[go: up one dir, main page]

US2877429A - High frequency wave translating device - Google Patents

High frequency wave translating device Download PDF

Info

Publication number
US2877429A
US2877429A US538886A US53888655A US2877429A US 2877429 A US2877429 A US 2877429A US 538886 A US538886 A US 538886A US 53888655 A US53888655 A US 53888655A US 2877429 A US2877429 A US 2877429A
Authority
US
United States
Prior art keywords
slot
outer conductors
elongated
wave
high frequency
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
Application number
US538886A
Inventor
Donald J Sommers
William J Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lockheed Martin Corp
Original Assignee
Sanders Associates Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanders Associates Inc filed Critical Sanders Associates Inc
Priority to US538886A priority Critical patent/US2877429A/en
Application granted granted Critical
Publication of US2877429A publication Critical patent/US2877429A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines

Definitions

  • the invention relates to freq uency wave translating device s for propagatinghigh frequency energy from one transmission line to another or from atransmission line to space. More particularly, the inven'tion relates tohigh frequencytransmission lines and antennas.
  • a further object of the invention is to provide animproved high frequency wave translating device providing increased radiation efiiciency i o
  • a further objectof the invention is to provide an improved high frequency slot'antenna coupled to sandwich line.
  • Still another object of the invention is to provide an improved coupling device between sandwich line and wave guide line.
  • a high frequency wavetranslating devicle comprising a pair of elongated, outer conductors providing ground planes.
  • An elongated, inner conductor is disposed inparallel with and in insulated spaced relation between the outer conductors.
  • a resonant, elongatedsllot is; formed .transversely in one of the outer eonductors. The slot overlays 'pointed out in the appended claims.
  • Fig. 1 is an exploded view of a preferred embodiment of the invention
  • Fig. 2 is a plan view, partly in section, of the embodiment in Fig. l; I
  • Fig. 3 is a sectional view of the preferred embodiment taken along the lines 33 of Fig. 2;
  • Fig. 4 is a plan view of a modification of the embodiment in Fig. 1.
  • a high frequency wave translating device comprising a pair of elongated, outer conductors nect the outer conductors 10 19 and 11 providing ground planes.
  • Elongated, inner conductors 12 and 13 in direct contact with each other and electrically functioning as a single conductor are disposed in parallel with and fixedin insulated spaeed relation between the outer conductors by dielectric members 15 and 16.
  • a resonant, elongated slot '14 is formed in the outer conductor 10 intersecting an axis parallel with the inner conductor 12 as shown.
  • the inner conductors 12 and 13 have tapered portions 23 as shown for matching the impedance of the sandwich transmission line to the slot.
  • One of the rods 11 is disposed in the vicinity of each corne-r of the outer conductor as defined by the intersection of the-innerconductor and the slot.
  • -A wave guide transmission line 18 is connected to the outer conductor 10 with a propagation boundary adjacent each extremity of the slot 14 as shown in Fig. 2.
  • the guide 18 is mounted on the outer conductor 10 with, for example,
  • Fig. 4 differs from that represented by Figs. 13, inclusive, in that in Fig. 4 a conductor tab 24 extends from theouter conductor 11) into the slot 14 for tuning the slot and matching its impedance to that of the transmission line.
  • the outer conductors 1'0 and 11 provide boundary ground vicinity of the intersection between the s'lot14 and the inner conductors 12 and #13 substantially increasest'he radiation efiiciency of the slot 14. Inserting a conductive rod 17 in the vicinity 'of each corner in the outer conductor '10 as defined'by the intersection of the inner conductors 12 and 13 and the slot 14 increases the radiation eificiency to approximately 50 percent. Additional rods 17 inserted along the opposite edges of the slot 14 as shown produce an increased efficiency approaching 65 percent.
  • the device becomes a mode transducer in which the TEM mode of sandwich line is transformed into, for example, TE mode in the ,guide '18.
  • the enhanced radiation efficiency produced by the insertion of the conductive rods 17 clearly establishes the re-enforcement of the forward energy propagated by the slot with energy which tends to be radiated backwardly by the slot. This implies further that the backward radiating energy is reflected and radiated from the slot in phase with the forward propagating energy.
