A NOVEL BANDWIDTH ENHANCEMENT TECHNIQUE FOR X-BAND RF MEMS ACTUATED RECONFIGURABLE REFLECTARRAY

Optically reconfigurable unit cell for Ka-band reflectarray antennas

X-band RF MEMS tuned combline filter - Electronics Letters

Introduction: Microwave filters are critical components for electronic warfare, radar, and communications systems, but typical tunable filters are bulky, expensive, and consume large amounts of power. Radio frequency microelectromechanical systems (RF MEMS) technology provides the possibility of low-loss, high linearity filtering in volumes comparable to those of integrated circuits [1]. The ma...

Design and Implementation of Reconfigurable Reflectarray Element using MEMS Technology

This paper presents the design and implementation of a reconfigurable reflectarray element design using commercially available RF MEMS switches. This reconfigurablity allows for dynamic control of individual radiating elements by electronically manipulating the switch configuration. The reflectarray element chosen here consists of a microstrip patch on the top surface with a slot in the ground ...

Analysis of Single Square Ring Reflectarray Element for Bandwidth Enhancement

An analysis of phase variation and phase range of single square ring element for broadband reflectarray antenna is presented in this paper. The analysis and design of reflectarray antenna element is presented based on variable size of the square ring element parameter a t X-band and Ka-band. The design procedure and critical parameters are also discussed. Modifying the current distribution of s...

Novel Triple Band Helical Antenna for Gain and Bandwidth Enhancement

In this paper a design of triple band one turn helical antenna without ground plain for center frequency of 2.4 GHz, 3.6 GHz, and 5.4 GHz is discuss. These frequencies are selected such that the antenna radiate for continuous band of 2 GHz to 6.8 GHz frequency with variable gain. The purpose of this novel design is to enhance the gain as well as bandwidth. The triple band is achieved by three c...