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Conference Paper
Design and Analysis of an S-Band Energy-Selective Antenna Array Using PIN Diodes for High-Power Microwave Protection
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- Authors
- Rana Biswarup, Jong Hwa Kwon, Ic-Pyo Hong
- Issue Date
- 2026-04
- Citation
- European Conference on Antennas and Propagation (EuCAP) 2026, pp.1-4
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, a novel concept of an energy selective antenna array (ESAA) operating at the S-band is proposed. First, an S-band power divider was designed, followed by a 1×4 microstrip antenna array. PIN diodes were then integrated on each microstrip patch and near the feed line to form the ESAA, enabling protection against high-power microwave (HPM) signals by blocking them from reaching other system components. The proposed ESAA exhibited a gain of 10.3 dBi under normal conditions, while the gain dropped to −10.9 dBi in the presence of HPM at the broadside direction. An isolation level of 21.2 dB was achieved between the “On” and “Off” states of the PIN diodes. By controlling the surface current distributions through the PIN diodes, the TM01 mode was disrupted, leading to the energy-selective behavior of the proposed array.
- Keyword
- Energy selective antenna array (ESAA), microstrip, high power microwave (HPM), power divider
- KSP Keywords
- Band Power, Band energy, Feed line, High power microwave, Microstrip antenna array, PIN Diode, S-Band, design and analysis, isolation level, microstrip patch, power divider