EP0073165B1 - Mikrowellenschalter - Google Patents

Mikrowellenschalter Download PDF

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Publication number
EP0073165B1
EP0073165B1 EP82401514A EP82401514A EP0073165B1 EP 0073165 B1 EP0073165 B1 EP 0073165B1 EP 82401514 A EP82401514 A EP 82401514A EP 82401514 A EP82401514 A EP 82401514A EP 0073165 B1 EP0073165 B1 EP 0073165B1
Authority
EP
European Patent Office
Prior art keywords
switch
guide
waveguide
diode
switch according
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
Application number
EP82401514A
Other languages
English (en)
French (fr)
Other versions
EP0073165A1 (de
Inventor
Michel Baril
Gilles Sillard
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to AT82401514T priority Critical patent/ATE26506T1/de
Publication of EP0073165A1 publication Critical patent/EP0073165A1/de
Application granted granted Critical
Publication of EP0073165B1 publication Critical patent/EP0073165B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/10—Auxiliary devices for switching or interrupting
    • H01P1/15—Auxiliary devices for switching or interrupting by semiconductor devices

Definitions

  • the invention relates to an electromagnetic wave switch made from a semiconductor placed in a waveguide and operating for millimeter waves.
  • the aim of such a device is to transmit certain microwave signals without loss of power and to attenuate certain others.
  • FIG. 1 represents a cross section of a rectangular waveguide 1 comprising a PIN diode 2 placed on one of the internal faces 3 of the guide.
  • the bias voltage V of the diode is introduced by a coaxial line 4, which is connected to the housing of the diode by a microwave trap 5 and by a metal bar 6, the trap being separated from the coaxial line by a piece of insulation. 50.
  • microwave switch close to the previous one, and comprising a PIN diode. It operates in mode 2, that is to say that the PIN diode and its circuit have a series resonant circuit when the diode is blocked and a parallel resonant circuit when it conducts.
  • an electromagnetic wave switch comprising a rectangular waveguide itself comprising a step providing a ridged space, of determined volume, in which a PIN diode is arranged, the waveguide is constructed in two parts, one being a flat metal plate and the other being a U-shaped metal plate comprising the step, the union of the two forming the cavity of the waveguide, and these two parts being isolated by a layer of insulating material, the two metallized faces of the diode being respectively welded one to the flat metal plate, and the other to the step of the waveguide.
  • FIG. 2 represents a switch according to the invention, seen in section along a cross section. It is produced from a rectangular waveguide 7, constructed in two parts, one being a flat metal plate 70 and the other being a metal plate 72 in the shape of a U, the union of the two producing the cavity of the waveguide. They are insulated from each other by a layer of insulating material 71.
  • the part 72 has a step 73 in its central part, providing in the guide a space called ridged according to English terminology, space in which is concentrated the electric field.
  • a semiconductor bar 10 with high breakdown voltage - several hundred volts - and low thermal resistance, this bar having a volume identical to the volume defined by the wrinkled space.
  • the cathode 101 of the diode 10 is connected to the step 73 while its anode 102 is connected to the other part 70.
  • a voltage ⁇ V is applied between these two parts.
  • the guide when the diode is blocked, the guide, on the one hand, can be considered to be filled with a dielectric material of high dielectric constant ⁇ ( ⁇ ⁇ 12 for a PIN diode) and on the other hand to dimensions such as propagation of a millimeter wave is possible. In this case, such a wave is transmitted through the switch.
  • a conventional PIN diode is used, the dimensions of which are adjusted to those of the guide and the two faces of which are metallized. To ensure good heat dissipation, the two metallized faces of the diode are welded to the walls of the guide.
  • FIG. 3 represents a switch according to the invention, according to a perspective view.
  • the elements identical to those of FIG. 2 provide the same functions and have the same references.
  • the transitions are ensured by bevels 9, or tapers in Anglo-Saxon terms, which are equivalent to transformers adapting the discontinuities.
  • the dimension of the PIN diode 10, L 5 along the longitudinal axis A of the waveguide, is a multiple of a quarter of the guided wavelength ⁇ g at the central frequency of the operating band.
  • this dimension is equal to 3 A g / 4 rather than A g / 4, since the dimension of the PIN diodes commonly used is of the order of 0.6 to 0.7 mm.
  • Figure 4 is a view along a longitudinal section of the waveguide 7, having the same references as the two previous figures. The dimensions, along the axis ⁇ , of the PIN diode 10 and the bevels 9 are also carried there.
  • FIG. 5 a particular embodiment of a switch according to the invention.
  • the two parts 70 and 72, separated by the insulator 71, are screwed together by nylon screws 15 for example.
  • These two traps 18, the depth d of which is a multiple of ⁇ / 4 bring an open circuit at the level of the insulating plate, therefore bring a short-circuit to the edges 19 of the waveguide.
  • This electric short-circuit makes it possible to achieve continuity from the microwave point of view while being an insulator from the continuous point of view.
  • This device can be used in all systems where it is necessary to attenuate or switch an electromagnetic signal. Thus it can either protect a receiver by acting as a controlled protective circuit, or be associated with a switch to switch a signal in a determined channel.
  • the switch 20 is on, the other 21 being blocked, an incoming signal through channel 22 is directed towards the switch 20 and vice versa when the switch is blocked, the other 21 being on.

