EP0593500B1 - Abstimmbares anpassungsnetzwerk - Google Patents

Abstimmbares anpassungsnetzwerk Download PDF

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Publication number
EP0593500B1
EP0593500B1 EP92910707A EP92910707A EP0593500B1 EP 0593500 B1 EP0593500 B1 EP 0593500B1 EP 92910707 A EP92910707 A EP 92910707A EP 92910707 A EP92910707 A EP 92910707A EP 0593500 B1 EP0593500 B1 EP 0593500B1
Authority
EP
European Patent Office
Prior art keywords
line
conductor
matching network
lines
ferrite
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
EP92910707A
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German (de)
English (en)
French (fr)
Other versions
EP0593500A1 (de
Inventor
Siegbert Martin
Erich Pivit
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.)
AFT Advanced Ferrite Technology GmbH
Original Assignee
AFT Advanced Ferrite Technology GmbH
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Filing date
Publication date
Application filed by AFT Advanced Ferrite Technology GmbH filed Critical AFT Advanced Ferrite Technology GmbH
Publication of EP0593500A1 publication Critical patent/EP0593500A1/de
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling

Definitions

  • the present invention relates to a tunable matching network that can be coupled to a microwave line.
  • a tunable adaptation network e.g. for a microwave line needed, which couples microwave energy of high power into the plasma combustion chamber of a fusion reactor. Since the plasma combustion chamber represents a constantly changing load resistance for the microwave line and thus the generator generating the microwave energy is not damaged by reflections resulting from mismatching, the load resistance occurring in each case must be transformed to the line wave resistance.
  • two tunable capacitances which are separated from one another by an exactly dimensioned transformation line length are coupled to the microwave line for this purpose.
  • the capacities are coordinated by a mechanically complex pneumatic device.
  • this arrangement is likely to be too sluggish to be able to carry out an adjustment with as little delay as possible.
  • a tunable matching network can be used not only for the application described, but whenever a changing load resistor is connected to a microwave line.
  • the invention has for its object to provide a matching network that can be quickly matched to a desired impedance with little effort.
  • the matching network can be tuned electrically without mechanically movable parts ensures low-delay impedance matching with a rapidly changing load resistance of a microwave line.
  • Another advantage of the arrangement is that no transformation line is required between the two variable reactances of the matching network mentioned in the input.
  • FIG. 1 shows a longitudinal section and FIG. 2 shows a perspective illustration of a tunable adaptation network which is coupled to a microwave line L.
  • the microwave line L is a coaxial line with the inner conductor LI.
  • the microwave line L is fed at one input by a generator G and is terminated at its opposite output with a changing load resistor ZL.
  • the T equivalent circuit diagram with the impedances Z1 and Z2 inserted into the microwave line L stands for the matching network, which serves to transform the respective load resistance ZL to the line impedance.
  • the matching network has a first line L1 and a second line L2, each of which has one end in contact with the interrupted inner conductor LI of the coaxial microwave line L.
  • the two lines L1 and L2 are connected to one another at the opposite end.
  • a third line L3 branches off from this connection point.
  • the lines L1, L2 and L3 are designed as strip lines.
  • the outer conductor to the strip conductors L1, L2 and L3 is formed by the housing GS indicated by hatching, which is connected to the outer conductor of the coaxial microwave line L.
  • the plate-shaped inner conductors of the two strip lines L1 and L2 are covered with ferrite layers F1 and F2 on the adjacent sides.
  • the plate-shaped inner conductor is covered on both sides with ferrite layers F31 and F32.
  • the outer conductor GS of the three lines can also be coated with ferrite.
  • the same also applies if the lines L1, L2 and L3 are realized as coaxial lines.
  • the arrows drawn in FIG. 1 outside the matching network indicate that the two lines L1 and L2 are exposed to a magnetic field M1 and separately the third line L3 is exposed to a magnetic field M2.
  • the magnetic fields M1 and M2 can be changed independently of one another.
  • the electrical length of these two lines L1 and L2 can be varied. Irrespective of this, the electrical length of the third line L3 can be varied by means of the changeable magnetic field M2 which acts on the ferrites F31 and F32.
  • the described arrangement of the lines L1, L2 and L3 actually represents two different line systems.
  • the one line system consisting of the first line L1 and the second line L2, together with the housing GS form a shielded two-wire line on which two wave modes exist Common mode and a push mode.
  • Push-pull mode is when the currents flowing on lines L1 and L2 are equal and opposite directions
  • common mode is when the currents flowing on lines L1 and L2 are equal and equally directed.
  • the second line system consisting of line L3 and housing GS, only the common mode can be propagated.
  • the ferrite material on lines L1 and L2 is arranged between the lines (see FIG. 1) and is therefore only effective for push-pull mode.
  • the push-pull impedance Zg of the lines L1, L2 is matched by the magnetic field M1 and the common-mode impedance Zs of the line L3 by the magnetic field M2.
  • the impedances Z1 and Z2 specified in the equivalent circuit diagram (see FIG. 3) of the matching network then have the following relationship to the common-mode impedance Z s and the push-pull impedance Z g :
  • Z1 Z G
  • Z2 Z. s - Z G 2nd
  • the heat loss generated in the ferrites F1, F2, F31 and F32 can be very effective and simple with the help of cooling channels which run through the inner conductor and / or the outer conductor of the lines L1, L2 and L3 designed as strip lines or as coaxial lines.
  • a cooling channel designated by K is indicated in FIG.
  • the changeable magnetic fields M1 and M2 are generated by controllable electromagnets.
  • permanent magnets can also be provided, which generate a static magnetic field of such strength that the ferrites are operated above their gyromagnetic resonance, where they have the lowest losses.
  • the use of permanent magnets and electromagnets has the advantage that only small currents are required to tune the ferrite-loaded lines, since thanks to the permanent magnets only part of the required Magnetization must be applied by the electromagnet. It is also advantageous that if the control current for the electromagnets fails, the power loss in the ferrites does not increase very much because the permanent magnets always keep the magnetization of the ferrites above the gyromagnetic resonance.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Plasma Technology (AREA)
EP92910707A 1991-07-05 1992-05-23 Abstimmbares anpassungsnetzwerk Expired - Lifetime EP0593500B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4122290 1991-07-05
DE4122290A DE4122290C1 (ja) 1991-07-05 1991-07-05
PCT/DE1992/000420 WO1993001627A1 (de) 1991-07-05 1992-05-23 Abstimmbares anpassungsnetzwerk

