Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
  • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
  • H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
  • H01P11/002—Manufacturing hollow waveguides
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
  • H01P1/00—Auxiliary devices
  • H01P1/24—Terminating devices
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
  • H01P1/00—Auxiliary devices
  • H01P1/24—Terminating devices
  • H01P1/28—Short-circuiting plungers
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
  • H01P5/00—Coupling devices of the waveguide type
  • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
  • H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
  • H01P5/107—Hollow-waveguide/strip-line transitions

Definitions

• the present invention is a micro-wave circuit used for a micro-sigma-wave communication device and a satellite broadcast reception computer.
• FIG. 7 shows a conventional circular waveguide short-circuit portion
• FIG. 8 shows a cross-sectional view thereof.
• reference numeral 1 denotes a metal housing having a circular waveguide 5
• reference numeral 2 denotes a mounting surface of the short board 4.
• the short plate 2 is fixed to the mounting surface 2 by a screw or the like to form a short surface.
• the microwave propagating through the circular waveguide 5 does not totally reflect without loss and changes its propagation direction when the short plate 4 is in an ideal short circuit state. .
• the surface accuracy of the mounting surface 2 is limited. Due to the flatness of the plate and the shortness of the short plate 4, the contact at the end face of the circular waveguide in particular was not sufficient, so the short plate 4 was completely Does not work as a short shot. For this reason, when using the short noise compo- nent shot surface, the input power cannot be sufficiently reflected, causing noise figure degradation and input VSWR degradation. Had the following problems.
• the present invention secures sufficient contact between the outer conductor of the first metal housing having the cylindrical microwave transmission path and the conductor having the second planar shape.
• it is also intended to provide a microwave circuit exhibiting good characteristics.
• a microwave circuit according to the present invention has a concentric ridge at an end face of a cylindrical micro-wave transmission line outside a cylindrical inner wall. It is constituted by contacting the first metal housing and the metal housing having the second planar shape.
• the first metal housing is brought into contact with the metal housing having the second planar shape in a narrow range only in the raised portion provided outside the cylindrical inner wall. Therefore, the electromagnetic contact between the housings is sufficient, and good characteristics can be secured.
• FIG. 1 is an exploded perspective view showing a short-circuit portion of a circular waveguide in one embodiment of the present invention
• FIG. 2 is a cross-sectional view thereof
• FIG. 3 is a circular conductor according to another embodiment of the present invention.
• FIG. 4 is an exploded perspective view showing a short-circuit portion of a waveguide
• FIG. 4 is a cross-sectional view of the same
• FIGS. 5 and 6 are views of one circular waveguide in the second and third embodiments of the present invention.
• FIG. 7 is an exploded perspective view showing a conventional circular waveguide short-circuited portion
• FIG. 8 is a cross-sectional view thereof.
• Fig. 1 shows a short-circuit portion of a circular waveguide according to the present invention
• Fig. 2 shows a cross-sectional view thereof.
• 1 is a metal case having a circular waveguide 5
• 2 is a mounting surface of a short board 4.
• the microwave propagating in the circular waveguide 5 changes the propagation direction without loss and without total reflection if the short-circuit state in the short plate 4 is sufficient.
• the short plate 2 is brought into contact with the concentric raised portion 3 before contacting the mounting surface 2 at the time of mounting. Since the short plate 4 at the inner wall end face of the circular waveguide 5, which is important when realizing the short surface, is Good short-circuit characteristics can be ensured without being affected by the surface accuracy of the cutting surface 2.
• FIG. 3 shows a short-circuited portion of a circular waveguide in another embodiment of the present invention
• FIG. 4 shows a cross-sectional view of the short-circuited portion.
• reference numeral 10 denotes a metal housing having a circular waveguide 12
• reference numeral 2 denotes a mounting surface of the short plate.
• 11 are concentric ridges.
• the processing is made easier by changing the cross-sectional shape of the concentric raised portion 11.
• the circular guide is not affected by the surface accuracy of the contact surface 2 and the shot # 4 comes into contact with the concentric raised portion 11 as in the previous embodiment.
• the short-circuit surface of the waveguide tube 1 2 can ensure sufficiently good characteristics o
• FIGS. 5 and 6 are cross-sectional views of a circular waveguide-to-microstrip line conversion section according to another embodiment of the present invention.
• 10 is a metal housing having a circular waveguide 12, 6 is a boss fitting, and 7 is a MIC having a microstrip line.
• the substrate, 8 is a post bracket 6 and a metal supporter for forming a hollow shaft line, and 9 is a dielectric support for forming the post bracket 6 and a dielectric coaxial line. It is.
• the micro wave propagating in the circular waveguide 12 in the direction perpendicular to the plane of the paper is converted to the same mode by the six parts of the boss fitting. Then, the light propagates through the same line formed by 9 and 8, and is subjected to further mode conversion at the joint between the MIC substrate 7 and the mounting bracket 6. Propagate the cross-stripe line.
• the metal spacer 8 In the waveguide-microstrip line converter as described above, there is sufficient contact between the metal spacer 8 and the metal housing 10. Otherwise, discontinuities will occur in the outer conductor of each coaxial line formed by the metal spacer 8 and the dielectric supporter 9, so that the distance between the metal conductor 8 and the dielectric supporter 9 may be reduced. It causes loss and VSWR degradation during clock wave propagation. Therefore, in FIG. 5 ', the concentric raised portion 10 is provided on the metal housing 1 side, and in FIG. 6, the metal support 8 is provided on the metal support 8 side. of 2 Sufficient contact is made in the outer conductor of the two coaxial lines, and good transmission characteristics can be ensured.
• the concentric ridge is provided on the outer conductor forming one coaxial line, and the outer conductor of the other coaxial line is brought into contact with the outer conductor of the other coaxial line.
• the present invention relates to a first metal housing having a concentric raised portion on the end face of a cylindrical microphone aperture transmission line and an outer side from a cylindrical inner wall, and a second planar shape.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Waveguide Switches, Polarizers, And Phase Shifters (AREA)
• Microwave Amplifiers (AREA)
• Waveguide Connection Structure (AREA)
• Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
• Control Of Motors That Do Not Use Commutators (AREA)
• Non-Reversible Transmitting Devices (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=16955999

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (3)

Citations (2)

Family Cites Families (5)

• 1990
  • 1990-09-03 JP JP2233500A patent/JPH04113703A/ja active Pending
• 1991
  • 1991-09-02 DE DE69120052T patent/DE69120052T2/de not_active Expired - Fee Related
  • 1991-09-02 KR KR1019920701030A patent/KR920702561A/ko not_active Application Discontinuation
  • 1991-09-02 CA CA002067729A patent/CA2067729C/en not_active Expired - Fee Related
  • 1991-09-02 EP EP91915147A patent/EP0500949B1/en not_active Expired - Lifetime
  • 1991-09-02 WO PCT/JP1991/001171 patent/WO1992004742A1/ja active IP Right Grant

Patent Citations (2)

Non-Patent Citations (1)

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