Microstrip Antenna Array Design
In this experiment a log periodic antenna array will be analysed and designed.
Introduction
Microstrip antennas that operate as a single element usually have a relatively large half power beamwidth, low gain and low radiation efficiency. In order to improve on these parameters, microstrip antennas are used in array configurations to improve the gain and range of the radiating structure.
There are many effects such as mutual coupling between elements which must be taken into consideration when analysing array structure. As a result full wave analyses are usually used to model arrays.
The log periodic antenna structure consists is similar to a proximity coupled antenna, however the elements are designed such that they are a log size and spacing apart. These structures have relatively broad bandwidth, some in the order of 40%