Publications (2)

Publication Number Publication Date
EP0593500A1 EP0593500A1 (de) 1994-04-27
EP0593500B1 true EP0593500B1 (de) 1996-08-21

Family

ID=6435506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92910707A Expired - Lifetime EP0593500B1 (de) 1991-07-05 1992-05-23 Abstimmbares anpassungsnetzwerk

Country Status (6)

Country Link
US (1) US5430417A (ja)
EP (1) EP0593500B1 (ja)
JP (1) JPH07500225A (ja)
CA (1) CA2112819A1 (ja)
DE (1) DE4122290C1 (ja)
WO (1) WO1993001627A1 (ja)

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FI96550C (fi) * 1994-06-30 1996-07-10 Nokia Telecommunications Oy Summausverkko
DE19532780A1 (de) * 1995-09-06 1997-03-13 Pates Tech Patentverwertung Dielektrischer Wellenleiter
USRE45667E1 (en) * 2000-06-13 2015-09-08 Christos Tsironis Adaptable pre-matched tuner system and method
US8064188B2 (en) 2000-07-20 2011-11-22 Paratek Microwave, Inc. Optimized thin film capacitors
US8744384B2 (en) 2000-07-20 2014-06-03 Blackberry Limited Tunable microwave devices with auto-adjusting matching circuit
US6590468B2 (en) 2000-07-20 2003-07-08 Paratek Microwave, Inc. Tunable microwave devices with auto-adjusting matching circuit
US7865154B2 (en) * 2000-07-20 2011-01-04 Paratek Microwave, Inc. Tunable microwave devices with auto-adjusting matching circuit
US7075385B2 (en) * 2004-04-29 2006-07-11 Kathrein-Werke Kg Impedance converter device
US9406444B2 (en) 2005-11-14 2016-08-02 Blackberry Limited Thin film capacitors
US7711337B2 (en) 2006-01-14 2010-05-04 Paratek Microwave, Inc. Adaptive impedance matching module (AIMM) control architectures
US8125399B2 (en) 2006-01-14 2012-02-28 Paratek Microwave, Inc. Adaptively tunable antennas incorporating an external probe to monitor radiated power
US8325097B2 (en) 2006-01-14 2012-12-04 Research In Motion Rf, Inc. Adaptively tunable antennas and method of operation therefore
US7714676B2 (en) 2006-11-08 2010-05-11 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method
US7535312B2 (en) 2006-11-08 2009-05-19 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method with improved dynamic range
US8299867B2 (en) 2006-11-08 2012-10-30 Research In Motion Rf, Inc. Adaptive impedance matching module
US7917104B2 (en) 2007-04-23 2011-03-29 Paratek Microwave, Inc. Techniques for improved adaptive impedance matching
US8213886B2 (en) 2007-05-07 2012-07-03 Paratek Microwave, Inc. Hybrid techniques for antenna retuning utilizing transmit and receive power information
US7991363B2 (en) 2007-11-14 2011-08-02 Paratek Microwave, Inc. Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics
US8072285B2 (en) 2008-09-24 2011-12-06 Paratek Microwave, Inc. Methods for tuning an adaptive impedance matching network with a look-up table
US8067858B2 (en) * 2008-10-14 2011-11-29 Paratek Microwave, Inc. Low-distortion voltage variable capacitor assemblies
US8472888B2 (en) 2009-08-25 2013-06-25 Research In Motion Rf, Inc. Method and apparatus for calibrating a communication device
US9026062B2 (en) 2009-10-10 2015-05-05 Blackberry Limited Method and apparatus for managing operations of a communication device
US8803631B2 (en) 2010-03-22 2014-08-12 Blackberry Limited Method and apparatus for adapting a variable impedance network
