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WO1993011606A1 - Procede et agencement pour l'optimisation de la puissance de sortie d'amplificateurs montes en parallele - Google Patents

Procede et agencement pour l'optimisation de la puissance de sortie d'amplificateurs montes en parallele Download PDF

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Publication number
WO1993011606A1
WO1993011606A1 PCT/DE1992/000988 DE9200988W WO9311606A1 WO 1993011606 A1 WO1993011606 A1 WO 1993011606A1 DE 9200988 W DE9200988 W DE 9200988W WO 9311606 A1 WO9311606 A1 WO 9311606A1
Authority
WO
WIPO (PCT)
Prior art keywords
amplifiers
wvl
output signals
traveling wave
wave tube
Prior art date
Application number
PCT/DE1992/000988
Other languages
German (de)
English (en)
Inventor
Günter JAUMANN
Original Assignee
Ant Nachrichtentechnik Gmbh
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 Ant Nachrichtentechnik Gmbh filed Critical Ant Nachrichtentechnik Gmbh
Publication of WO1993011606A1 publication Critical patent/WO1993011606A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices
    • H03F3/58—Amplifiers using transit-time effect in tubes or semiconductor devices using travelling-wave tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
    • H03F3/602—Combinations of several amplifiers

Definitions

  • the invention is based on a method according to the preamble of patent claim 1.
  • the object of the present invention is to provide a method for optimizing the output power of amplifiers connected in parallel, certain disadvantages of known methods being to be eliminated.
  • An arrangement for this purpose is also to be shown. This object is achieved with the method by the steps of claim 1 and with respect to the arrangement by the features of claims 3 or 4.
  • the further claims contain further developments of the method / the arrangement.
  • the measures of the invention make it possible to optimize the output power with simple means. Time-consuming adjustments or calibrations of phase shifters or power measurements are no longer necessary.
  • the method according to the invention works reliably and is not critical to temperature and aging phenomena. Manual readjustments are not necessary. For these reasons, the invention is particularly suitable for use in satellites.
  • 1 is a basic circuit diagram for obtaining an adjustment signal for the helix voltage of an amplifier using a mixer
  • FIG. 2 shows a basic circuit diagram for obtaining an adjustment signal for the helix voltage of an amplifier using the signal appearing at the differential output of a magic T
  • Fig. 4 shows the use of the adjustment signal for a helix voltage regulator.
  • Fig. 4 temporal courses of selected signals.
  • FIG. 1 shows two traveling field tube amplifiers WV1 and WV2 working in parallel, to which an RF signal RF to be amplified is fed, for example via a 3dB-90 ° hybrid coupler HK.
  • the outputs AI and ⁇ 2 of the traveling wave tube amplifiers WV1 and WV2 each lead to one Gate - here gates 1 and 2 - of a magic T, here labeled MT, for linking the two output signals of the traveling wave tube amplifier.
  • gate 3 of the magic T the sum of the two output signals 2xRF a from the traveling wave tube amplifiers WV1 and WV2 appears, which can be fed to an antenna, for example.
  • a small part of the output signal of each traveling wave tube amplifier is coupled out by means of a coupler K1 or K2 and fed to a mixer M.
  • This mixer M obtains a signal PA from the output signals, which signal is proportional to the phase deviation of the two output signals from one another.
  • the two output signals are rectified by means of detectors D1, D2 and fed together with the signal PA to a control logic R which combines these three signals to form an adjustment signal for a supply voltage of one of the two traveling wave tube amplifiers WV1 or WV2.
  • the adjustment signal is supplied to the power supply unit EPC 1 of the traveling wave tube amplifier WV1.
  • the power supply unit EPC 1 then varies in particular the helix voltage supplied to the traveling wave tube until the phase deviation as the output signal of the mixer signal PA becomes 0.
  • the two traveling field tube amplifiers WVl and WV2 deliver exactly the same output power.
  • the phases of the output signals of the two traveling wave tube amplifiers match.
  • FIG. Another embodiment of the invention is shown in FIG.
  • the output signal at gate 4 of the magic T is used.
  • the gate 4 is decoupled from the other three gates of the magic T and has no output signal as long as the phase of the two output signals of the traveling wave tube amplifiers WV1 and WV2 matches. If the phase position is different, the "Differential output" - Gate 4 - de ⁇ magic T appears Signal that is proportional to this phase deviation PAW.
  • This phase deviation PAW is rectified - detector D3 - and fed to a threshold value comparator Kl. If the phase deviation PAW (voltage at gate 4 of the magic T) exceeds the threshold Url of the threshold value comparator Kl, one begins at the output of the
  • Threshold comparator Kl connected counter Z to work and counts the clock pulses Tl supplied to it.
  • a downstream D / A converter which can be constructed as an integrated module or as a resistance network, converts the counting result into a voltage that is used as a reference for the helix voltage U H serves the traveling wave tube of the traveling wave tube amplifier WVl.
  • This helical voltage U H is changed via the unit EPC 1 until the voltage at gate 4 of the magic T becomes zero. Then there is phase coincidence between the output signals of the two traveling wave tube amplifiers WV1 and WV2.
  • the counter Z ends the counting up of the clock pulses TI one clock after the comparator Kl changes its output potential from 1 to 0 (see FIG. 3).
  • the adjustment signal for the helix voltage U H can advantageously be used as the reference voltage of a helix voltage regulator.
  • Figure 4 shows such an application.
  • the helix voltage regulator there consists of a series regulator with an actuator, a form of transistor VI, a series resistor Rl and an error signal amplifier Nl.
  • the output voltage of the series regulator also represents the helix voltage of a connected traveling wave tube (terminal UHE).
  • the error signal amplifier Nl compares the output voltage of the series regulator with a reference signal - here the adjustment signal supplied by the D / A converter or by the control logic R.
  • the output voltage at the UHE terminal is thus automatic varies until the voltage 0 appears at gate 4 of the magic T.
  • the longitudinal regulator is connected to the output of a high-voltage transformer Tr with a rectifier circuit, which also supplies the cathode voltage UKA and the collector voltage UKO of the traveling wave tube.
  • the differential amplifier N2 serves to suppress unwanted interference signals. Further details can be found in DE 38 34 880 C2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Amplifiers (AREA)
  • Microwave Tubes (AREA)
  • Amplifiers (AREA)

