EP3312933B1 - Régulateur de phase d'ondes ultra-courtes - Google Patents

Régulateur de phase d'ondes ultra-courtes Download PDF

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Publication number
EP3312933B1
EP3312933B1 EP16382474.1A EP16382474A EP3312933B1 EP 3312933 B1 EP3312933 B1 EP 3312933B1 EP 16382474 A EP16382474 A EP 16382474A EP 3312933 B1 EP3312933 B1 EP 3312933B1
Authority
EP
European Patent Office
Prior art keywords
circular
phase shifter
squared
linear
waveguide
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.)
Not-in-force
Application number
EP16382474.1A
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German (de)
English (en)
Other versions
EP3312933A1 (fr
Inventor
Alberto PELLÓN SANCHO
Ana Rosa RUÍZ LASO
Ignacio MONTESINOS ORTEGO
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.)
Tti Norte SL
Tti Norte S L
Original Assignee
Tti Norte SL
Tti Norte S L
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Priority to EP16382474.1A priority Critical patent/EP3312933B1/fr
Publication of EP3312933A1 publication Critical patent/EP3312933A1/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/06—Movable joints, e.g. rotating joints
    • H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
    • H01P1/066—Movable joints, e.g. rotating joints the relative movement being a rotation with an unlimited angle of rotation
    • H01P1/067—Movable joints, e.g. rotating joints the relative movement being a rotation with an unlimited angle of rotation the energy being transmitted in only one line located on the axis of rotation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/165—Auxiliary devices for rotating the plane of polarisation
    • H01P1/17—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation
    • H01P1/173—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation using a conductive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • H01P1/182—Waveguide phase-shifters
    • 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
    • H01P5/082—Transitions between hollow waveguides of different shape, e.g. between a rectangular and a circular waveguide

Definitions

  • the present invention relates to devices for handling microwave signals and, more particularly, to an improved waveguide-based phase shifter electronically controlled.
  • microwave phase shifters are essential components in advanced communication systems such as Satellite-On-The-Move systems and phased arrays antennas
  • Ferrite-based phase shifters can be divided in reciprocal or non-reciprocal depending upon the phase difference induced is a function of the direction of propagation of the field. Further, ferrite phase shifters may be latching (twin-toroid and dual-mode) or non-latching (rotary-field), depending upon continuous holding current must be applied to sustain the magnetic bias field.
  • the latching phase shifters show high insertion loss and it exponentially rises with frequency. The peak RF capability of the device is limited by the fast increase in insertion loss, especially when the RF power exceeds a specific value. Special attention must be given to mode control in these devices since the bias wire in enclosed by the waveguide, thus allowing a Transverse Electro-Magnetic (TEM) mode to propagate as well as higher order LSE and LSM modes.
  • TEM Transverse Electro-Magnetic
  • the rotary-field phase shifter exhibits an upper bound of the operation frequency since the diameter of the ferrite rod decreases in direct proportion to the frequency, which in turn varies the plane of polarization of the linearly polarized wave.
  • the main drawback of the ferrite-based phase shifters deals with the dependency of their electrical and magnetic properties with the environmental agents. The temperature forces a change in the permeability of the ferrite which causes an undesired tilt of the polarization plane of the linearly polarized signal.
  • Patent document US3,001,153 entitled “Microwave Phase Shifter”, claims the employment of a rotatable section of circular waveguide, means to continuosly rotating that section and devices at both ends of the rotatable part in order to insert and extract simultaneously two microwave signals having opposite senses of circular polarization.
  • the main goal of the invention disclosed in this patent document is to generate an amplitude modulated signal having a modulation frequency fourfold the frequency of rotation of the circular waveguide.
  • the microwave phase shifter disclosed in US3,001,153 has several differences with regard to the present invention:
  • a prior art variable polarization antenna is described in patent document US3,287,730 , entitled “Variable Polarization Antenna”.
  • the bulky feeding subsystem of this antenna possesses two rotatable waveguides with elliptical and rectangular cross sections and the polarization of the radiated energy depends on the orientation of the waveguides with respect to each other.
  • the main object of the present invention is to provide a microwave phase shifter with continuous phase shifting capabilities, highly accurate and stable against the environmental agents.
  • the microwave phase shifter is particularly suitable for, but not limited to, antennas of variable linear polarization.
  • microwave phase shifter of the present invention is defined by appended claims 1-3.
  • the microwave phase shifter comprises:
  • the linear-to-circular polarization converter comprises a first septum polarizer and the circular-to-linear polarization converter comprises a second septum polarizer parallel to the first septum polarizer.
  • the circular-to-linear-to-circular polarization converter of the rotatable squared waveguide comprises a double symmetric septum polarizer, such that the angular difference between the plane that holds the first and second septum polarizers and the plane that contains the double symmetric septum polarizer specifies the shifting in phase of the microwave signal.
  • the microwave phase shifter may also comprise a control unit and means for rotating the rotary joints a determined angle.
  • the means for rotating the rotary joints may comprise a motor and a belt driven gear.
  • the microwave phase shifter (10) of the present invention comprises three different main parts:
  • the first (1) and third (9) components are implemented by single septum polarizers - first septum polarizer (13) and second septum polarizer (15), respectively-.
  • a septum polarizer is a device with three physical ports and formed by two rectangular waveguides (11,12) that that have a common wide or H-plane walls. These two waveguides (11,12) are converted into a single square one by a stepped septum (13) placed at the common wall, as shown in the longitudinal cross-section of Figure 2 .
  • This kind of device was originally shown by Chen and Tsandoulas in the paper entitled " A wide-band Square-waveguide Array Polarizer," May 1973, IEEE Transactions on Antennas and Propagation, pp. 389-391 .
  • a septum polarizer In a septum polarizer, the fundamental mode within the rectangular waveguide TE10 is converted into a circularly polarized (CP) microwave signal in the squared waveguide and vice versa. Whether right-hand circular polarization (RHCP) or left hand circular polarization (LHCP) is produced depends upon which of the two rectangular ports (11,12) is excited.
  • RVCP right-hand circular polarization
  • LHCP left hand circular polarization
  • the septum of the present invention is optimized to get the desired power splitting, input port isolation, input matching and output orthogonality.
  • the circular-to-linear-to-circular polarization converter of the rotatable squared waveguide (2) is implemented by a double symmetric septum polarizer (14).
  • the double symmetric septum polarizer (14) is the cornerstone of the present invention.
  • the angular difference between the plane that holds the first (13) and second (15) septum polarizers and the plane that contains the double symmetric septum polarizer (14) specifies the shifting in phase that is forced to the travelling microwave signal. Independently of the rotation angle, the travelling wave always follows the same path within the whole device due to the septa disposition.
  • the circularly polarized signal faces the first stage of the double symmetric septum (14) which converts the incoming signal into a linearly polarized component.
  • the electric field is forced to turn the same angle ⁇ to get adapted to the new boundary conditions imposed by the presence of the stepped first septum polarizer (13).
  • the linearly polarized wave reaches the second half of the double symmetric septum (14) and it is converted to a circularly polarized signal again. Since the second septum polarizer (15) is fixed and parallel to the first septum polarizer (13), the field is tilted again an angle ⁇ .
  • a belt driven gear makes the rotatable part turn a desired angle.
  • the dimensional relation between the radio of the motor gear and the rotary joint gear permits to refine the accuracy and torque four times.
  • the whole control unit is separated from the RF path so that coexistence issues are avoided.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (3)

