Inverted suspended space fed microstrip antenna for wireless applications
Summary :
Table of Contents
- Introduction
- Analysis model
- Analysis and results on infinite ground plane
- Analysis and results on finite ground plane and finite substrate
- Conclusion
- References
Abstract
The basic microstrip antenna (MSA) is a resonant patch of metal, etched on the surface of grounded
dielectric slab. The dielectric material is replaced with air to improve the bandwidth and to minimize
losses. The proposed space fed microstrip antenna (MSA) consists of fed patch and parasitic patch
separated by 0.5 λ0 to enhance the gain. The parasitic patch is printed on bottom side (inverted suspended configuration) of low cost FR4 substrate with dielectric constant 4.4 and loss tangent 0.02 respectively. The antenna is excited with coaxial probe feed using N type connector from the fed patch. The radiation from fed patch is intercepted electromagnetically by parasitic patch and it reconfigures the radiation and reradiates. The cavity formed between fed and parasitic patch maximizes field and enhances gain. This depends upon the spacing between fed and parasitic patch.
Key Words: microstrip antenna; patch antenna; stacked antenna; ISM band
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