Research Article
Bandwidth Enhancement of a Backfire Microstrip Patch Antenna for Pervasive Communication
Table 1
Comparison of different feeding methods.
| Characteristics | Line feed | Coaxial feed
| Aperture coupled | Proximity coupled |
| Configuration | Coplanar | Nonplanar | Planar | Planar | Spurious feed radiation | More | More | More | More | Polarization purity | Good | Good | Excellent | Poor | Ease of fabrication | Easy | Soldering and drilling | Poor | Poor | Reliability | Better | Poor due to soldering | Good | Good | Impedance matching | Easy | Easy | Easy | Easy | Bandwidth | 2–5% | 2–5% | 2–5% | 13% |
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