Research Article

Bandwidth Enhancement of a Backfire Microstrip Patch Antenna for Pervasive Communication

Table 1

Comparison of different feeding methods.

CharacteristicsLine feedCoaxial feed
Aperture coupledProximity coupled

ConfigurationCoplanar NonplanarPlanarPlanar
Spurious feed radiationMoreMoreMoreMore
Polarization purityGoodGoodExcellentPoor
Ease of fabricationEasy Soldering and drillingPoorPoor
ReliabilityBetter Poor due to solderingGoodGood
Impedance matchingEasyEasyEasyEasy
Bandwidth2–5%2–5%2–5%13%