Design of A Single Antenna With Tunable In-Band RCS Null Through Load Impedance Control
| Autor: | Zhang, Binchao, Hu, Weidong, Yang, Fan, Xu, Shenheng, Li, Maokun |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Reducing the in-band and co-polarization radar cross section (RCS) of antennas has been a widely concerned problem. However, most of works focus on RCS reduction of antenna arrays, and there are few studies for a single antenna. Therefore, this letter presents a method to control the null of the in-band RCS by changing the load impedance of the antenna, so as to effectively reduce the RCS at particular directions. First, the relationship between the null position and the load impedance is calculated by analyzing the in-band scattering field of the antenna. Second, the load impedance of the traditional patch antenna is controlled by cascading an open-circuit stub of different lengths on the feeding line. Then, the null tunning of the in-band RCS is realized. Simulated and measured results show that the designed patch antenna can tune the null of in-band RCS from 0{\deg} to 60{\deg}. Thus, the in-band RCS is effectively reduced under the premise that the radiation performance is basically unchanged. Comment: This article has been submitted to IEEE Antennas and Wireless Propagation Letters |
| Databáze: | arXiv |
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