A Novel Active Frequency Selective Surface With Wideband Tuning Range for EMC Purpose

Author

Zhang, Liang ; Yang, Guohui ; Wu, Qun ; Hua, Jun

Author_Institution

Sch. of Electron. & Inf. Eng., Harbin Inst. of Technol., Harbin, China

Volume

48

Issue

11

fYear

2012

Firstpage

4534

Lastpage

4537

Abstract

A novel symmetric anchor-shaped active frequency selective surface (AFSS) with a wide tuning frequency range is proposed. Varactor diodes are used as the active tuning components at the center of each AFSS unit. The equivalent circuit model of the AFSS unit is extracted. SPICE-based circuit simulation and full-wave simulation are compared to predict the resonant frequency. A wide tunable frequency range from 1.76 to 2.45 GHz with a relative bandwidth of 33% is achieved. A prototype of AFSS is fabricated and tested. The measurement result is consistent with the simulation. The design has low power consumption and is potentially used for selectively shielding or reusing of GSM, TD-SCDMA, or Wi-Fi spectrums.

Keywords

cellular radio; code division multiple access; electromagnetic compatibility; frequency selective surfaces; space division multiple access; varactors; wireless LAN; AFSS unit; EMC purpose; GSM; SPICE-based circuit simulation; TD-SCDMA; Wi-Fi spectrums; active frequency selective surface; equivalent circuit model; frequency 1.76 GHz to 2.45 GHz; full-wave simulation; relative bandwidth; resonant frequency; symmetric anchor-shaped active frequency selective surface; varactor diodes; wide tunable frequency; wideband tuning range; Bandwidth; Equivalent circuits; Frequency selective surfaces; Integrated circuit modeling; Resonant frequency; Tuning; Varactors; Active frequency selective surface (AFSS); equivalent circuit; varactor; wide tuning range;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2202099

Filename

6333040