  • the tab 24 provides a means for varying the effective electrical length of the slot 14 for the dual purpose of tuning the slot to its resonant frequency and matching the impedance of the slot to the line. It will be apparent that where the device is utilized to translate energy from the sandwich transmission line to space, for example, as when used as an antenna, the impedance of the slot difiers from the condition where translation to wave guide transmission line is desired. Similarly, the resonance characteristics change and must be compensated.
  • the insertion of the conductive rods 17 greatly enhances the radiation efliciency of a resonant slot in sandwich line.
  • the present invention greatly enhances the application of sandwich line to antennas and transmission lines, particularly wave guides.
  • the slot as shown in Fig. 1, is .900 inch long and .060
  • the inner conductor is .165 inch wide and the outer conductors not less than .35 inch wide.
  • the conductive rods 17 are .060 inch in diameter and spaced longitudinally and transversely .250 inch apart.
  • the slot 14 and inner conductors 12 and 13 are centered relative to the four conductive rods in the vicinity of the intersection of the slot 14 and the inner conductors 12 and 13.
  • the boundary defining surfaces on the guide are .900 inch apart and .400 inch long.
  • the wave guide 18 as used herein silver plated and the conductors of the sandwich transmission line are .00135 inch thick and silver plated to approximately a depth of .0001 inch.
  • the dielectric members 15 and 16 are .067 inch thick and formed from Teflon Fibreglas as manufactured by Continental Dimond Fiber Company.
  • a pair of elongated, outer conductors providing ground planes; an elongated, inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being electrically an integral number of half-wave lengths long and less than a halfwave length wide at the highest operating frequency of said device; and conductive means coupling said outer conductors in the vicinity of said intersection to enable increased coupling of high-frequency energy from between said inner and outer conductors through said slot.
  • a high-frequency wave translating device comprising: a pair of elongated, outer conductors providing ground planes; an elongated inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being an integral number of half-wave lengths long and less than a half-wave length wide at the highest-operating frequency-of said device; and a plurality of conductive rods connecting said outer conductors adjacent opposite sides of said slot with at least one of said rods in the vicinity of each corner in the outer conductor defined by the intersection of an axis parallel with said inner conductor and said slot to enable increased coupling of high-frequency energy from between said inner and outer conductors through said slot.
  • a high-frequency wave translating device comprising: a pair of elongated, outer conductors providing ground planes; an, elongated inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being an integral number of half-wave lengths long and less than a half-wave length wide at the highest operating frequency of said device; a conductor tab extending from said outer conductor into said slot'for tuning said slot and matching the impedance'of said slot to said line; and conductive means'coupling said outer conductors in the vicinity of said intersection to enable increased coupling of highfrequency energy from between said inner and outer conductors through said slot.
  • a high frequency wave translating device comprising: a pair of elongated, outer conductors providing ground planes; an elongated inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being an integral number of halfwave lengths long and less than a half-wave length wide at the highest operating frequency of said device; conductive means coupling said outer conductors'in the vicinity of said intersection; and a wave guide transmission between said inner and outer conductors through said slot.
  • a high-frequency wave'translating device comprising: an elongated, planar, inner conductor; a pair of elongated, planar, "outer conductors providing ground planes and disposed in parallel with and in insulated spaced relation with respect to opposite sides of said inner conductor,'one of said outer conductors having an opening therethrough intersecting an axis parallel with and overlaying said inner conductor; and conductive means coupling said outer conductors in the vicinity of said intersection to enable increased coupling of high-frequency energy from betweensaid inner and outer conductors through said slot.

