Broadband Single-Layer Reflectarray Antenna Employing Circular Ring Elements Dented With Sectorial Slits

Ring Shaped Compact Microstrip Reflectarray Antenna

Regularly shaped compact microstrip antennas have a small size but their gain is insufficient for most applications. Therefore, a ring-shaped compact microstrip reflectarray with microstrip antenna feed has been proposed. Different configurations, namely, 1 × 3, 3 × 1, plus-shaped and 3 × 3 have been analyzed. The 3 × 3 configuration yields an optimum gain of 10. 8 dBi and a narrow beamwidth of...

A Novel Dual-ring Multi-layer Circular Polarized Antenna

A novel circular polarized antenna structure capable of high radiation efficiency, and suitable for use in multilayer microwave circuits is presented. The antenna uses dual ring feed system to enhance radiation. Data is provided for a prototype antenna working at 10GHz.

Single-Layer Dual-Band Dual-Linear-Polarization Reflectarray Antenna with Different Beams for Each Band

A novel single-layer unit cell structure is proposed to design a dual-band dual-linearpolarization reflectarray antenna with different beams for X and Ku bands. The unit cell structure is composed of a circular ring and two cross bow-tie structures combined by a circular patch. Five tunable geometric parameters can be optimized to achieve the required phase distributions of the reflectarray ant...

Single-Layer Multi-band Circularly Polarized Reflectarray Antenna: Concept, Design, and Measurement

This paper presents a single layer multi-band reflectarray antenna with circular polarization. The antenna geometry and operation principles are described. The reflectarray design procedure, including antenna elements and offset feed, is illustrated in details. An X band reflectarray prototype is fabricated and measured in the near field system, which realizes a 30.4 dB gain, 53.7% efficiency, ...

Broadband Annular-Ring Dielectric Resonator Antenna