Wide band antenna
First Claim
1. A cavity backed crossed slot antenna wherein the cavity depth is less than one eighth of the operating wavelength at the lowest frequency of operation, the major dimension of the cavity in the plane of the slots is less than one half of the wavelength at the lowest operating frequency, and the slots are excited by four capacitive coupled feed probes extending through the bottom wall of the cavity, the probes being located symmetrically with respect to the crossed slots and the ends of the probes being separated from the top wall by gaps to provide the capacitive coupling.
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Accused Products
Abstract
A cavity backed crossed slot antenna wherein the cavity depth d is less than one eighth of the operating wavelength λ at the lowest frequency of operation, the major dimension a of the cavity in the plane of the slots is less than one half of the wavelength λ at the lowest operating frequency, and the slots are excited by four symmetrically located capacitive coupled feed probes.
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Citations
3 Claims
- 1. A cavity backed crossed slot antenna wherein the cavity depth is less than one eighth of the operating wavelength at the lowest frequency of operation, the major dimension of the cavity in the plane of the slots is less than one half of the wavelength at the lowest operating frequency, and the slots are excited by four capacitive coupled feed probes extending through the bottom wall of the cavity, the probes being located symmetrically with respect to the crossed slots and the ends of the probes being separated from the top wall by gaps to provide the capacitive coupling.
Specification
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- Resources
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Current AssigneeNortel Networks Limited (Nortel Networks Corporation)
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Original AssigneeSTC PLC (f/k/a Standard Telephones and Cables)
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InventorsSmith, Martin S., Norris, Andrew P.
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Primary Examiner(s)Sikes, William L.
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Assistant Examiner(s)Wise, Robert E.
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Application NumberUS07/145,930Time in Patent Office384 DaysField of Search343/770, 343/746US Class Current343/770CPC Class CodesH01Q 13/18 the slot being backed by, o...H01Q 21/24 Combinations of antenna uni...
