US2463347A - Adjustable wave guide joint - Google Patents
Adjustable wave guide joint Download PDFInfo
- Publication number
- US2463347A US2463347A US668245A US66824546A US2463347A US 2463347 A US2463347 A US 2463347A US 668245 A US668245 A US 668245A US 66824546 A US66824546 A US 66824546A US 2463347 A US2463347 A US 2463347A
- Authority
- US
- United States
- Prior art keywords
- segment
- waveguide
- spherical segment
- disc
- wave guide
- 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.)
- Expired - Lifetime
Links
- 230000005855 radiation Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/06—Movable joints, e.g. rotating joints
- H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
- H01P1/063—Movable joints, e.g. rotating joints the relative movement being a rotation with a limited angle of rotation
- H01P1/064—Movable joints, e.g. rotating joints the relative movement being a rotation with a limited angle of rotation the axis of rotation being perpendicular to the transmission path, e.g. hinge joint
Definitions
- This invention relates to waveguides, and particularly to an improved form of movable or Wobble to allow angular movement between two guide sections.
- Couplings which permitted angular movement between waveguide sections have previously been open to the objection of having substantial radiation loss.
- choke couplings have been used cut back to permit the desired movement.
- This cutback arrangement introduced relatively large spaces between the moving parts, and. the radiation loss became increasingly large as the spacing increased.
- the present invention uses a universal joint which has only a very small gap, and keeps the gap a constant size at any angle through which the joint may be turned.
- Fig. 1 is a sectional view of a wobble joint incorporating the invention, taken as indicated by line I--I in Fig. 2;
- Fig. 2 is a bottom view of the embodiment shown sectionally in Fig. 1;
- Fig. 3 is a fragmentary view similar to that of Fig. 1, but showing a modification of the invention.
- the wobble joint shown in Fig. 1 includes two joined rectangular outer housing blocks I and 2 in which a seat 4 is centrally formed in the shape of a spherical segment. Within the spherically curved seat 4 is movably disposed a snugly fitting spherical segment 5 having a closed end 6 and an open end I. A waveguide section 9, which is illustrated as being of conventional rectangular crosssection, is fixed to the closed end 6 and opens into the space within the spherical segment 5. Outer housin blocks I and 2 may be assembled about segment 5 after the spherically curved portions which combine to form seat 4 have been machined, and secured by means described hereafter.
- Segment 5 is internally bored to form a radial choke ID, or cylindrical cavity, the axis of revolution of which is coincident with the center of symmetry of the waveguide section 9.
- the radius of the cavity is so selected that the walls II, defining the boundary of the choke Ill, are effectively one-half wavelength from the waveguide wall 9.
- effectively one-half wavelength is meant that the radius selected is the one which causes the standing wave ratio in the waveguide sections to be a minimum.
- the joint It is desirable to construct the joint with a step in the flat surface a quarter wavelength from the outside of the cavity. This is the region at which the choke currents are a minimum, and hence is most desirable for the break in the conducting surface necessary in broad banding the joint.
- This step includes a disc member I2 inserted into a bore I4 formed in segment 5.
- Bore I4 is coaxial with but of larger diameter than choke I 9, and the juncture therebetween forms a shoulder I5, against which disc I 6 is seated.
- Disc I B has a bore I I formed therethrough of such diameter that the spacing between the bore and choke wall I I will be one-quarter wavelength.
- the bore then constitutes the beginnning of the step or break in the cavity.
- an inner spherical segment I9 which is about three times the thickness of disc member I2, and is spaced symmetrically about the same center of revolution as the disc I2 and spherical segment 5.
- is used to hold waveguide 29 fixed relative to the outer housing block 2.
- the bracket may be secured to the housing block 2 by bolts 22 which also serve to hold blocks I and 2 together.
- a pin 20, shown in Fig. 3 may be adjustably inserted in the housing 2, and a keyway 2I cut into the surface of segment 5 to receive the end 24 of the pin.
