초록 ▼

An artificial magnetic conductor is resonant at multiple resonance frequencies. The artificial magnetic conductor is characterized by an effective media model which includes a first layer and a second layer. Each layer has a layer tensor permittivity and a layer tensor permeability having non-zero e

An artificial magnetic conductor is resonant at multiple resonance frequencies. The artificial magnetic conductor is characterized by an effective media model which includes a first layer and a second layer. Each layer has a layer tensor permittivity and a layer tensor permeability having non-zero elements on the main tensor diagonal only.

대표청구항 ▼

1. An artificial magnetic conductor (AMC) resonant with a substantially zero degree reflection phase over at least two resonant frequency bands, the artificial magnetic conductor comprising a frequency selective surface characterized by a plurality of Lorentz resonant frequencies in transverse permi

1. An artificial magnetic conductor (AMC) resonant with a substantially zero degree reflection phase over at least two resonant frequency bands, the artificial magnetic conductor comprising a frequency selective surface characterized by a plurality of Lorentz resonant frequencies in transverse permittivity at independent, non-harmonically related, predetermined frequencies different from the resonant frequency bands, wherein the frequency selective surface has a transverse permittivity ε 1t defined bywherein Y(ω) is a frequency dependent admittance function for the frequency selective surface, j is the imaginary operator, ω corresponds to angular frequency, ε 0 is the permittivity of free space, and t corresponds to thickness of the frequency selective surface. 2. The AMC of claim 1 wherein the frequency selective surface has a normal permeability μ 1z defined bywherein Z(ω) is a frequency dependent impedance function, j is the imaginary operator, ω corresponds to angular frequency, μ 0 is the permeability of free space, and t corresponds to thickness of the frequency selective surface.