US2834884A - Wave guide with crystal diode socket having captive clamping means - Google Patents
Wave guide with crystal diode socket having captive clamping means Download PDFInfo
- Publication number
- US2834884A US2834884A US421721A US42172154A US2834884A US 2834884 A US2834884 A US 2834884A US 421721 A US421721 A US 421721A US 42172154 A US42172154 A US 42172154A US 2834884 A US2834884 A US 2834884A
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- US
- United States
- Prior art keywords
- wave guide
- crystal
- clamping means
- crystal diode
- diode socket
- 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
- 239000013078 crystal Substances 0.000 title description 21
- 239000004020 conductor Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
- H03D9/06—Transference of modulation using distributed inductance and capacitance
- H03D9/0608—Transference of modulation using distributed inductance and capacitance by means of diodes
- H03D9/0616—Transference of modulation using distributed inductance and capacitance by means of diodes mounted in a hollow waveguide
Definitions
- This invention relates to microwave radiation, and particularly to the construction of those components which perform the modulating or mixing function in a high frequency wave guide assembly.
- a crystal composed of a material which lends itself to the accomplishment of the heterodyning function entering into the process of extracting a lower frequency band of signal energy from a carrier wave of much higher frequency.
- the invention is characterized by the provision of quickly attachable and readily removable means for firmly holding such a crystalline element in good electrical contact with the terminal ,of a conductor leading from the wave guide to an I. F. amplifier or other point of utilization of the heterodyned output.
- a feature of the construction is the use of parts which do not require threading or screwing operations for insertion or removal, and which are self-captivating without reliance upon chains or similar appendages awkward to manipulate.
- Fig. 1 is an elevation view of a radiant energy transmitting wave guide structure of a type to which the invention is applicable; 7
- Fig. 2 is a longitudinal sectional view of one end of the wave guide structure of Fig. 1 showing an embodiment of the invention.
- Fig. 3 is a top plan view of the assembly of Fig. 2.
- reference character 11 designates a microwave guiding conduit having at its outer end a coupling flange 12 for engagement with an antenna feed conduit (not shown) adapted to cooperate with a conventional reflector element (also not shown) for the radiation of high frequency radiant energy.
- a transmitting oscillator assembly including a klystron 13, a surrounding heat controlling oven 14, and a coaxial transducer 15 connecting the klystron generating cavity with the longitudinal wave guide 11.
- a second resonant cavity structure 17 constituting a second frequency control cooperating with the principal wave guide section 11 and cooperating with the crystal mixer or modulation assembly located near the inner end of the wave guide 11 and constituting the subject matter of the present invention.
- the mixer assembly includes a crystal element 21 of cylindrical contour and terminating in a smaller cylindrical portion 22 adapted to enter within and to be frictionally and resiliently grasped by a plurality of resilient metallic fingers 23 extending upwardly from a metallic conducting element 24 having at its lower end a terminal formation 25 adapted to receive the end of a current-conducting wire or cable by which signal-carrying energy is supplied from the crystal 2,834,884 Patented May 13, 1958 ice 21 and the wave guide 11.
- This conductor 24 is in alignment with the longitudinal axis of the crystal 21 and is retained in such alignment by the surrounding assembly including an inner guide bushing 27 fitting within an orifice formed in the cylindrical wall of the wave guide 11 in alignment with a second orifice adapted to receive the crystal 21.
- the bushing 27 is retained in its orifice by interengagement with a shoulder formed internally of the outer cylindrical casing 29, which casing is thermally united to the wall of the wave guide 11 along the outer circular shoulder 31.
- the casing 29 has a transversely extending partition 33 spaced from bushing 27 by an insulating element 30, the part 33 serving as an abutment for flange 34 on conductor 24.
- a dielectric spacer 36 is retained in position by a circular retaining spring 37 fitting within a circular groove 38 formed on the inner cylindrical surface of the casing 29. Other insulation 38a surrounds flange 34.
- the means for retaining the crystal 21 in operative engagement with the fingers 23 of the conducting element 24 includes a bifurcated metallic cap having its longitudinally extending portions 41 and 42 in registry with diametrically opposite portions of a circular groove 43 extending about the periphery of a metallic bushing 44 whose central bore receives the crystal 21 and whose inner reduced end 45 fits within and is thermally united to the upper orifice previously referred to.
- the cap has an additional portion of circular contour uniting the previously described portion with a crystal engaging upper portion resting on the end surface of the crystal and, by reason of the resiliency of the metal, causing a retaining pressure to be exerted along the axis of the crystal, thus insuring its continuing conductive relationship with the fingers 23.
