Claims
- 1. A frequency selective medium for receiving electromagnetic radiation signals incident at an off normal angle, transmitting signals of a predetermined frequency range and reflecting other frequency signals, said frequency selective medium comprising:
- a dielectric substrate having first and second surfaces;
- a plurality of first and second dipoles on each surface, the first dipoles having a first length and being configured in a first orientation, the second dipoles having a second length and being configured in a second orientation which is substantially perpendicular to the first orientation, the first and second dipoles on each surface being interspersed, the length of each first dipole being different than the length of the closest interspersed second dipole.
- 2. A frequency selective medium as in claim 1, wherein all the first dipoles are substantially equal in length; and, all the second dipoles are substantially equal in length.
Parent Case Info
This application is a continuation of copending application Ser. No. 08/812,093 filed on Mar. 4, 1997.
Government Interests
This invention was developed during the course of contract or subcontract number 065331 for the Office of Secretary of Defense/Defense Support Office. The Government has certain rights in this invention.
US Referenced Citations (3)
Non-Patent Literature Citations (3)
Entry |
Chao-Chun Chen, "Scattering by a Two-Dimensional Periodic Array of Conducting Plates," IEEE Transactions on Antennas and Propagation, vol. AP-18, No. 5, Sep. 1970, pp. 660-665. |
Chao-Chun Chen, "Transmission of Microwave Through Perforated Flat Plates of Finite Thickness," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-21, No. 1 Jan. 1973, pp. 1-6. |
Leo Young, Lloyd A. Robinson and Colin A. Hacking, "Meander-Line Polarizer," IEEE Transactions on Antennas and Propagation, May 1973, pp. 376-378. |
Continuations (1)
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Number |
Date |
Country |
Parent |
812093 |
Mar 1997 |
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