Abstract

Pour l'optimisation de la puissance de sortie d'au moins deux amplificateurs (WV1, WV2) travaillant en parallèle, leurs signaux de sortie sont comparés du point de vue de leur relation de phase et, en cas de différence de phase, la tension d'alimentation (UH) de l'un des amplificateurs (WV1) est modifiée jusqu'à ce que la différence de phase s'annule. L'invention convient en particulier pour des amplificateurs à tube à ondes progressives travaillant en parallèle. Sur l'un de ces amplificateurs à tube à ondes progressives la tension d'hélice (UH) est modifiée jusqu'à ce qu'il existe une coïncidence de phase des signaux de sortie.
PCT/DE1992/000988 1991-11-30 1992-11-26 Procede et agencement pour l'optimisation de la puissance de sortie d'amplificateurs montes en parallele WO1993011606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4139557.3 1991-11-30
DE19914139557 DE4139557A1 (de) 1991-11-30 1991-11-30 Verfahren zur optimierung der ausgangsleistung von parallel geschalteten verstaerkern sowie anordnung

Publications (1)

Publication Number Publication Date
WO1993011606A1 true WO1993011606A1 (fr) 1993-06-10

Family

ID=6445993

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000988 WO1993011606A1 (fr) 1991-11-30 1992-11-26 Procede et agencement pour l'optimisation de la puissance de sortie d'amplificateurs montes en parallele

Country Status (2)

Country Link
DE (1) DE4139557A1 (fr)
WO (1) WO1993011606A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862879A1 (fr) * 2006-05-31 2007-12-05 NEC Microwave Tube, Ltd. Régulateur linéaire de haute tension pour un tube à électrons

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909742A (en) * 1974-08-19 1975-09-30 Bell Telephone Labor Inc Linear amplification using nonlinear devices and feedback
US4041413A (en) * 1976-01-02 1977-08-09 Strothers Jr Claude Automatic phase compensation circuit for paralleling power amplifiers in the microwave frequency range
US4554514A (en) * 1984-12-21 1985-11-19 Rca Corporation Predistortion circuit with feedback

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2519845C3 (de) * 1975-05-03 1978-06-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zur Zusammenführung von Hochfrequenzleistungsanteilen
US4701716A (en) * 1986-05-07 1987-10-20 Rca Corporation Parallel distributed signal amplifiers
DE3834880A1 (de) * 1988-10-13 1990-04-19 Ant Nachrichtentech Verfahren zum unterdruecken von stoersignalen bei einem ueber ein stellglied gleichspannungsversorgten verbraucher sowie anordnung und anwendung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909742A (en) * 1974-08-19 1975-09-30 Bell Telephone Labor Inc Linear amplification using nonlinear devices and feedback
US4041413A (en) * 1976-01-02 1977-08-09 Strothers Jr Claude Automatic phase compensation circuit for paralleling power amplifiers in the microwave frequency range
US4554514A (en) * 1984-12-21 1985-11-19 Rca Corporation Predistortion circuit with feedback

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 129 (E-403)(2186) 14. Mai 1986 *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 417 (E-1125)23. Oktober 1991 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862879A1 (fr) * 2006-05-31 2007-12-05 NEC Microwave Tube, Ltd. Régulateur linéaire de haute tension pour un tube à électrons
US7764025B2 (en) 2006-05-31 2010-07-27 Nec Microwave Tube, Ltd. Power supply apparatus and high-frequency circuit system

Also Published As

Publication number Publication date
DE4139557A1 (de) 1993-06-03
DE4139557C2 (fr) 1993-09-02

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