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Cavity backed patch antenna


Cavity backed patch antenna

Typically the antenna height can very well exceed 3-5 inches at UHF (Ultra High Frequency) frequencies. Recently we demonstrated that by designing and using a Non-Uniform Aperiodic (NUA) meatsurface a dipole can be placed less than 1 inch from the ground for operation from MHz.
2 below. Cavity Antenna and Fin An illustrative dielectric support structure for antenna 44 is shown in the perspective view of Apple's patent FIG. 9. The cavity antenna may be implemented by forming conductive cavity walls over a dielectric support structure.
The cable may have a conductive outer braid conductor and a center conductor or other suitable conductive lines. The outer conductor may serve as a ground conductor and may be coupled to planar ground structures in the antenna.
Kozlov;. (Eng. Prof. V.P. Kudin (Belarus. (Phys.-Math. Prof. O.S. Litvinov; . (Eng. Prof. V.P. Meshchanov;. (Eng. Prof. V.N. Mitrokhin;. (Eng. Prof. V.A. Obukhovets (Deputy Editor. (Eng. Prof. Perfilov;. (Eng. Prof. S.B. Raevskii;. (Eng. Prof.
Apple's Third Patent Claim states that the cavity antenna defined in claim 1 wherein the dielectric support structure comprises a fin on which the inverted-F antenna probe is formed. To review Apple's other twenty-one patent claims and invention detailing, see granted patent 8,102,321.
Oliver, K. Vanhille, J.M. Rollin, S. Raman, A W-band Micromachined 3-D Cavity-Backed Patch Antenna Array with Integrated Diode Detector, IEEE Trans. on Microwave Theory and Techniques, vol. 60, no. 2, pp. 284-292, Feb. 2012.
An advantage of using a solid dielectric in forming some or all of dielectric support structure 74 is that this type of arrangement may help prevent intrusion of dust, liquids, or other foreign matter into portions of antenna cavity 62.
1114, pp. 149152. Year 2001 J. Zhao and S. Raman, Design of "Chip-Scale" Patch Antennas for 5-6 GHz Wireless Microsystems, 2001 IEEE AP-S International Symposium Digest, Boston, MA, Jul. 813, vol. 2, pp. 69.




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