JPS5686503A - Mirror surface of frequency selection - Google Patents
Mirror surface of frequency selectionInfo
- Publication number
- JPS5686503A JPS5686503A JP16373479A JP16373479A JPS5686503A JP S5686503 A JPS5686503 A JP S5686503A JP 16373479 A JP16373479 A JP 16373479A JP 16373479 A JP16373479 A JP 16373479A JP S5686503 A JPS5686503 A JP S5686503A
- Authority
- JP
- Japan
- Prior art keywords
- metallic plate
- grooves
- waves
- plane
- lambda2
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Waveguides (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
PURPOSE:To obtain frequency selection mirror surface different from the direction of reflection by frequencies, by regularly providing grooves in pillar shape on a metallic plate and changing the parameter of the pillars. CONSTITUTION:A frequency selection mirror surface consists of a metallic plate 1a and grooves 1b of prism shape made on the metallic plate. When the length of sides of metallic lattice is taken respectively as (a) and (b), the incident angle of plane waves is taken as theta0, and the mirror plane is placed so that the incident plane is in parallel with the side of (b) in length, then the electromagnetic waves lambda2 in wavelength are reflected on the metallic plate 1a according to the incident direction 2 of waves, independently of the shape of grooves, by suitably selecting the values (a) and (b). That is, the electromagnetic waves in lambda2 are not entered the grooves, resulting that the grooved metallic plate 1a is equivalently regarded as a plane reflection plate to the waves in lambda2. Thus, the degree of freedom can be given to the direction of reflection by changing the slope of the metallic plate, allowing to reflect the electromagnetic waves in shorter wavelength to be reflected on the shape of grooves.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16373479A JPS5686503A (en) | 1979-12-17 | 1979-12-17 | Mirror surface of frequency selection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16373479A JPS5686503A (en) | 1979-12-17 | 1979-12-17 | Mirror surface of frequency selection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5686503A true JPS5686503A (en) | 1981-07-14 |
Family
ID=15779647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16373479A Pending JPS5686503A (en) | 1979-12-17 | 1979-12-17 | Mirror surface of frequency selection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5686503A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4814785A (en) * | 1988-01-25 | 1989-03-21 | Hughes Aircraft Company | Wideband gridded square frequency selective surface |
-
1979
- 1979-12-17 JP JP16373479A patent/JPS5686503A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4814785A (en) * | 1988-01-25 | 1989-03-21 | Hughes Aircraft Company | Wideband gridded square frequency selective surface |
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