| Design of Power Dividers for Finite Dipole Subarrays with Complex Impedances |
Seongjung Kim 
, Sangwook Nam
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School of Electrical and Computer Engineering, Seoul National University, Seoul, Korea |
Correspondence:
Sangwook Nam,Email: snam@snu.ac.kr
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Received: 15 October 2023 • Revised: 31 December 2023 • Accepted: 2 February 2024 |
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| Abstract |
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In this study, we propose a method for designing a feeding network for all port-matched and high gain dipole subarray antennas excited by uniform current mode (UCM) by considering the mutual coupling effect. By analyzing the array impedance matrix, we first calculated the active input impedance and the required excitation power. Following this, we transformed and combined the complex impedances using the proposed power divider, thus preserving the required excitation power. The design process and results of this study are demonstrated stepwise through circuit simulation. Subsequently, we fabricated and evaluated the proposed subarrays. The impedance matching performance of the UCM was found to be better than that of the conventional subarray, with their array gains being 11.5 dBi and 9.8 dBi, respectively. |
| Key words:
Dipole Antenna, Feeding Network, Finite Array, Gain Maximization, Impedance Matching, Power Divider, Subarray |
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