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Date APRIL 1 2011
ldquoMicrostrip Antenna Technology
ITS Engineering College
Presented by
RITESH KUMAR
OutlinebullIntroduction bullAdvantage and disadvantagebullFeed arrangementsbullRadiating mechanismbullRadiation pattern and lossesbullModellingbullDesign Procedurebull-Numerical-
Advantages of Microstrip Antennasbull Low profile (can even be ldquoconformalrdquo)bull Easy to fabricate (use etching and phototlithography)bull Easy to feed (coaxial cable microstrip line etc) bull Easy to use in an array or incorporate with othermicrostrip circuit elementsbull Patterns are somewhat hemispherical with amoderate directivity (about 6-8 dB is typical)
Disadvantages of Microstrip Antennas1048766 Low bandwidth (but can be improved by a variety oftechniques) Bandwidths of a few percent are typical1048766 Efficiency may be lower than with other antennasEfficiency is limited by conductor and dielectriclosses and by surface-wave loss Conductor and dielectric losses become moresevere for thinner substrates Surface-wave losses become more severe forthicker substrates (unless air or foam is used)
FEED
ARRANGEMENTS
RADIATION MECHANISM
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
OutlinebullIntroduction bullAdvantage and disadvantagebullFeed arrangementsbullRadiating mechanismbullRadiation pattern and lossesbullModellingbullDesign Procedurebull-Numerical-
Advantages of Microstrip Antennasbull Low profile (can even be ldquoconformalrdquo)bull Easy to fabricate (use etching and phototlithography)bull Easy to feed (coaxial cable microstrip line etc) bull Easy to use in an array or incorporate with othermicrostrip circuit elementsbull Patterns are somewhat hemispherical with amoderate directivity (about 6-8 dB is typical)
Disadvantages of Microstrip Antennas1048766 Low bandwidth (but can be improved by a variety oftechniques) Bandwidths of a few percent are typical1048766 Efficiency may be lower than with other antennasEfficiency is limited by conductor and dielectriclosses and by surface-wave loss Conductor and dielectric losses become moresevere for thinner substrates Surface-wave losses become more severe forthicker substrates (unless air or foam is used)
FEED
ARRANGEMENTS
RADIATION MECHANISM
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Advantages of Microstrip Antennasbull Low profile (can even be ldquoconformalrdquo)bull Easy to fabricate (use etching and phototlithography)bull Easy to feed (coaxial cable microstrip line etc) bull Easy to use in an array or incorporate with othermicrostrip circuit elementsbull Patterns are somewhat hemispherical with amoderate directivity (about 6-8 dB is typical)
Disadvantages of Microstrip Antennas1048766 Low bandwidth (but can be improved by a variety oftechniques) Bandwidths of a few percent are typical1048766 Efficiency may be lower than with other antennasEfficiency is limited by conductor and dielectriclosses and by surface-wave loss Conductor and dielectric losses become moresevere for thinner substrates Surface-wave losses become more severe forthicker substrates (unless air or foam is used)
FEED
ARRANGEMENTS
RADIATION MECHANISM
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Disadvantages of Microstrip Antennas1048766 Low bandwidth (but can be improved by a variety oftechniques) Bandwidths of a few percent are typical1048766 Efficiency may be lower than with other antennasEfficiency is limited by conductor and dielectriclosses and by surface-wave loss Conductor and dielectric losses become moresevere for thinner substrates Surface-wave losses become more severe forthicker substrates (unless air or foam is used)
FEED
ARRANGEMENTS
RADIATION MECHANISM
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
FEED
ARRANGEMENTS
RADIATION MECHANISM
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
RADIATION MECHANISM
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
RADIATION PATTERN
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
MODELLING
Two models are commonly used for analyzing patch antennas
They are following
1Trasmission line model
2Cavity model
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
TRANSMISSION LINE MODEL
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
CAVITY MODEL
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
DESIGN PROCEDURE
1 Element Width
2 Radiation Pattern3 Slot Susceptance
4Input Admittance
5 Radiation Resistance Conductance
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
6Probe position
7 Q-factor amp Losses
8Antenna Efficiency
9Bandwidth
10 Directivity and Gain
11 Beamwidth
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Microstrip Antenna Array
16 x 16array withfeed network
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Antenna Technology is rapidly changingRequirement for innovative thinking to meet thechallenges ndash multi-band multi-polarizationelectrical mechanical tilt variable beamwidthintegrated antenna smart antenna etcDesign is the key thingRequires precision manufacturingLow cost without sacrifice in performance
CONCLUSIONS
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Special Thanks to ndashSweta aggarawalFor his valuable explanations
Any Quenstions
Any Quenstions
