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Microstrip Patch Antennas for Broadband Indoor Wireless Systems ...

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APPENDIX H: - BROADBAND ANTENNA COMPARISON<br />

Input Impedance Plot illustrating the difference between in-house antennas vs. commercial<br />

j0.2<br />

0<br />

0<br />

-j0.2<br />

j0.5<br />

0.2 0.5 1 2<br />

-j0.5<br />

j1<br />

-j1<br />

Return Loss response illustrating the difference between in-house antennas vs. commercial<br />

Return Loss (dB)<br />

0<br />

-5<br />

-10<br />

-15<br />

-20<br />

-25<br />

-30<br />

-35<br />

-40<br />

-45<br />

2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8<br />

Frequency (GHz)<br />

j2<br />

-j2<br />

Rectangular<br />

Triangular<br />

Commercial<br />

37

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