Landscapes

  • Waveguide Aerials (AREA)

Description

March 1959 D. J. SOMMERS arm, 2,877,429
HIGH FREQUENCY WAVE TRANSLATING DEVICE Filed Oct. 6, 1955 Donald J. Sommers INVENTOR.
2? V Fig. William J. Wilson United statesPfltn HIGH FREQUENCY WEAYEITRANSLATING DEVICE -lionald J. Sommers, Brookline, ii 'd williain 1 W Nashua, N. H., assignors, by niesne assignments, to Sanders Associates, Inc., Nashua, N; H; a corporation of Delaware Application October 6, S e'fial'N'o. 553 3386 Claims. (Cl. 333- 24) The invention relates to freq uency wave translating device s for propagatinghigh frequency energy from one transmission line to another or from atransmission line to space. More particularly, the inven'tion relates tohigh frequencytransmission lines and antennas.
, Inthe prior art it is common practice to utilize a slot radiator in such wave guide transmission Iinesfo'r radiating energy into space or translating energy from one type of wave guide to another. In flat-strip transmission lines utilizing an elongated, inner conductor disposed in parallel with and in insulated spaced relation between two outer conductors, resonant slots formedin one of the outer conductors have been found to, provide inadequate radiation for practical purposes. or One type of fiat-strip transmission line is commonly ,-termed sandwich line and this line will be the one considered hereinafter.
. It is therefore an object of the invention to provide an improved high frequency waveQtran slatin'g device.
A further object of the invention is to provide animproved high frequency wave translating device providing increased radiation efiiciency i o A further objectof the invention is to provide an improved high frequency slot'antenna coupled to sandwich line.
Still another object of the invention is to provide an improved coupling device between sandwich line and wave guide line. o, t: J
In accordance with theinvention there isprovide'd a high frequency wavetranslating devicle comprising a pair of elongated, outer conductors providing ground planes.
An elongated, inner conductor is disposed inparallel with and in insulated spaced relation between the outer conductors. A resonant, elongatedsllot is; formed .transversely in one of the outer eonductors. The slot overlays 'pointed out in the appended claims.
Referring now to the drawings:
Fig. 1 is an exploded view of a preferred embodiment of the invention;
Fig. 2 is a plan view, partly in section, of the embodiment in Fig. l; I
Fig. 3 is a sectional view of the preferred embodiment taken along the lines 33 of Fig. 2; and
Fig. 4 is a plan view of a modification of the embodiment in Fig. 1.
Detailed description Referring now more particularly to Figs. 1, 2 and 3,
, 2,877,429 Fatented Mar. 10,
there is represented a high frequency wave translating device comprising a pair of elongated, outer conductors nect the outer conductors 10 19 and 11 providing ground planes. Elongated, inner conductors 12 and 13 in direct contact with each other and electrically functioning as a single conductor are disposed in parallel with and fixedin insulated spaeed relation between the outer conductors by dielectric members 15 and 16. A resonant, elongated slot '14 is formed in the outer conductor 10 intersecting an axis parallel with the inner conductor 12 as shown. The inner conductors 12 and 13 have tapered portions 23 as shown for matching the impedance of the sandwich transmission line to the slot. Aplurality of conductive rods 17 conand 11 through the dielectric members 15 and 16 adjacent the opposite sides ofthe slot 14. One of the rods 11 is disposed in the vicinity of each corne-r of the outer conductor as defined by the intersection of the-innerconductor and the slot. -A wave guide transmission line 18 is connected to the outer conductor 10 with a propagation boundary adjacent each extremity of the slot 14 as shown in Fig. 2. The guide 18 is mounted on the outer conductor 10 with, for example,
screws 19 which are inserted through screw holes 21 in a flange 22 of the guide 18 into holes 20 in the sandwich transmission line. o o
r The embodiment shown in Fig. 4 differs from that represented by Figs. 13, inclusive, in that in Fig. 4 a conductor tab 24 extends from theouter conductor 11) into the slot 14 for tuning the slot and matching its impedance to that of the transmission line.
Operation Co nsidering now the operation of the wave translating device just described and referring to Figs. 1, 2 and 3,
energy is propagated along the sandwich transmission line toward the slot '14 in the wellknown TEM mode.
The outer conductors 1'0 and 11 provide boundary ground vicinity of the intersection between the s'lot14 and the inner conductors 12 and #13 substantially increasest'he radiation efiiciency of the slot 14. Inserting a conductive rod 17 in the vicinity 'of each corner in the outer conductor '10 as defined'by the intersection of the inner conductors 12 and 13 and the slot 14 increases the radiation eificiency to approximately 50 percent. Additional rods 17 inserted along the opposite edges of the slot 14 as shown produce an increased efficiency approaching 65 percent. By connecting the wave guide 18 to the sandwich transmission line as described above, conventional modes of propagation within the guide are excited. In the embodiment shown herein in which a rectangular wave guide is utilized as an example,'the device becomes a mode transducer in which the TEM mode of sandwich line is transformed into, for example, TE mode in the ,guide '18. The enhanced radiation efficiency produced by the insertion of the conductive rods 17 clearly establishes the re-enforcement of the forward energy propagated by the slot with energy which tends to be radiated backwardly by the slot. This implies further that the backward radiating energy is reflected and radiated from the slot in phase with the forward propagating energy.
