Title :
Varactor-tunable frequency selective surface with resistive-lumped-element biasing grids
Author_Institution :
Sch. of Eng., Univ. of Warwick, Coventry, UK
Abstract :
A novel tunable frequency selective surface (FSS) is presented consisting of vertically and horizontally positioned convoluted dipole FSS elements. Each of the latter incorporates a varactor diode, which is biased via novel resistive-lumped-element biasing grids that suppress undesirable resonances and improve the filter´s low-pass response. The proposed design is shown, numerically and experimentally, to perform well. It is expected that this letter will assist research work in low-cost, large-scale tunable FSS.
Keywords :
dipole antenna arrays; frequency selective surfaces; low-pass filters; lumped parameter networks; varactors; low-pass response filter; positioned convoluted dipole FSS; resistive-lumped-element biasing grid; varactor diode; varactor-tunable frequency selective surface; Diodes; Electromagnetics; Fabrication; Filters; Frequency selective surfaces; Large-scale systems; Resistors; Resonance; Tunable circuits and devices; Varactors; Frequency selective surface (FSS);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.855372
