A Study On Microstrip Antenna

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Chapter 3

Overview of Microstrip Antenna

3.1 Microstrip Antenna A microstrip antenna consists of conducting patch and a ground plane separated by dielectric substrate. This concept was undeveloped until the revolution in electronic circuit miniaturization and large-scale integration in 1970. The early work of Munson on microstrip antennas for use as a low profile flush mounted antennas on rockets and missiles showed that this was a practical concept for use in many antenna system problems. Various mathematical models were developed for this antenna and its applications were extended to many other fields. The number of papers, articles published in the journals for the last ten years. The microstrip antennas are the present day antenna designer,s choice. Low dielectric constant substrates are generally preferred for maximum radiation. The conducting patch can take any shape but rectangular and circular configurations are the most commonly used configuration. A microstrip antenna is characterized by its length, width, input impedance, gain and radiation patterns. Various parameters, related calculation and feeding technique will be discussed further through this chapter. The length of the antenna is about half wavelength of its operational frequency. The length of the patch is very critical and important that result to the frequency radiated. Antennas are key components of any wireless communication system and it
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