ANTENG Ch14SAL032706

ANTENG Ch14SAL032706 - ECE 5318/6352 Antenna Engineering...

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1 CHAPTER 14 CHAPTER 14 Microstrip Microstrip Antennas Antennas ECE 5318/6352 ECE 5318/6352 Antenna Engineering Antenna Engineering Spring 2006 Spring 2006 Dr. Stuart Long Dr. Stuart Long
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2 ± PHYSICAL PHYSICAL ( microstrip, printed circuit, or patch antennas ) Metallic patch over a ground plane Separated by an electrically thin dielectric substrate layer Fabricated using photo etching techniques; rugged; easy to fabricate; inexpensive; comfortable; low-profile ± FABRICATION FABRICATION
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3 ± GEOMETRY GEOMETRY Patch can be circular, rectangular, or other shape
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4 ± FEEDING FEEDING Fed by coaxial probe; microstrip line; aperture μ -strip line coaxial probe
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5 ± FEEDING FEEDING Aperture-coupled feed Proximity coupled feed
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6 ± BEAM BEAM WIDTH / WIDTH / BAND BAND WIDTH WIDTH Generally broad beamwidth, narrow bandwidth like a high Q-cavity energy dissipated energy stored r Q ω = Q f Δ f 1 0 = [14-88] E-plane
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7 ± ARRAY ELEMENT ARRAY ELEMENT Often used as an array element
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8 ± CAVITY MODEL CAVITY MODEL View structure as a cavity bounded by a perfect electric conductor and by a perfect magnetic and by a perfect magnetic conductor at cavity conductor at cavity boundaries boundaries PMC PEC P M C x z y L W 0 h 0 E h 0 at PEC tan = = = x and x 0 J 0 H W 0, z and L , 0 at PMC n tan = = = = y
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This note was uploaded on 09/09/2010 for the course ECE 4436 taught by Professor Staff during the Spring '08 term at University of Houston.

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ANTENG Ch14SAL032706 - ECE 5318/6352 Antenna Engineering...

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