Landscapes

  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Transceivers (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Electronic Switches (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Push-Button Switches (AREA)
  • Control Of Combustion (AREA)

Claims (5)

1. Schalter für elektromagnetische Wellen, mit einem rechtwinkligen Wellenleiter (7), der seinerseits einen Absatz (73) umfaßt, worin ein Firstraum von bestimmtem Volumen gebildet ist, in welchem eine PIN-Diode (10) angeordnet ist, dadurch gekennzeichnet, daß der Wellenleiter (7), dessen Abmessungen die Ausbreitung einer Millimeterwelle gestatten, aus zwei Teilen (70 und 72) aufgebaut ist, wovon der eine eine ebene Metallplatte (70) und der andere eine U-förmige, den Absatz (73) aufweisende Metallplatte (72) ist, wobei die Vereinigung dieser beiden den Hohlraum des Wellenleiters bildet und wobei diese zwei Teile durch eine Schicht aus Isoliermaterial (71) isoliert sind, während von den beiden metallisierten Flächen der Diode (10) die eine an die ebene Metallplatte (70) und die andere an den Absatz (73) des Leiters (7) angelötet ist.
2. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß Schrägen (9) oder Impedanztransformatoren die Übergänge zwischen dem Wellenleiter (7) und dem Absatz (73) gewährleisten.
3. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die Abmessung der PIN-Diode (10) entlang der Längsachse (A) ein Vielfaches eines Viertels der Wellenlänge (λg) bei der Mittenfrequenz des Betriebsbandes ist.
4. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß der den Absatz (73) aufweisende Teil (72) des Leiters auf der Außenseite des eigentlichen Leiters zwei Rillen (18) beiderseits der Achse (A) in einem bestimmten Abstand (1) von dem Leiter aufweist, wobei diese beiden Rillen mit einer bestimmten Tiefe (d) und über die gesamte Länge des Schalters angebracht sind und so als Höchstfrequenzfallen wirken.
5. Schalter nach Anspruch 4, dadurch gekennzeichnet, daß der Abstand (1) und die Tiefe (d) Vielfache eines Viertels der Wellenlänge (λ) bei der Mittenfrequenz des Betriebsbandes sind.
EP82401514A 1981-08-21 1982-08-10 Mikrowellenschalter Expired EP0073165B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401514T ATE26506T1 (de) 1981-08-21 1982-08-10 Mikrowellenschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8116120A FR2511812A1 (fr) 1981-08-21 1981-08-21 Commutateur d'ondes electromagnetiques
FR8116120 1981-08-21

Publications (2)

Publication Number Publication Date
EP0073165A1 EP0073165A1 (de) 1983-03-02
EP0073165B1 true EP0073165B1 (de) 1987-04-08

Family

ID=9261619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401514A Expired EP0073165B1 (de) 1981-08-21 1982-08-10 Mikrowellenschalter

Country Status (7)

Country Link
US (1) US4507632A (de)
EP (1) EP0073165B1 (de)
JP (1) JPS5840901A (de)
AT (1) ATE26506T1 (de)
CA (1) CA1197578A (de)
DE (1) DE3276039D1 (de)
FR (1) FR2511812A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126811B1 (de) * 1983-05-20 1988-08-17 The Marconi Company Limited Mikrowellenschalter
FR2552935B1 (fr) * 1983-09-30 1986-03-21 Thomson Csf Perfectionnement aux commutateurs d'ondes electromagnetiques millimetriques
US4613839A (en) * 1984-08-09 1986-09-23 Itt Corporation Machined waveguide
FR2570904B1 (fr) * 1984-09-25 1987-01-16 Thomson Csf Dispositif de protection pour sortie d'emetteur
DE3534980A1 (de) * 1985-10-01 1987-04-02 Licentia Gmbh Hohlleiterschalter
WO2019054739A1 (en) 2017-09-15 2019-03-21 Samsung Electronics Co., Ltd. OPTICALLY CONTROLLED SWITCH

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470805A (en) * 1941-09-12 1949-05-24 Emi Ltd Means for preventing or reducing the escape of high-frequency energy
SE125124C1 (de) * 1943-06-11 1949-06-07
US2951217A (en) * 1956-12-31 1960-08-30 Hughes Aircraft Co Waveguide motional joint
GB902128A (en) * 1959-08-19 1962-07-25 Decca Ltd Improvements in or relating to waveguide couplings
US3050702A (en) * 1960-12-28 1962-08-21 Bell Telephone Labor Inc Capacitively loaded waveguide
US3346825A (en) * 1965-06-28 1967-10-10 Ass Elect Ind Waveguide switch with semiconductor in thermal contact with waveguide walls
US3553610A (en) * 1969-05-23 1971-01-05 Bell Telephone Labor Inc Diode mount having integral resonant circuit
GB1318049A (en) * 1970-07-08 1973-05-23 Rank Organisation Ltd Waveguides
US3710286A (en) * 1971-07-28 1973-01-09 Hitachi Ltd Control of microwave power by applying stress to gadolinium molydate single crystal
US3701055A (en) * 1972-01-26 1972-10-24 Motorola Inc Ka-band solid-state switching circuit
JPS583401B2 (ja) * 1972-05-23 1983-01-21 日本放送協会 マイクロハカイロ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
H. Meinke et al.: "Taschenbuch der Hochfrequenztechnik", New York 1968, pages 406-407 *

Also Published As

Publication number Publication date
EP0073165A1 (de) 1983-03-02
DE3276039D1 (en) 1987-05-14
FR2511812B1 (de) 1984-11-30
JPS5840901A (ja) 1983-03-10
CA1197578A (en) 1985-12-03
ATE26506T1 (de) 1987-04-15
FR2511812A1 (fr) 1983-02-25
US4507632A (en) 1985-03-26
JPS6322721B2 (de) 1988-05-13

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