Semi-Automatic Design of Dual-Band End-Fed Antennas for Digital Antenna Arrays

Introduction. The topic of implementing a dual-band mode of operation for director dipole antennas is represented by a wide range of works, almost all of which are dedicated to studying the properties of a classic dipole. However, the issue of end excitation of radiators for dual-band director antennas remains open. The development of such radiators requires a deep analysis both from the point of view of developing mathematical and electrodynamics models, which corresponds to the tactical and technical requirements of modern digital antenna arrays.

Aim. To substantiate a procedure for determining the initial appearance of a dual-band antenna exciter from the standpoint of the systems approach to the design of antenna elements and nodes. This procedure is suitable for a semi-automated design of more complex antenna systems.

Materials and methods. As part of the research, the input impedance of a dual-band system consisting of two active radiators and two passive directors was determined using the method of induced electromotive forces (EMF). Models of dual-band director radiators were developed using the CST Studio Suite 2021 full-wave electromagnetic simulation.

Results. The results of developing procedures for a semi-automatic design of antennas with a dual-band function of input impedance are presented. Following a comparative analysis, approaches to implementing the printed layout of an antenna comprising standard radio engineering components, which imply serial production, are proposed.

Conclusion. The proposed models can be used when designing director, turnstile, and cardioid antennas, as well as antenna arrays. These designs are analogous to antennas based on a classic central excited dipole.

1. Xi Li, Lin Yang, Shu-Xi Gong, Yan-Jiong Yang. Dual-Band and Wideband Design of a Printed Dipole Antenna Integrated with Dual-Band Balun. Progress In Electromagnetics Research Letters. 2009, vol. 6, pp. 165-174. doi: 10.2528/PIERL08120504

2. Son Xuat Ta, Ikmo Park, Chien Dao-Ngoc. A Hybrid of T-Dipole and QuasiYagi Antenna for Dual-band WLAN Access Point. REV J. on Electronics and Communications. 2012, vol. 2, no. 1-2, pp. 63-67. doi: 10.21553/rev-jec.37

3. Avila-Navarro E., Cayuelas C., Reig C. Dual-Band Printed Dipole Antenna for Wi-Fi 802.11 N Applications. Electronics letters. 2010, vol. 46, no. 21, pp. 1421-1422. doi: 10.1049/el.2010.2000

4. Balanis C. A. Antenna Theory. Analysis and Design. 4th Ed. NJ, Hoboken, John Wiley & Sons Inc., 2016, 1072 p.

5. Pocklington H. C. Electrical Oscillations in Wires. Proc. Cambridge Phil. Soc. 1897, vol. 9, pp. 324-332.

6. King R., Wu T. Currents, Charges, and Near Fields of Cylindrical Receiving and Scattering Antennas. IEEE Transactions on Antennas and Propagation. 1965, vol. 13, no. 6, pp. 978-979. doi: 10.1109/TAP.1965.1138563

7. Wu D., Chen X., Yang L., Fu G., Shi X. Com-pact and Low-Profile Omnidirectional Circularly Polarized Antenna with Four Coupling Arcs for UAV Applications. IEEE Antennas and Wireless Propagation Letters. 2017, vol. 16, pp. 2919-2922. doi: 10.1109/LAWP.2017.2752358

8. Yu D., Gong S. X., Wan Y. T., Yao Y. L., Xu Y. X., Wang F. W. Wideband Omnidirectional Circularly Polarized Patch Antenna Based on Vortex Slots and Shorting Vias. IEEE Transactions on Antennas and Propagation. 2014, vol. 62, no. 8, pp. 3970-3977. doi: 10.1109/TAP.2014.2325961

9. Zhang C., Li L., Zhang R., Yu Shao, Feng Lin. A Single-Microstrip-Fed S-Shaped Magneto-Electric Dipole Array with Broadband Circular Polarisation for MMW Applications. IET Microwaves, Antennas & Propagation. 2021, vol. 15 (14), pp. 1743-1753. doi: 10.1049/mia2.12185

10. Malek N., Karsin S., Mohamad S., Mohd Isa F., Asnawi A., Ramly A. M. Design of a Dual Band Printed Dipole Antenna for WIFI Application. J. of Telecommunication, Electronic and Computer Engineering (JTEC). 2017, vol. 9 (4), pp. 63-68.

11. Xiong Zhi Zhu, Jin Ling Zhang, Tong Cui, Zhan Qi Zheng. A Dual-Broadband Printed Dipole Antenna for 2G/3G/4G Base Station Applications. Intern. J. of Antennas and Propagation. 2019, vol. 2019, 7 p. doi: 10.1155/2019/4345819

12. Alekseytsev S. A., Gorbachev A. P. The Novel Printed Dual-Band Quasi-Yagi Antenna with End-Fed Dipole-Like Driver. IEEE Transactions on Antennas and Propagation. 2020, vol. 68, no. 5, pp. 4088-4090. doi: 10.1109/TAP.2019.2950837

13. Zhang H., Xin H. A Dual-Band Dipole Antenna With Integrated-Balun. IEEE Transactions on Antennas and Propagation. 2009, vol. 57, no. 3, pp. 786-789. doi: 10.1109/TAP.2009.2013440

14. Bialkowski M. E., Abbosh A. M. Design of a Compact UWB Out-Of-Phase Power Divider. IEEE Microwave and Wireless Components Letters. 2007, vol. 17 (4), pp. 289-291. doi: 10.1109/LMWC.2007.892979

15. Abbosh M., Bialkowski M. E., Mazierska J. An UWB Planar Out-Of-Phase Power Divider Employing Microstrip-Slot and Parallel Stripline-Microstrip Transitions. Asia-Pacific Microwave Conf., Yokohama, Japan, 2006, pp. 905-908. doi: 10.1109/APMC.2006.4429559