- Means for connecting a first waveguide section to a second waveguide section while permitting angular movement between the axes thereof. comprising a hollow spherical segment having a closed end through which said first guide section is fixed, the wall of said hollow segment being spaced effectively one-half wavelength about said first guide section, a spherically curved seat rotatably surrounding said hollow segment, means for rigidly connecting said seat to said second waveguide section, an inner spherical segment terminally disposed about said second waveguide section within said hollow spherical segment, a substantially thinner disc having an annular width of one-quarter wavelength movably disposed symmetrically about said inner spheriical segment and fixed within said hollow spherical segment, and means for restricting said an! nular movement to movement within one plane.
- a coupling for waveguide sections arranged to permit relative angular movement therebetween comprising a hollow spherical segment having a closed end through which a waveguide may be secured, a spherically curved seat in which said segment may be held rotatably, a second waveguide section, means, for joining said second section to said seat, an inner spherical segment fixed about said second waveguide section, and a disc substantially thinner than said segment disposed movably about said inner spherical segment and fixed within said hollow segment; said hollow segment portion having its wal p ce f ti el n a1f wave ngth about said waveguide section one-quarter wavelength from said inner spherical segment.
- a microwave wobble joint comprising a spherical segment having a waveguide fixed thereto, a seat curved congruently about said segment and arranged for movement relative thereto, a cylindrical cavity formed within said segment extending effectivelyhalf a wavelength outwardly from said waveguide, a disc closing off said cylindrical cavity, said disc having a bore therethrough one-quarter wavelength inwardly from the Walls of said choke, an inner spherical segment substantially thicker than said disc disposed Within said bore for relative movement between said segment and said disc, and a waveguide disposed through said inner spherical segment.
Landscapes
- Aerials With Secondary Devices (AREA)
Description
March 1, 1949. w, ARON ET AL 2,463,347
' ADJUSTABLE WAVEGUIDE JOINT Filed May a, 1946- FIG. I
FIG.2
F IG. 3
' INVENTORS 24 2 WALTER ARON FRANCIS E. EHLERS 5 BY ArrbR/ve'r Patented Mar. 1, 1949 ADJUSTABLE WAVE GUIDE JOINT Walter Aron, Berkeley, Calif., and Francis Edward Ehlers, Providence, R. I., assignors, by mesne assignments, to the United States of America as represented by the Secretary of War Application May 8, 1946, Serial No. 668,245
3 Claims. 1
This invention relates to waveguides, and particularly to an improved form of movable or Wobble to allow angular movement between two guide sections.
Couplings which permitted angular movement between waveguide sections have previously been open to the objection of having substantial radiation loss. Commonly, choke couplings have been used cut back to permit the desired movement. This cutback arrangement introduced relatively large spaces between the moving parts, and. the radiation loss became increasingly large as the spacing increased. The present invention uses a universal joint which has only a very small gap, and keeps the gap a constant size at any angle through which the joint may be turned.
The invention is illustrated in the drawing, in which:
Fig. 1 is a sectional view of a wobble joint incorporating the invention, taken as indicated by line I--I in Fig. 2;
Fig. 2 is a bottom view of the embodiment shown sectionally in Fig. 1; and
Fig. 3 is a fragmentary view similar to that of Fig. 1, but showing a modification of the invention.
The wobble joint shown in Fig. 1 includes two joined rectangular outer housing blocks I and 2 in which a seat 4 is centrally formed in the shape of a spherical segment. Within the spherically curved seat 4 is movably disposed a snugly fitting spherical segment 5 having a closed end 6 and an open end I. A waveguide section 9, which is illustrated as being of conventional rectangular crosssection, is fixed to the closed end 6 and opens into the space within the spherical segment 5. Outer housin blocks I and 2 may be assembled about segment 5 after the spherically curved portions which combine to form seat 4 have been machined, and secured by means described hereafter.
It is desirable to construct the joint with a step in the flat surface a quarter wavelength from the outside of the cavity. This is the region at which the choke currents are a minimum, and hence is most desirable for the break in the conducting surface necessary in broad banding the joint.
