Various antenna shapes and size reduction.
|Figure||Antenna shape||Freq.||Substrate||Size reduction |
|3(a)||Circular patch with slots placed on the diameter||2.45 GHz||FR-4 substrate ( = 4.4)||12|
|3(b)||Square patch with cross-shaped slot etched on its surface||2.45 GHz||Two Arlon A25N substrates separated by ROHACELL 51 foam layer||32.5|
|3(c)||Forty slits on the perimeter of a square patch, ten on each side||2.36 GHz||Taconic, TLY-5 laminate ( = 2.21)||48|
|3(d)||Square patch with two orthogonal pairs of irregular, unsymmetrical slits||GPS design frequency ()||RT/Duroid 6010 LM substrate ( = 10.2)||40|
|3(e)||Square patch with interconnection of four corner patches alternating with four strips and a fifth central patch||5.85 GHz||RT/Duroid 5870 substrate ( = 2.33)||60|