Microstrip Antenna Pattern Reconfiguration Using On-Chip Parasitic Elements

On-body Antenna with Parasitic Elements

An Efficient Electromagnetic Study of Circular Disc Microstrip Antenna with Two Parasitic Elements

In this paper, a rigorous analysis of three stacked circular microstrip patches is performed using a dyadic Green’s functions formulation. The circular discs are embedded in a multilayered substrate containing isotropic and/or uniaxial anisotropic materials. A very efficient technique to derive the dyadic Green’s functions of the stacked configuration in the vector Hankel transform domain is pr...

Microstrip Antenna Gain Enhancement using Near Zero Refractive Index Metamaterials

Some useful features of microstrip patch antennas are low profile, low weight and easy fabrication. However this type of antenna suffers from having a low gain, caused by propagation surface waves. In this paper, a new near zero refractive index metamaterial (MTM) unit cell is designed and fabricated as a superstrate over a Rectangular Microstrip Patch Antennas (RMPA). In order to obtain a maxi...

Studies on Microwave Antennas: Passive Intermodulation Distortion in Antenna Structures and Design of Microstrip Antenna Elements

Passive intermodulation (PIM) measurements of antennas and the design of dual-polarised microstrip antenna elements are investigated in this thesis. The emphasis is on the development of a passive intermodulation source localisation method and on the studies of the PIM source behaviour under various impedance loading conditions. Passive intermodulation distortion can be harmful in wireless comm...

Design of a Compact Microstrip Antenna using Capacitive Feed and Parasitic Patch for Ultra-Wideband Application

This paper proposes a novel approach to reduce size and increase the impedance bandwidth of microstrip UWB (Ultra-Wideband) antenna, when using a thick substrate, so that it can be used for WPAN application, especially for mobile and portable devices.The application of gap-coupled capacitive feeding mechanism for achieving UWB with microstrip antenna has also been proposed.. The proposed antenn...