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Swapnil Bangera
Swapnil Bangera

The document discusses the effect of dimensions and position of a single shorting post on a rectangular microstrip patch antenna (RMSA). It shows that decreasing the width of the RMSA decreases its resonance frequency but increasing the substrate dielectric constant and placing the shorting post at a corner also decreases the resonance frequency, allowing for a more compact design. In conclusion, shorting posts can significantly reduce the size of microstrip antennas and positioning the post at a corner reduces the size further.

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EFFECT OF DIMENSIONS OF RMSA WITH A SINGLE SHORTING POST & EFFECT OF THE POSITION OF THE SINGLE SHORTING POST SWAPNIL BANGERA ADVANCED ANTENNA & ARRAYS ME-EXTC
OVERVIEW MICROSTRIP ANTENNA (MSA) SHORTING EFFECT OF DIMENSIONS EFFECT OF POSITION CONCLUSION
MICROSTRIP ANTENNA IN WIRELESS COMMUNICATION, ANTENNAS ARE KEY COMPONENTS. THEY MUST BE SMALL, LOW PROFILE WITH MINIMAL PROCESSING COSTS. LOW EFFICIENCY AND NARROW BANDWIDTH. THE FLEXIBILITY AFFORDED BY MICROSTRIP ANTENNA TECHNOLOGY HAS LED TO A WIDE VARIETY OF DESIGN AND TECHNIQUES. THE BANDWIDTH OF THE MICROSTRIP ANTENNA CAN BE INCREASED USING VARIOUS TECHNIQUES.
SHORTING THE OPERATING FREQUENCY OF MSA IS HIGHLY DEPENDENT ON ITS DIMENSIONS. FOR LOWER FREQUENCIES THE SIZE OF THE CONVENTIONAL MSAS IS LARGE. A COMMON TECHNIQUE TO REDUCE THE OVERALL SIZE OF A MICROSTRIP PATCH ANTENNA IS SHORTING. SHORTING IS DONE BY TERMINATING ONE OF THE RADIATING EDGES WITH A SHORT CIRCUIT. THE SHORT CIRCUIT CAN BE IN THE FORM OF A METAL CLAMP OR A PIN.
SHORTING
EFFECT OF DIMENSION CONSIDER A RECTANGULAR RMSA WITH A SINGLE SHORTING POST IN THE MIDDLE OF THE EDGE ALONG THE WIDTH. THE LENGTH (L=3.3) IS FIXED AND THE WIDTH (W) IS VARIED. THE DIAMETER OF THE SHORTING POST IS 0.06.
Shorting post
Width(cm) X(cm) f(Ghz) VSWR BW % 0.5 0.40 2.178 1.14 2.1 1.0 0.20 1.688 1.29 1.2 1.5 0.13 1.392 1.22 0.9 2.0 0.10 1.196 1.08 0.8 2.5 0.10 1.054 1.34 0.7 3.0 0.08 0.946 1.21 0.6 3.5 0.08 0.860 1.25 0.6 4 0.08 0.790 1.35 0.5 = 3 4( + 2 )
EFFECT OF POSITION WHEN THE SINGLE SHORTED RMSA IS FABRICATED ON A HIGHER DIELECTRIC CONSTANT SUBSTRATE, ITS RESONANCE FREQUENCY REDUCES. THE RESONANCE FREQUENCY REDUCES FURTHER WHEN THE SHORTING POST IS PLACED AT ONE CORNER OF THE RMSA. VOLTAGE DISTRIBUTION VARIES FROM ZERO AT THE SHORT LOCATION TO A MAXIMUM VALUE AT THE DIAGONALLY OPPOSITE CORNER.
Shorting post
W(cm) L(cm) x(cm) f(Mhz) BW % 3.0 6.5 0.16 434 1.15 4.0 6.0 0.16 427 1.21 5.0 5.5 0.16 423 1.23 6.0 5.0 0.23 423 1.23 7.0 4.5 0.26 423 1.24 8.0 4.0 0.33 423 1.26 A SINGLE SHORT AT THE CORNER OF THE RMSA RESULTS IN A MOST COMPACT CONFIGURA
CONCLUSION A REVIEW OF SHORTING POST LOADED MICROSTRIP ANTENNA AS WELL AS NEED OF THE SHORTING POST LOADED MICROSTRIP ANTENNA IS PRESENTED. THE SIZE OF THE MICROSTRIP PATCH CAN BE REDUCED SIGNIFICANTLY BY SHORTING POST. THE SIZE CAN BE REDUCED FURTHER BY POSITIONING THE SHORTING POST AT THE CORNER OF THE EDGE OF MICROSTRIP ANTENNA.
THANK YOU! PRESENTED BY: SWAPNIL BANGERA ME-EXTC

