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Ultra wide band submillimeter-wave frequency selection surface

A frequency selective surface, sub-millimeter wave technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve problems such as heat loss return, loss, etc.

Inactive Publication Date: 2010-10-06
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequency selective surface will cause some heat loss and return loss when performing frequency separation

Method used

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  • Ultra wide band submillimeter-wave frequency selection surface
  • Ultra wide band submillimeter-wave frequency selection surface
  • Ultra wide band submillimeter-wave frequency selection surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1 Select the appropriate resonant shape to ensure a certain bandwidth and low processing complexity.

[0017] 2. According to the required frequency band, design a suitable resonant frequency. Since the frequency selective surface requires a large bandwidth of more than 200GHz, the cascade form of thin slices is used to improve the performance of the frequency selective surface and widen the bandwidth.

[0018] 3 According to the resonant characteristics of the groove type frequency selection surface, adjust the radius of the rounded corners of the rounded squares in the unit structure to complete the design.

[0019] 4 Verify the frequency response of the frequency selective surface in the frequency band of interest.

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Abstract

The invention relates to an ultra wide band submillimeter-wave frequency selection surface. The frequency selection surface of the invention adopts a thin sheet concatenation connection mode, improves the performance of the frequency selection surface, widens the band width, and improves the performance of the frequency selection surface on a transmission frequency band. A unit structure is in a circular shape, wherein the orthohexagonal period is used, the processing requirement is reduced, and the band width is widened. The invention has the following characteristics that: 1. the frequency selection surface has the ultra wide band; 2. the consumption is low; and 3. the frequency selection surface has the stability on different polarization. Thereby, the frequency selection surface designed through the method can be applied to the front end wave beam separation of a quasi-optical system as millimeter-wave and submillimeter-wave satellite remote sensing.

Description

technical field [0001] The invention relates to an ultra-wideband submillimeter wave frequency selective surface. The frequency selective surface can be applied as the front-end beam separation of the quasi-optical system for millimeter-wave and submillimeter-wave satellite remote sensing. Background technique [0002] Millimeter-wave and submillimeter-wave satellite remote sensing are widely used in spaceborne remote sensing systems. With the development of remote sensing technology, people pay more attention to the remote sensing system of multi-band multiplexing. Frequency selective surface is an important part of multi-band multiplexing system, so higher requirements are put forward for the performance of frequency selective surface: [0003] 1. Ultra-broadband. The frequency selective surface can work in millimeter wave and submillimeter wave band. [0004] Transmission frequency band: 300GHz-500GHz [0005] Reflection frequency band: 50GHz-300GHz [0006] 2. Low l...

Claims

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Application Information

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IPC IPC(8): H01P1/20
Inventor 白明姚夏元王威苗俊刚
Owner BEIHANG UNIV