- the outer ends of the fingers 41 and 42 have inwardly turning portions 47 and 48 of suflicient extent to serve as limiting elements when the cap is withdrawn laterally of the bushing 44 a sufiicient distance to free the upper end of the cap from engagement with the upper end of the crystal.
- the crystal 21 is free to be withdrawn from the assembly for inspection or replacement by a counterpart.
- the cap while Withdrawn, cannot actually escape from the assembly in view of the retaining action of the toe elements 47 and 48.
- the assembly is maintained intact during a crystal withdrawing and replacing operation and without the necessity of resorting to retention chains or other cumbersome and obstiucting devices.
- the wave guide assembly of Fig. 1 may be supported upon a panel or bracket (not shown) by inserting the cylinder 29 into an opening in such panel or bracket, and clamping the cylinder thereto by means of clamping nuts 51 and 52. These nuts may then be secured by tightening lock washers 53 and 54. All these parts are threaded upon the threaded exterior of cylinder 29.
- This invention may be applied to either a transmitting or receiving wave guide, or to any equivalent structure to which energy pickup by crystal means is desirable.
- the invention in any of its applications, is not limited to the particular details of construction, materials and processes described, as many equivalents will suggest themselves to those skilled in the art. It is, accordingly, desired that the appended claims be given a broad interpretation commensurate with the scope of the invention within the art.
- the improvement comprising first and second spaced bushings secured to said wave guiding structure, said bushings having aligned central apertures therein communicating with the interior of said wave guiding structure, a con- 3; q ounted. i h nh eamr u e f.
- said conductor terminating in resilient gripping elements, a crystal element positioned in the aperture of said first .bushing and projecting within said wave guiding structure, said crystal elementhaving a portion thereof engagedby-said gripping element's establishing an electrical juncture, said firstbushing having a peripheral groove therein, a slidable member having a pair of spaced parallel fingers carrying a resilient element, said fingers cooperating with saidperipheral groove whereby said resilient element may be slidably positioned over the aperture in said first bushing to bear upon the exposed end of said crystal element, said parallel fingers being of suflicient length to permit said resilient element to be displaced entirely clear of said aperture, and means 4 ecur o. firifiasem. t l ads. hereqi. o. pr v t separation of said slidable mernber from said first bushing.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Constitution Of High-Frequency Heating (AREA)
Description
y 3 1958 c. P. DOME'NICHINI ETAL 2,834,884
WAVE GUIDE WITH CRYSTAL mom: SOCKET HAVING CAPTIVE CLAMPING MEANS Filed April 8. 1954 /NVENTO/25 CARLO R DOMEN/CH/N/ JOSEPH BA/(U o lvsv United States Patent WAVE GUIDE WITH CRYSTAL DIODE SOCKET HAVING CAPTIVE CLAMPING MEANS Carlo P. Domenichini, Lexington, and Joseph Bakura,
Watertown, Mass., assignors to Raytheon Manufacturing Company, Waltham, Mass, a corporation of Delaware Application April 8, 1954, Serial No. 421,721
1 Claim. (Cl. 250-31) This invention relates to microwave radiation, and particularly to the construction of those components which perform the modulating or mixing function in a high frequency wave guide assembly. For such purpose, it is customary to employ a crystal composed of a material which lends itself to the accomplishment of the heterodyning function entering into the process of extracting a lower frequency band of signal energy from a carrier wave of much higher frequency.
The invention is characterized by the provision of quickly attachable and readily removable means for firmly holding such a crystalline element in good electrical contact with the terminal ,of a conductor leading from the wave guide to an I. F. amplifier or other point of utilization of the heterodyned output. A feature of the construction is the use of parts which do not require threading or screwing operations for insertion or removal, and which are self-captivating without reliance upon chains or similar appendages awkward to manipulate.
These and other characteristics of the invention will be better understood upon reference to the following description of the embodiment of, the invention illustrated in the accompanying drawings wherein:
Fig. 1 is an elevation view of a radiant energy transmitting wave guide structure of a type to which the invention is applicable; 7
Fig. 2 is a longitudinal sectional view of one end of the wave guide structure of Fig. 1 showing an embodiment of the invention; and
Fig. 3 is a top plan view of the assembly of Fig. 2.