In the embodiment of Fig. 4 the tab 24 provides a means for varying the effective electrical length of the slot 14 for the dual purpose of tuning the slot to its resonant frequency and matching the impedance of the slot to the line. It will be apparent that where the device is utilized to translate energy from the sandwich transmission line to space, for example, as when used as an antenna, the impedance of the slot difiers from the condition where translation to wave guide transmission line is desired. Similarly, the resonance characteristics change and must be compensated.
It will be apparent from the foregoing described operation that the insertion of the conductive rods 17 greatly enhances the radiation efliciency of a resonant slot in sandwich line. The present invention greatly enhances the application of sandwich line to antennas and transmission lines, particularly wave guides.
While applicant does not intend to be limited to any particular dimensions in the embodiment of the invention just described, there follows a set of dimensions for the more important components which have been found to be particularly suitable at a frequency of 9,375 megacycles.
The slot, as shown in Fig. 1, is .900 inch long and .060
inch wide. The inner conductor is .165 inch wide and the outer conductors not less than .35 inch wide. The conductive rods 17 are .060 inch in diameter and spaced longitudinally and transversely .250 inch apart. The slot 14 and inner conductors 12 and 13 are centered relative to the four conductive rods in the vicinity of the intersection of the slot 14 and the inner conductors 12 and 13. The boundary defining surfaces on the guide are .900 inch apart and .400 inch long. The wave guide 18 as used herein silver plated and the conductors of the sandwich transmission line are .00135 inch thick and silver plated to approximately a depth of .0001 inch. The dielectric members 15 and 16 are .067 inch thick and formed from Teflon Fibreglas as manufactured by Continental Dimond Fiber Company.
While there have been described what are at present considered to be the preferred embodiments of this invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the invention, and it is, therefore,
' aimed in the appended claims to cover all such changes ing: a pair of elongated, outer conductors providing ground planes; an elongated, inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being electrically an integral number of half-wave lengths long and less than a halfwave length wide at the highest operating frequency of said device; and conductive means coupling said outer conductors in the vicinity of said intersection to enable increased coupling of high-frequency energy from between said inner and outer conductors through said slot.
2. A high-frequency wave translating device, comprising: a pair of elongated, outer conductors providing ground planes; an elongated inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being an integral number of half-wave lengths long and less than a half-wave length wide at the highest-operating frequency-of said device; and a plurality of conductive rods connecting said outer conductors adjacent opposite sides of said slot with at least one of said rods in the vicinity of each corner in the outer conductor defined by the intersection of an axis parallel with said inner conductor and said slot to enable increased coupling of high-frequency energy from between said inner and outer conductors through said slot.
3. A high-frequency wave translating device, comprising: a pair of elongated, outer conductors providing ground planes; an, elongated inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being an integral number of half-wave lengths long and less than a half-wave length wide at the highest operating frequency of said device; a conductor tab extending from said outer conductor into said slot'for tuning said slot and matching the impedance'of said slot to said line; and conductive means'coupling said outer conductors in the vicinity of said intersection to enable increased coupling of highfrequency energy from between said inner and outer conductors through said slot.
4. A high frequency wave translating device, comprising: a pair of elongated, outer conductors providing ground planes; an elongated inner conductor disposed in parallel with and in insulated spaced relation between said outer conductors; a resonant, elongated slot formed transversely in one of said outer conductors overlaying said inner conductor and intersecting an axis parallel with said inner conductor, said slot being an integral number of halfwave lengths long and less than a half-wave length wide at the highest operating frequency of said device; conductive means coupling said outer conductors'in the vicinity of said intersection; and a wave guide transmission between said inner and outer conductors through said slot.
5. A high-frequency wave'translating device, comprising: an elongated, planar, inner conductor; a pair of elongated, planar, "outer conductors providing ground planes and disposed in parallel with and in insulated spaced relation with respect to opposite sides of said inner conductor,'one of said outer conductors having an opening therethrough intersecting an axis parallel with and overlaying said inner conductor; and conductive means coupling said outer conductors in the vicinity of said intersection to enable increased coupling of high-frequency energy from betweensaid inner and outer conductors through said slot.'
References Cited in the tile of this patent UNITED STATES PATENTS Clappr. Nov. 6, 1951 Englemann Oct. 6, 1953 OTHE REFERENCES Electrical Communication, December 1953, pages 283-286.
US538886A 1955-10-06 1955-10-06 High frequency wave translating device Expired - Lifetime US2877429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US538886A US2877429A (en) 1955-10-06 1955-10-06 High frequency wave translating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US538886A US2877429A (en) 1955-10-06 1955-10-06 High frequency wave translating device

