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Microstrip Antennas

Microstrip Antennas

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It was known that the resonant length of a rectangular microstrip antenna is approximately one-half wavelength with the effective dielectric constant of the substrate taken into account. Following the introduction of the microstrip antenna, analysis methods were desired to determine the approximate resonant resistance of a basic rectangular microstrip radiator. The earliest useful model introduced to provide approximate values of resistance at the edge of a microstrip antenna is known as the transmission line model, introduced by Munson. The transmission line model provides insight into the simplest microstrip antenna design, but is not complete enough to be useful when more than one resonant mode is present. In the late 1970s Lo et al. developed a model of the rectangular microstrip antenna as a lossy resonant cavity. Microstrip antennas, despite their simple geometry, proved to be very challenging to analyze using exact methods. In the 1980s, the method of moments (MoM) became the first numerical analysis method that was computationally efficient enough so that contemporary computers could provide enough memory and CPU speed to practically analyze microstrip antennas.

Chapter Contents:

  • 1.1 The Origin of Microstrip Radiators
  • 1.2 Microstrip Antenna Analysis Methods
  • 1.3 Microstrip Antenna Advantages and Disadvantages
  • 1.4 Microstrip Antenna Applications
  • References

Inspec keywords: microstrip antennas; method of moments

Other keywords: resonant resistance approximation; rectangular microstrip radiator; dielectric constant; numerical analysis method; microstrip antenna design; method of moments; rectangular microstrip antenna; transmission line model

Subjects: Other numerical methods; Single antennas

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