초록 ▼

A multi-frequency radome includes a material-tuned radome portion for generating a low frequency passband of the radome and an integrated low pass frequency selective surface (FSS) portion for tuning a high frequency passband of the radome. The FSS portion provides a reactance necessary to move an u

A multi-frequency radome includes a material-tuned radome portion for generating a low frequency passband of the radome and an integrated low pass frequency selective surface (FSS) portion for tuning a high frequency passband of the radome. The FSS portion provides a reactance necessary to move an upper passband of the material-tuned radome to a desired spectral location. Because the FSS portion is a low pass structure relative to the low frequency passband of the material-tuned radome portion, it does not substantially affect the low frequency passband when the FSS portion is applied to the material-tuned radome. In one embodiment, the FSS portion is designed to take advantage of various well known properties of FSS structures, such as the ability to tune for angle of arrival and polarization properties.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for tuning a radome comprising the steps of:providing a radome structure having at least one layer of dielectric material, said radome structure having a transmission frequency response that describes, as a function of frequency, a level of attenuation experien

[ What is claimed is:] [1.]1. A method for tuning a radome comprising the steps of:providing a radome structure having at least one layer of dielectric material, said radome structure having a transmission frequency response that describes, as a function of frequency, a level of attenuation experienced by a radio frequency signal incident upon a first surface of said radome structure before emerging from a second surface of said radome structure, said transmission frequency response including a first resonance region having a center frequency at a first frequency value and a second resonance region having a center frequency at a second frequency value that is different from said first frequency value; anddisposing a conductive frequency selective surface (FSS) upon a first portion of said radome structure, said disposing step causing said center frequency of said second resonance region to shift from said second frequency value to a third frequency value, said third frequency value being different from said second frequency value, wherein both said first and second resonance regions with said center frequencies at said first and third frequency values, respectively, are present after said disposing step.