Publications (1)

Publication Number Publication Date
US2877429A true US2877429A (en) 1959-03-10

Family

ID=24148831

Family Applications (1)

Application Number Title Priority Date Filing Date
US538886A Expired - Lifetime US2877429A (en) 1955-10-06 1955-10-06 High frequency wave translating device

Country Status (1)

Country Link
US (1) US2877429A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979676A (en) * 1957-10-30 1961-04-11 Research Corp Waveguide to microstrip transition structure
US3212030A (en) * 1960-12-20 1965-10-12 Trw Inc Variable delay line using electromagnetic energy coupling
FR2156641A1 (en) * 1971-10-14 1973-06-01 Siemens Ag Albis
FR2350706A1 (en) * 1976-05-03 1977-12-02 Raytheon Co IDENTIFIER RADAR ANTENNA KIT
US4156242A (en) * 1975-06-09 1979-05-22 The United States Of America As Represented By The Secretary Of The Navy Light-weight low-cost antenna element
FR2462787A1 (en) * 1979-07-27 1981-02-13 Thomson Csf Planar coupler for waveguide and HF line - is oriented at right angles to waveguide end and has two conductive layers on either side of dielectric
WO1984003394A1 (en) * 1983-02-23 1984-08-30 Hughes Aircraft Co Coaxial line to waveguide adapter
US4605915A (en) * 1984-07-09 1986-08-12 Cubic Corporation Stripline circuits isolated by adjacent decoupling strip portions
EP0249310A1 (en) * 1986-06-10 1987-12-16 Canadian Marconi Company Waveguide to stripline transition
WO1993022802A2 (en) * 1992-05-01 1993-11-11 Martin Marietta Corporation Waveguide to transmission line transition
WO1994002970A1 (en) * 1992-07-23 1994-02-03 Cambridge Computer Limited Rf waveguide signal transition apparatus
EP0597433A2 (en) * 1992-11-10 1994-05-18 Sony Corporation Polarization separator and wave-guide-microstrip line mode transformer for microwave apparatus
EP0684658A1 (en) * 1994-05-23 1995-11-29 Hughes Aircraft Company End launched microstrip or stripline to waveguide transition with cavity backed slot fed by T-shaped microstrip line or stripline
US5724049A (en) * 1994-05-23 1998-03-03 Hughes Electronics End launched microstrip or stripline to waveguide transition with cavity backed slot fed by offset microstrip line usable in a missile
US5770981A (en) * 1995-03-31 1998-06-23 Nec Corporation Composite microwave circuit module having a pseudo-waveguide structure
EP1928053A1 (en) 2006-11-30 2008-06-04 Hitachi, Ltd. Waveguide structure
US20080129408A1 (en) * 2006-11-30 2008-06-05 Hideyuki Nagaishi Millimeter waveband transceiver, radar and vehicle using the same
US20080303721A1 (en) * 2005-03-16 2008-12-11 Masahiko Oota Planar Antenna Module, Triple Plate Planar Array Antenna, and Triple Plate Feeder - Waveguide Converter
US20100085133A1 (en) * 2007-03-22 2010-04-08 Taketo Nomura Triplate line-to-waveguide transducer
US20140028413A1 (en) * 2010-11-29 2014-01-30 Yokowo Co., Ltd. Signal transmission medium and high frequency signal transmission medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574433A (en) * 1943-10-01 1951-11-06 Roger E Clapp System for directional interchange of energy between wave guides and free space
US2654842A (en) * 1951-07-21 1953-10-06 Fed Telecomm Lab Inc Radio frequency antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574433A (en) * 1943-10-01 1951-11-06 Roger E Clapp System for directional interchange of energy between wave guides and free space
US2654842A (en) * 1951-07-21 1953-10-06 Fed Telecomm Lab Inc Radio frequency antenna