This step includes a disc member I2 inserted into a bore I4 formed in segment 5. Bore I4 is coaxial with but of larger diameter than choke I 9, and the juncture therebetween forms a shoulder I5, against which disc I 6 is seated. Disc I B has a bore I I formed therethrough of such diameter that the spacing between the bore and choke wall I I will be one-quarter wavelength. The bore then constitutes the beginnning of the step or break in the cavity. Within bore I "I is movably disposed an inner spherical segment I9 which is about three times the thickness of disc member I2, and is spaced symmetrically about the same center of revolution as the disc I2 and spherical segment 5.
Through the center of inner spherical member I9 is fixed a waveguide member 20. When the inner spherical segment I9 and the spherical segment 5 are properly alined, the center lines of waveguide sections 9 and 20 will coincide.
A bracket 2| is used to hold waveguide 29 fixed relative to the outer housing block 2. The bracket may be secured to the housing block 2 by bolts 22 which also serve to hold blocks I and 2 together. When the waveguide section 9 is tilted, either with or without rotation, the outer spherical segment 5 is free to turn in any desired direction within the seat 4. Disc l2 will maintain close contact with the inner spherical segment I9 throughout such movement, since the centers of the spherical surfaces of members 5 and I9 are the same.
In the event that it is desired to permit motion of the waveguide member 9 relative to guide member 20 in one plane only, a pin 20, shown in Fig. 3, may be adjustably inserted in the housing 2, and a keyway 2I cut into the surface of segment 5 to receive the end 24 of the pin.
It will be apparent that with the construction shown, openings at the joints through which undesired radiation can occur have been substantially eliminated. Regardless of the angle between the' waveguides 9 and 20, there is the same effective separation between them, and the presence of the choke I'Il minimizes radiation loss. Other connecting means, such as gimbal rings, might be substituted for those elements now joining segment 5 and guide I9.
What is claimed is:
1. Means for connecting a first waveguide section to a second waveguide section while permitting angular movement between the axes thereof. comprising a hollow spherical segment having a closed end through which said first guide section is fixed, the wall of said hollow segment being spaced effectively one-half wavelength about said first guide section, a spherically curved seat rotatably surrounding said hollow segment, means for rigidly connecting said seat to said second waveguide section, an inner spherical segment terminally disposed about said second waveguide section within said hollow spherical segment, a substantially thinner disc having an annular width of one-quarter wavelength movably disposed symmetrically about said inner spheriical segment and fixed within said hollow spherical segment, and means for restricting said an! nular movement to movement within one plane.
2. A coupling for waveguide sections arranged to permit relative angular movement therebetween, comprising a hollow spherical segment having a closed end through which a waveguide may be secured, a spherically curved seat in which said segment may be held rotatably, a second waveguide section, means, for joining said second section to said seat, an inner spherical segment fixed about said second waveguide section, and a disc substantially thinner than said segment disposed movably about said inner spherical segment and fixed within said hollow segment; said hollow segment portion having its wal p ce f ti el n a1f wave ngth about said waveguide section one-quarter wavelength from said inner spherical segment.
3. A microwave wobble joint, comprising a spherical segment having a waveguide fixed thereto, a seat curved congruently about said segment and arranged for movement relative thereto, a cylindrical cavity formed within said segment extending effectivelyhalf a wavelength outwardly from said waveguide, a disc closing off said cylindrical cavity, said disc having a bore therethrough one-quarter wavelength inwardly from the Walls of said choke, an inner spherical segment substantially thicker than said disc disposed Within said bore for relative movement between said segment and said disc, and a waveguide disposed through said inner spherical segment.
