogonal Arrangement and Parallel Feeding by Simplified Routing Wires, Journal of Electromagnetics, vol. 3, pp. 3-8, Apr. 11, 2018.
[7] Takizawa Y., Fukasawa A., Circular Polarization Array Antenna with Orthogonal Arrangement and Parallel Feeding by Smoothed Routing Wires, Journal of Electromagnetics, vol. 3, pp. 14-19, Apr. 11, 2018.
[8] Takizawa Y., Fukasawa A., 16-Antenna Array for Circular Polarization with Wideband Axial Ratio and Enhanced Directivity, Journal of Electromagnetics, vol. 3, pp. 20-26, Oct. 26, 2018.
[9] Takizawa Y., Fukasawa A., Circular Polarization Plane Antenna Array by AntiParallel Arrangement with Simplified Routing Wire, Journal of Electromagnetics, vol. 3, pp. 27-32, Oct. 26, 2018.
[10] Takizawa Y., Fukasawa A., Simplified Routing Wire for Anti-Parallel Configuration Applied to Circular Polarization 16-Antenna Array, International Conference on Circuits, Systems, Signal and Telecommunications (CSST '19), # 76401-103, Madrid, Spain, Jan. 19-21, 2019.
[11] Fukasawa A., Takizawa Y., Circular Polarization 16-Antenna Array with Smoothed Routing Wires and Grounded Square Collar, International Conference on Circuits, Systems, Signal and Telecommunications (CSST '19), # 76401-103, Madrid, Spain, Jan. 19-21, 2019.