In these drawings, reference character 11 designates a microwave guiding conduit having at its outer end a coupling flange 12 for engagement with an antenna feed conduit (not shown) adapted to cooperate with a conventional reflector element (also not shown) for the radiation of high frequency radiant energy. Intermediate the ends of the wave guide 11 there is disposed a transmitting oscillator assembly including a klystron 13, a surrounding heat controlling oven 14, and a coaxial transducer 15 connecting the klystron generating cavity with the longitudinal wave guide 11. Also intermediate the ends of the wave guide 11 there is disposed a second resonant cavity structure 17 constituting a second frequency control cooperating with the principal wave guide section 11 and cooperating with the crystal mixer or modulation assembly located near the inner end of the wave guide 11 and constituting the subject matter of the present invention.
As shown best in Figs. 2 and'3, the mixer assembly includes a crystal element 21 of cylindrical contour and terminating in a smaller cylindrical portion 22 adapted to enter within and to be frictionally and resiliently grasped by a plurality of resilient metallic fingers 23 extending upwardly from a metallic conducting element 24 having at its lower end a terminal formation 25 adapted to receive the end of a current-conducting wire or cable by which signal-carrying energy is supplied from the crystal 2,834,884 Patented May 13, 1958 ice 21 and the wave guide 11. This conductor 24 is in alignment with the longitudinal axis of the crystal 21 and is retained in such alignment by the surrounding assembly including an inner guide bushing 27 fitting within an orifice formed in the cylindrical wall of the wave guide 11 in alignment with a second orifice adapted to receive the crystal 21. The bushing 27 is retained in its orifice by interengagement with a shoulder formed internally of the outer cylindrical casing 29, which casing is thermally united to the wall of the wave guide 11 along the outer circular shoulder 31. The casing 29 has a transversely extending partition 33 spaced from bushing 27 by an insulating element 30, the part 33 serving as an abutment for flange 34 on conductor 24. A dielectric spacer 36 is retained in position by a circular retaining spring 37 fitting within a circular groove 38 formed on the inner cylindrical surface of the casing 29. Other insulation 38a surrounds flange 34.
The means for retaining the crystal 21 in operative engagement with the fingers 23 of the conducting element 24 includes a bifurcated metallic cap having its longitudinally extending portions 41 and 42 in registry with diametrically opposite portions of a circular groove 43 extending about the periphery of a metallic bushing 44 whose central bore receives the crystal 21 and whose inner reduced end 45 fits within and is thermally united to the upper orifice previously referred to. The cap has an additional portion of circular contour uniting the previously described portion with a crystal engaging upper portion resting on the end surface of the crystal and, by reason of the resiliency of the metal, causing a retaining pressure to be exerted along the axis of the crystal, thus insuring its continuing conductive relationship with the fingers 23. The outer ends of the fingers 41 and 42 have inwardly turning portions 47 and 48 of suflicient extent to serve as limiting elements when the cap is withdrawn laterally of the bushing 44 a sufiicient distance to free the upper end of the cap from engagement with the upper end of the crystal. When this has been done, the crystal 21 is free to be withdrawn from the assembly for inspection or replacement by a counterpart. During such an operation, the cap, while Withdrawn, cannot actually escape from the assembly in view of the retaining action of the toe elements 47 and 48. Thus, the assembly is maintained intact during a crystal withdrawing and replacing operation and without the necessity of resorting to retention chains or other cumbersome and obstiucting devices.
The wave guide assembly of Fig. 1 may be supported upon a panel or bracket (not shown) by inserting the cylinder 29 into an opening in such panel or bracket, and clamping the cylinder thereto by means of clamping nuts 51 and 52. These nuts may then be secured by tightening lock washers 53 and 54. All these parts are threaded upon the threaded exterior of cylinder 29.
This invention may be applied to either a transmitting or receiving wave guide, or to any equivalent structure to which energy pickup by crystal means is desirable. The invention, in any of its applications, is not limited to the particular details of construction, materials and processes described, as many equivalents will suggest themselves to those skilled in the art. It is, accordingly, desired that the appended claims be given a broad interpretation commensurate with the scope of the invention within the art.
What is claimed is:
In an electromagnetic wave energy guiding structure, the improvement comprising first and second spaced bushings secured to said wave guiding structure, said bushings having aligned central apertures therein communicating with the interior of said wave guiding structure, a con- 3; q ounted. i h nh eamr u e f. id s nd bu ing, said conductor terminating in resilient gripping elements, a crystal element positioned in the aperture of said first .bushing and projecting within said wave guiding structure, said crystal elementhaving a portion thereof engagedby-said gripping element's establishing an electrical juncture, said firstbushing having a peripheral groove therein, a slidable member having a pair of spaced parallel fingers carrying a resilient element, said fingers cooperating with saidperipheral groove whereby said resilient element may be slidably positioned over the aperture in said first bushing to bear upon the exposed end of said crystal element, said parallel fingers being of suflicient length to permit said resilient element to be displaced entirely clear of said aperture, and means 4 ecur o. firifiasem. t l ads. hereqi. o. pr v t separation of said slidable mernber from said first bushing.
