Techniques for Improving Element Bandwidth
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This document discusses several techniques for improving the bandwidth of microstrip antennas. It describes using impedance matching and increasing substrate thickness to cancel inductive effects. It also discusses using proximity coupling with a small open tuning stub to provide broad bandwidth without excess substrate thickness. Additionally, it covers using two electromagnetically coupled resonant patches to extend bandwidth from 10 to 20% and using a strip-slot-foam-inverted-patch design with slot size and foam substrate to achieve over 20% bandwidth.
Techniques for Improving Element Bandwidth
- 1. Techniques for Improving Element Bandwidth Name :Ashish S. Patil Roll no.:14MV009 ME MICROWAVE
- 2. CONTENT : Overview Impedance matching technique for increasing bandwidth of MA Probe compensation in Thick Microstrip patch Increasing bandwidth of microstrip antenna by Proximity coupling Characteristic of two layer electromagnetically coupled RPA The SSFIP: A global concept for high performance broadband planar antenna
- 3. OVERVIEW Impedance bandwidth Pattern bandwidth Gain bandwidth
- 4. Impedance matching technique for increasing bandwidth of MA Bandwidth increase by increasing substrate thickness Or dielectric constant reduced But this is limited by inductive Impedance This problem overcome by use thick substrate with same type Of additional impedance matching to cancel inductance This paper use Bode Fano criteria to design matching network can Increase impedance bandwidth by 10-12%
- 6. Probe compensation in Thick Microstrip patch Increase the substrate thickness Inductive effect occur in which probe inductance prevent matching of patch impedance to input connector This inductive effect can be overcome by adding series capacitor in probe feed circuit
- 8. Increasing bandwidth of microstrip antenna by Proximity coupling Proximity coupling using small open tuning stub Stub is connected in shunt with feed line Provide broad bandwidth without excess substrate thickness
- 10. Characteristic of two layer electromagnetically coupled RPA Bandwidth extension technique use two or more stagger tuned Resonator Implemented with stacked patches or combination of dissimilar Element filled by air Bandwidth increase from 10 to 20%
- 12. The SSFIP: A global concept for high performance broadband planar antenna SSFIP = Strip-Slot-Foam-Inverted-Patch Slot size used to increase bandwidth Foam antenna substrate was used at x band to achieve excess of bandwidth of 20%