A single layer stub-patch phoenix cell for large band reflectarrays

Abstract

To cite this version:Hassan Salti, Raphaël Gillard. A single layer stub-patch phoenix cell for large band reflectarrays. Abstract-A novel Phoenix cell for large band reflectarray antennas is presented here. The cell starts with a simple square patch whose phase shift is controlled by its sides' length. The size of the patch is then fixed and open-stubs with variable length are connected to it. To complete the phase range at the central frequency, the stub-loaded patch then shrinks gradually until it disappears completely allowing the cell to rebirth. The cell is characterized by a phase range of 360˚ at the central frequency, linear phase responses with respect to frequency and a reduced phase dispersion of less than 34˚/GHz within a 40% bandwidth. The suggested cell retains the same bandwidth when accounting for incidence angles of up to 30˚ and a reduced bandwidth of 32% accounting for higher incidence angles of up to 45˚.Index Terms-reflectarray, large band, Phoenix.

Spherical Mapping of the Second-Order Phoenix Cell for Unbounded Direct Reflectarray Copolar Optimization

“…This so-called rebirth capability theoretically enables designing RA with smooth geometrical variations on the reflecting panel. The concept of Phoenix cells has been proposed originally in [26] and different possible geometries have then been studied such as [28,29]. A new step has been passed in [27] where two different geometries, one capacitive and the other inductive, are combined successively to form the Phoenix cycle.…”

A Statistical Approach for Gain Bandwidth Prediction of Phoenix-Cell Based Reflect arrays

“…This phase response fits well with the ideal model used to derive (18), although the linearity is not perfect. The second cell, the Stub-Patch Phoenix cell was introduced recently in [1]. It improves the bandwidth further due to the three possible operating modes it offers: a patch mode, a stub mode, and a combined patch-stub mode.…”

“…This paper is an extension of work originally presented in the 11th European Conference on Antennas and Propagation (EuCAP) where a novel single layer stub-patch Phoenix cell is suggested as a broadband and easy solution to fabricate reflectarray (RA) elements [1].…”