01-06-2013, 03:25 PM
DESIGN, SIMULATION, FABRICATION & TESTING OF MICROSTRIP PATCH ANTENNA
DESIGN, SIMULATION,.pptx (Size: 882.3 KB / Downloads: 24)
Problem Definition
To design, simulate, fabricate and test a rectangular microstrip patch antenna that radiates at 2.4 GHz.
Objectives
Design and simulate the working of the model using FEKO electromagnetic wave simulation software.
Observe the simulated results and compare it with theoretical values.
What is an Antenna?
An antenna is a specialized transducer that converts radio frequency fields into alternating current, or vice versa.
What is a Microstrip Antenna?
Microstrip antennas are planar resonant cavities that leak from their edges and radiate.
It consists of a flat “patch” of metal, mounted over a larger sheet of metal called a “ground plane”.
A patch antenna is usually constructed on a dielectric substrate, using the same materials and lithography processes used to make PCBs.
Why Use Patch Antennas?
Light weight and low volume.
Low profile planar configuration which can be easily made conformal to host surface.
Low fabrication cost, hence can be manufactured in large quantities.
Supports both, linear as well as circular polarization.
Can be easily integrated with microwave integrated circuits (MICs).
Mechanically robust when mounted on rigid surfaces.
Easy to form curved surfaces (as long as the curve is in one direction only).
Easy to form a large array, spaced at half-wavelength or less.
Limitations of Patch Antennas
Narrow bandwidth
Low efficiency
Low Gain
Extraneous radiation from feeds and junctions
Low power handling capacity.
Surface wave excitation
Future Plans
Fabricate the model that gives best performance results.
Testing the fabricated antenna to verify the simulated results.
To configure the same antenna in transmitting and receiving mode.
Hopefully include the antenna in a suitable device application.