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Design of a Broadband Switchable Active Frequency Selective Surfaces Based on Modified Diode Model.
- Source :
- IEEE Antennas & Wireless Propagation Letters; Jul2022, Vol. 21 Issue 7, p1378-1382, 5p
- Publication Year :
- 2022
-
Abstract
- In this letter, a broadband switchable active frequency selective surfaces (AFSSs) is presented, and the proposed structure is comprised of three metallic layers and two Rogers RT5880 substrates. In order to realize broadband transmission, a second-order bandpass filter is constructed, and the multilayer coupling effect is utilized. A modified equivalent circuit model of the p-i-n diode is proposed to reduce the simulation error and improve the design accuracy. By controlling the bias voltage of the p-i-n diodes, two completely different functions are realized. At the function of dual-polarized shielding, the shielding bandwidth is 2–18 GHz, and the transmission bandwidth is 8.2–10.5 GHz with a fractional bandwidth of 24.6% at the function of dual-polarized transmission. A prototype has been fabricated and measured, and the measurement results are in good agreement with the simulation results, indicating that the AFSSs has good polarization stability for X-band radar applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15361225
- Volume :
- 21
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- IEEE Antennas & Wireless Propagation Letters
- Publication Type :
- Academic Journal
- Accession number :
- 157841002
- Full Text :
- https://doi.org/10.1109/LAWP.2022.3168983