WALTER. ARON. FRANCIS EDWARD EHLERS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,407,3l8 Mieher Sept. 10, 1946 2,420,007 Olden May 6, 1947
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US668245A US2463347A (en) | 1946-05-08 | 1946-05-08 | Adjustable wave guide joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US668245A US2463347A (en) | 1946-05-08 | 1946-05-08 | Adjustable wave guide joint |
Publications (1)
Publication Number | Publication Date |
---|---|
US2463347A true US2463347A (en) | 1949-03-01 |
Family
ID=24681564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US668245A Expired - Lifetime US2463347A (en) | 1946-05-08 | 1946-05-08 | Adjustable wave guide joint |
Country Status (1)
Country | Link |
---|---|
US (1) | US2463347A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2805401A (en) * | 1953-11-24 | 1957-09-03 | Bell Telephone Labor Inc | Eta-plane hinge joint |
US4287497A (en) * | 1979-06-12 | 1981-09-01 | Motorola Inc. | Integrated universal RF joint and gimbal system |
US20030061845A1 (en) * | 2001-09-28 | 2003-04-03 | Delphi Technologies Inc. | Wobble joint |
US20160218408A1 (en) * | 2013-06-19 | 2016-07-28 | Japan Aerospace Exploration Agency | System for feeding high-frequency waves to deployment structure |
WO2022063441A1 (en) | 2020-09-28 | 2022-03-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2407318A (en) * | 1942-06-18 | 1946-09-10 | Sperry Gyroscope Co Inc | High-frequency apparatus |
US2420007A (en) * | 1944-09-30 | 1947-05-06 | Rca Corp | Flexible joint for waveguides |
-
1946
- 1946-05-08 US US668245A patent/US2463347A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2407318A (en) * | 1942-06-18 | 1946-09-10 | Sperry Gyroscope Co Inc | High-frequency apparatus |
US2420007A (en) * | 1944-09-30 | 1947-05-06 | Rca Corp | Flexible joint for waveguides |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2805401A (en) * | 1953-11-24 | 1957-09-03 | Bell Telephone Labor Inc | Eta-plane hinge joint |
US4287497A (en) * | 1979-06-12 | 1981-09-01 | Motorola Inc. | Integrated universal RF joint and gimbal system |
US20030061845A1 (en) * | 2001-09-28 | 2003-04-03 | Delphi Technologies Inc. | Wobble joint |
US7216516B2 (en) * | 2001-09-28 | 2007-05-15 | Delphi Technologies, Inc. | Wobble joint |
US20160218408A1 (en) * | 2013-06-19 | 2016-07-28 | Japan Aerospace Exploration Agency | System for feeding high-frequency waves to deployment structure |
US10290913B2 (en) * | 2013-06-19 | 2019-05-14 | Japan Aerospace Exploration Agency | Deployment structure comprised of flat panels with waveguides disposed therein, where the flat panels are rotated into engagement with each other to couple the waveguides |
WO2022063441A1 (en) | 2020-09-28 | 2022-03-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna assembly |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2706279A (en) | Flexible joint for wave guides | |
US2813409A (en) | Universal coupling | |
US3381497A (en) | Universal joint | |
US2463347A (en) | Adjustable wave guide joint | |
GB789639A (en) | Improvements in coupling arrangements for electromagnetic wave transmission paths | |
US2584399A (en) | Rotatable wave guide joint | |
US2641115A (en) | Universal joint construction | |
US2956248A (en) | Flexible transmission line | |
US2521818A (en) | Wave guide coupling | |
GB991346A (en) | Improvements in or relating to universal joints | |
US2632807A (en) | Wave guide joint | |
GB1299032A (en) | Improvements relating to waveguides | |
US2708263A (en) | Rotary waveguide joint | |
US2627551A (en) | Ultrahigh-frequency transmission structure | |
GB581992A (en) | Improvements in or relating to reflection eliminating transmission line joints | |
US2802352A (en) | Universal joint | |
US2528248A (en) | Wide band flexible section for wave guides | |
US2254972A (en) | Universal joint | |
GB1195653A (en) | Resonant Cavity Having Adjacent Coupling Elements to Provide a Rejection Frequency | |
US8920249B2 (en) | High angle universal coupling with constant or near constant characteristics | |
US2685069A (en) | Adjustable choke | |
US4625188A (en) | Pivoting joint for ultra-high frequency waveguides | |
US4913513A (en) | Monocable bidirectional optical fiber connector assembly | |
US2514428A (en) | Electronic apparatus of the cavity resonator type | |
US2903866A (en) | Universal joint |