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979676A (en) * 1957-10-30 1961-04-11 Research Corp Waveguide to microstrip transition structure
US3212030A (en) * 1960-12-20 1965-10-12 Trw Inc Variable delay line using electromagnetic energy coupling
FR2156641A1 (en) * 1971-10-14 1973-06-01 Siemens Ag Albis
US3786371A (en) * 1971-10-14 1974-01-15 Siemens Ag Albis Means for coupling a cavity resonator to a conductor circuit and/or a further cavity resonator
US4156242A (en) * 1975-06-09 1979-05-22 The United States Of America As Represented By The Secretary Of The Navy Light-weight low-cost antenna element
FR2350706A1 (en) * 1976-05-03 1977-12-02 Raytheon Co IDENTIFIER RADAR ANTENNA KIT
FR2462787A1 (en) * 1979-07-27 1981-02-13 Thomson Csf Planar coupler for waveguide and HF line - is oriented at right angles to waveguide end and has two conductive layers on either side of dielectric
WO1984003394A1 (en) * 1983-02-23 1984-08-30 Hughes Aircraft Co Coaxial line to waveguide adapter
US4605915A (en) * 1984-07-09 1986-08-12 Cubic Corporation Stripline circuits isolated by adjacent decoupling strip portions
EP0249310A1 (en) * 1986-06-10 1987-12-16 Canadian Marconi Company Waveguide to stripline transition
WO1993022802A2 (en) * 1992-05-01 1993-11-11 Martin Marietta Corporation Waveguide to transmission line transition
WO1993022802A3 (en) * 1992-05-01 1994-02-03 Martin Marietta Corp Waveguide to transmission line transition
US5867073A (en) * 1992-05-01 1999-02-02 Martin Marietta Corporation Waveguide to transmission line transition
WO1994002970A1 (en) * 1992-07-23 1994-02-03 Cambridge Computer Limited Rf waveguide signal transition apparatus
US6232849B1 (en) 1992-07-23 2001-05-15 Stephen John Flynn RF waveguide signal transition apparatus
US5801599A (en) * 1992-07-23 1998-09-01 Cambridge Industries Limited RF waveguide to microstrip board transition including means for preventing electromagnetic leakage into the microstrip board
EP0788183A3 (en) * 1992-11-10 1997-08-20 Sony Corp
US5384557A (en) * 1992-11-10 1995-01-24 Sony Corporation Polarization separator and waveguide-microstrip line mode transformer for microwave apparatus
EP0597433A3 (en) * 1992-11-10 1994-08-17 Sony Corp Polarization separator and wave-guide-microstrip line mode transformer for microwave apparatus.
EP0597433A2 (en) * 1992-11-10 1994-05-18 Sony Corporation Polarization separator and wave-guide-microstrip line mode transformer for microwave apparatus
EP0788183A2 (en) * 1992-11-10 1997-08-06 Sony Corporation Waveguide-microstrip line mode transformer for microwave apparatus
EP0684658A1 (en) * 1994-05-23 1995-11-29 Hughes Aircraft Company End launched microstrip or stripline to waveguide transition with cavity backed slot fed by T-shaped microstrip line or stripline
JP2672283B2 (en) 1994-05-23 1997-11-05 エイチイー・ホールディングス・インコーポレーテッド・ディービーエー・ヒューズ・エレクトロニクス Microstrip line-waveguide coupling and missile using the same