US8289043B2 (en) * 2010-03-26 2012-10-16 International Business Machines Corporation Simulation of printed circuit board impedance variations and crosstalk effects
US8860526B2 (en) 2010-04-20 2014-10-14 Blackberry Limited Method and apparatus for managing interference in a communication device
US9379454B2 (en) 2010-11-08 2016-06-28 Blackberry Limited Method and apparatus for tuning antennas in a communication device
US8712340B2 (en) 2011-02-18 2014-04-29 Blackberry Limited Method and apparatus for radio antenna frequency tuning
US8655286B2 (en) 2011-02-25 2014-02-18 Blackberry Limited Method and apparatus for tuning a communication device
US8626083B2 (en) 2011-05-16 2014-01-07 Blackberry Limited Method and apparatus for tuning a communication device
US8594584B2 (en) 2011-05-16 2013-11-26 Blackberry Limited Method and apparatus for tuning a communication device
WO2013022826A1 (en) 2011-08-05 2013-02-14 Research In Motion Rf, Inc. Method and apparatus for band tuning in a communication device
US8948889B2 (en) 2012-06-01 2015-02-03 Blackberry Limited Methods and apparatus for tuning circuit components of a communication device
US9853363B2 (en) 2012-07-06 2017-12-26 Blackberry Limited Methods and apparatus to control mutual coupling between antennas
US9246223B2 (en) 2012-07-17 2016-01-26 Blackberry Limited Antenna tuning for multiband operation
US9413066B2 (en) 2012-07-19 2016-08-09 Blackberry Limited Method and apparatus for beam forming and antenna tuning in a communication device
US9350405B2 (en) 2012-07-19 2016-05-24 Blackberry Limited Method and apparatus for antenna tuning and power consumption management in a communication device
US9362891B2 (en) 2012-07-26 2016-06-07 Blackberry Limited Methods and apparatus for tuning a communication device
US9374113B2 (en) 2012-12-21 2016-06-21 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US10404295B2 (en) 2012-12-21 2019-09-03 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9438319B2 (en) 2014-12-16 2016-09-06 Blackberry Limited Method and apparatus for antenna selection

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US3384841A (en) * 1966-03-10 1968-05-21 Bell Telephone Labor Inc Ferrite phase shifter having longitudinal and circular magnetic fields applied to the ferrite
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US3745488A (en) * 1971-02-16 1973-07-10 Gte Automatic Electric Lab Inc Microwave impedance-matching network
US3792385A (en) * 1972-11-06 1974-02-12 Rca Corp Coaxial magnetic slug tuner
JPS5596701A (en) * 1979-01-19 1980-07-23 Nippon Telegr & Teleph Corp <Ntt> Coaxial variable attenuator
US4754229A (en) * 1986-01-08 1988-06-28 Kabushiki Kaisha Toshiba Matching circuit for a microwave device
US5065118A (en) * 1990-07-26 1991-11-12 Applied Materials, Inc. Electronically tuned VHF/UHF matching network

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Title
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Also Published As

Publication number Publication date
US5430417A (en) 1995-07-04
JPH07500225A (ja) 1995-01-05
DE4122290C1 (ja) 1992-11-19
EP0593500A1 (de) 1994-04-27
CA2112819A1 (en) 1993-01-21
WO1993001627A1 (de) 1993-01-21

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