References Cited in the file of this patent UNITED STATES, PATENTS 483,221 um et al. Sept. 27, 1 92 1,334,212 Becker et a1. Mar. 16, 1920 2,291,674 Alden Aug. 4, 1942 2,469,222 Atwood etal. May 3, 1949 2,544,842 Lawson Mar. 13, 1951 2,636,120 Brod et al; Apr. 21, 1953 2,642,494 Zaslavsky et a1. June 16, 1953 FOREIGN PATENTS 979,826 France Dec. 13, 1950
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US421721A US2834884A (en) | 1954-04-08 | 1954-04-08 | Wave guide with crystal diode socket having captive clamping means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US421721A US2834884A (en) | 1954-04-08 | 1954-04-08 | Wave guide with crystal diode socket having captive clamping means |
Publications (1)
Publication Number | Publication Date |
---|---|
US2834884A true US2834884A (en) | 1958-05-13 |
Family
ID=23671763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US421721A Expired - Lifetime US2834884A (en) | 1954-04-08 | 1954-04-08 | Wave guide with crystal diode socket having captive clamping means |
Country Status (1)
Country | Link |
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US (1) | US2834884A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2939005A (en) * | 1956-10-18 | 1960-05-31 | Joseph H Vogelman | Waveguide crystal assembly for broadband operations |
US3025395A (en) * | 1958-11-19 | 1962-03-13 | North American Aviation Inc | Resonant cavity type radio frequency converter |
US3074022A (en) * | 1955-10-11 | 1963-01-15 | Microwave Ass | Crystal rectifier tube |
US11336064B2 (en) * | 2019-08-09 | 2022-05-17 | Hirose Electric Co., Ltd. | Electrical connector assembly and electronic device comprising same |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US483221A (en) * | 1892-09-27 | Clevis | ||
US1334212A (en) * | 1917-08-13 | 1920-03-16 | John H Becker | Spark-plug |
US2291674A (en) * | 1940-09-03 | 1942-08-04 | Alden Milton | Terminal clip |
US2469222A (en) * | 1943-12-01 | 1949-05-03 | Rca Corp | Crystal rectifier converter |
US2544842A (en) * | 1943-06-23 | 1951-03-13 | James L Lawson | Overload protection of highfrequency receivers |
FR979826A (en) * | 1949-01-31 | 1951-05-04 | Protected pressure contact socket terminal | |
US2636120A (en) * | 1949-06-16 | 1953-04-21 | Bird Electronic Corp | Combined voltage divider and crystal cartridge assembly for highfrequency electricaldevices |
US2642494A (en) * | 1948-05-26 | 1953-06-16 | Sperry Corp | Mode suppressing coupling for cavity wavemeters |
-
1954
- 1954-04-08 US US421721A patent/US2834884A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US483221A (en) * | 1892-09-27 | Clevis | ||
US1334212A (en) * | 1917-08-13 | 1920-03-16 | John H Becker | Spark-plug |
US2291674A (en) * | 1940-09-03 | 1942-08-04 | Alden Milton | Terminal clip |
US2544842A (en) * | 1943-06-23 | 1951-03-13 | James L Lawson | Overload protection of highfrequency receivers |
US2469222A (en) * | 1943-12-01 | 1949-05-03 | Rca Corp | Crystal rectifier converter |
US2642494A (en) * | 1948-05-26 | 1953-06-16 | Sperry Corp | Mode suppressing coupling for cavity wavemeters |
FR979826A (en) * | 1949-01-31 | 1951-05-04 | Protected pressure contact socket terminal | |
US2636120A (en) * | 1949-06-16 | 1953-04-21 | Bird Electronic Corp | Combined voltage divider and crystal cartridge assembly for highfrequency electricaldevices |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3074022A (en) * | 1955-10-11 | 1963-01-15 | Microwave Ass | Crystal rectifier tube |
US2939005A (en) * | 1956-10-18 | 1960-05-31 | Joseph H Vogelman | Waveguide crystal assembly for broadband operations |
US3025395A (en) * | 1958-11-19 | 1962-03-13 | North American Aviation Inc | Resonant cavity type radio frequency converter |
US11336064B2 (en) * | 2019-08-09 | 2022-05-17 | Hirose Electric Co., Ltd. | Electrical connector assembly and electronic device comprising same |
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