US5724049A (en) * 1994-05-23 1998-03-03 Hughes Electronics End launched microstrip or stripline to waveguide transition with cavity backed slot fed by offset microstrip line usable in a missile
US5770981A (en) * 1995-03-31 1998-06-23 Nec Corporation Composite microwave circuit module having a pseudo-waveguide structure
US20080303721A1 (en) * 2005-03-16 2008-12-11 Masahiko Oota Planar Antenna Module, Triple Plate Planar Array Antenna, and Triple Plate Feeder - Waveguide Converter
US8253511B2 (en) * 2005-03-16 2012-08-28 Hitachi Chemical Co., Ltd. Triple plate feeder—waveguide converter having a square resonance patch pattern
EP1928053A1 (en) 2006-11-30 2008-06-04 Hitachi, Ltd. Waveguide structure
US20080129409A1 (en) * 2006-11-30 2008-06-05 Hideyuki Nagaishi Waveguide structure
US7804443B2 (en) * 2006-11-30 2010-09-28 Hitachi, Ltd. Millimeter waveband transceiver, radar and vehicle using the same
US7884682B2 (en) 2006-11-30 2011-02-08 Hitachi, Ltd. Waveguide to microstrip transducer having a ridge waveguide and an impedance matching box
US20080129408A1 (en) * 2006-11-30 2008-06-05 Hideyuki Nagaishi Millimeter waveband transceiver, radar and vehicle using the same
US20100085133A1 (en) * 2007-03-22 2010-04-08 Taketo Nomura Triplate line-to-waveguide transducer
US8188805B2 (en) * 2007-03-22 2012-05-29 Hitachi Chemical Co., Ltd. Triplate line-to-waveguide transducer having spacer dimensions which are larger than waveguide dimensions
US20140028413A1 (en) * 2010-11-29 2014-01-30 Yokowo Co., Ltd. Signal transmission medium and high frequency signal transmission medium
US9335344B2 (en) * 2010-11-29 2016-05-10 Yokowo Co., Ltd. Signal transmission medium conversion mechanism including a probe tip and a flexible transmission line

Similar Documents

Publication Publication Date Title
US2877429A (en) High frequency wave translating device
US2556094A (en) High-frequency apparatus
US2812501A (en) Transmission line
US3265995A (en) Transmission line to waveguide junction
US3135935A (en) Transmission line and method of making
US4170013A (en) Stripline patch antenna
US3786372A (en) Broadband high frequency balun
US4370659A (en) Antenna
US3732508A (en) Strip line to waveguide transition
US2914766A (en) Three conductor planar antenna
US2926317A (en) Transmission line
US4463324A (en) Miniature coaxial line to waveguide transition
US4571473A (en) Microwave applicator for frozen ground
US2412320A (en) Antenna system
EP0217426A2 (en) Microstrip antenna device
US2921276A (en) Microwave circuits
US2425336A (en) Microwave directive antenna
US2691731A (en) Feed horn
US3340534A (en) Elliptically or circularly polarized antenna
US2408032A (en) Coupling arrangement
US3928854A (en) V-type directional antenna
US2830276A (en) Microwave rotary joint
US3509572A (en) Waveguide fed frequency independent antenna
KR100198687B1 (en) Array antenna with forced excitation
GB2236625A (en) Monopole antenna.