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  • 1. EFFECT OF DIMENSIONS OF RMSA WITH A SINGLE SHORTING POST & EFFECT OF THE POSITION OF THE SINGLE SHORTING POST SWAPNIL BANGERA ADVANCED ANTENNA & ARRAYS ME-EXTC
  • 2. OVERVIEW MICROSTRIP ANTENNA (MSA) SHORTING EFFECT OF DIMENSIONS EFFECT OF POSITION CONCLUSION
  • 3. MICROSTRIP ANTENNA IN WIRELESS COMMUNICATION, ANTENNAS ARE KEY COMPONENTS. THEY MUST BE SMALL, LOW PROFILE WITH MINIMAL PROCESSING COSTS. LOW EFFICIENCY AND NARROW BANDWIDTH. THE FLEXIBILITY AFFORDED BY MICROSTRIP ANTENNA TECHNOLOGY HAS LED TO A WIDE VARIETY OF DESIGN AND TECHNIQUES. THE BANDWIDTH OF THE MICROSTRIP ANTENNA CAN BE INCREASED USING VARIOUS TECHNIQUES.
  • 4. SHORTING THE OPERATING FREQUENCY OF MSA IS HIGHLY DEPENDENT ON ITS DIMENSIONS. FOR LOWER FREQUENCIES THE SIZE OF THE CONVENTIONAL MSAS IS LARGE. A COMMON TECHNIQUE TO REDUCE THE OVERALL SIZE OF A MICROSTRIP PATCH ANTENNA IS SHORTING. SHORTING IS DONE BY TERMINATING ONE OF THE RADIATING EDGES WITH A SHORT CIRCUIT. THE SHORT CIRCUIT CAN BE IN THE FORM OF A METAL CLAMP OR A PIN.
  • 6. EFFECT OF DIMENSION CONSIDER A RECTANGULAR RMSA WITH A SINGLE SHORTING POST IN THE MIDDLE OF THE EDGE ALONG THE WIDTH. THE LENGTH (L=3.3) IS FIXED AND THE WIDTH (W) IS VARIED. THE DIAMETER OF THE SHORTING POST IS 0.06.
  • 8. Width(cm) X(cm) f(Ghz) VSWR BW % 0.5 0.40 2.178 1.14 2.1 1.0 0.20 1.688 1.29 1.2 1.5 0.13 1.392 1.22 0.9 2.0 0.10 1.196 1.08 0.8 2.5 0.10 1.054 1.34 0.7 3.0 0.08 0.946 1.21 0.6 3.5 0.08 0.860 1.25 0.6 4 0.08 0.790 1.35 0.5 = 3 4( + 2 )
  • 9. EFFECT OF POSITION WHEN THE SINGLE SHORTED RMSA IS FABRICATED ON A HIGHER DIELECTRIC CONSTANT SUBSTRATE, ITS RESONANCE FREQUENCY REDUCES. THE RESONANCE FREQUENCY REDUCES FURTHER WHEN THE SHORTING POST IS PLACED AT ONE CORNER OF THE RMSA. VOLTAGE DISTRIBUTION VARIES FROM ZERO AT THE SHORT LOCATION TO A MAXIMUM VALUE AT THE DIAGONALLY OPPOSITE CORNER.
  • 11. W(cm) L(cm) x(cm) f(Mhz) BW % 3.0 6.5 0.16 434 1.15 4.0 6.0 0.16 427 1.21 5.0 5.5 0.16 423 1.23 6.0 5.0 0.23 423 1.23 7.0 4.5 0.26 423 1.24 8.0 4.0 0.33 423 1.26 A SINGLE SHORT AT THE CORNER OF THE RMSA RESULTS IN A MOST COMPACT CONFIGURA
  • 12. CONCLUSION A REVIEW OF SHORTING POST LOADED MICROSTRIP ANTENNA AS WELL AS NEED OF THE SHORTING POST LOADED MICROSTRIP ANTENNA IS PRESENTED. THE SIZE OF THE MICROSTRIP PATCH CAN BE REDUCED SIGNIFICANTLY BY SHORTING POST. THE SIZE CAN BE REDUCED FURTHER BY POSITIONING THE SHORTING POST AT THE CORNER OF THE EDGE OF MICROSTRIP ANTENNA.