Miniaturised Frequency Selective Surface

This paper presents a method for designing a Frequency Selective Surface (FSS) using a miniaturised unit cell based on a simple lumped circuit analogue. The paper presents the theory underpinning the technique with a single polarisation method, followed by a dual polarised design. This manufactured FSS has a unit cell size of λ/15 and a measured -3dB bandwidth of 60%, operating at 3GHz. The paper shows how an FSS with a unit cell size of λ/22 can be achieved, operating around 500MHz. The paper shows full field simulations of the structures.