  1. Régulateur de phase d'ondes ultra-courtes, comprenant :
    un convertisseur de polarisation linéaire-circulaire non rotatif (1) avec une section transversale carrée, situé à une extrémité du régulateur de phase (10) ;
    un convertisseur de polarisation circulaire-linéaire non rotatif (9) avec une section transversale carrée, situé à l'extrémité opposée du régulateur de phase (10), dans lequel le convertisseur de polarisation circulaire-linéaire (9) a une conversion de rotation de polarisation opposée à celle du convertisseur de polarisation linéaire-circulaire (1) ;
    un guide d'ondes carré rotatif (2) avec un convertisseur de polarisation circulaire-linéaire-circulaire, positionné sur une section centrale du régulateur de phase (10) ;
    des joints rotatifs (5, 6) avec une section transversale circulaire pour faire tourner le guide d'ondes carré rotatif (2), les joints rotatifs (5, 6) étant situés aux deux extrémités du guide d'ondes carré rotatif (2) ;
    caractérisé en ce que le régulateur de phase (10) comprend en outre des lanceurs de mode (3, 4, 7, 8) pour adapter les guides d'ondes carrés (1, 2, 9) à la section circulaire des joints rotatifs (5, 6) ;
    dans lequel le convertisseur de polarisation linéaire-circulaire (1) comprend un premier polariseur de septum (13) et le convertisseur de polarisation circulaire-linéaire (9) comprend un second polariseur de septum (15), parallèle au premier polariseur de septum (13) ;
    et dans lequel le convertisseur de polarisation circulaire-linéaire-circulaire du guide d'ondes carré rotatif (2) comprend un polariseur à double septum symétrique (14), de sorte que la différence angulaire entre le plan qui contient les premier (13) et second (15) polariseurs à septum et le plan qui contient le polariseur à double septum symétrique (14) spécifie la régulation de phase du signal d'ondes ultra-courtes.
  2. Régulateur de phase d'ondes ultra-courtes selon la revendication 1, comprenant une unité de commande et des moyens pour faire tourner les joints rotatifs (5, 6) selon un angle déterminé.
  3. Régulateur de phase d'ondes ultra-courtes selon la revendication 2, dans lequel les moyens pour faire tourner les joints rotatifs (5, 6) comprennent un moteur et un engrenage entraîné par courroie.
EP16382474.1A 2016-10-19 2016-10-19 Régulateur de phase d'ondes ultra-courtes Not-in-force EP3312933B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16382474.1A EP3312933B1 (fr) 2016-10-19 2016-10-19 Régulateur de phase d'ondes ultra-courtes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16382474.1A EP3312933B1 (fr) 2016-10-19 2016-10-19 Régulateur de phase d'ondes ultra-courtes

Publications (2)

Publication Number Publication Date
EP3312933A1 EP3312933A1 (fr) 2018-04-25
EP3312933B1 true EP3312933B1 (fr) 2019-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16382474.1A Not-in-force EP3312933B1 (fr) 2016-10-19 2016-10-19 Régulateur de phase d'ondes ultra-courtes

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112770475B (zh) * 2020-12-30 2023-06-30 湖南华创医疗科技有限公司 功率可调的波导装置、包括其的加速器及其调节方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438119A (en) * 1942-11-03 1948-03-23 Bell Telephone Labor Inc Wave transmission
NL72696C (fr) * 1945-04-26
US2535251A (en) * 1946-04-09 1950-12-26 Alford Andrew Rotatable wave guide joint
US2738469A (en) * 1950-08-11 1956-03-13 Rca Corp Microwave filter
US3001153A (en) 1954-07-13 1961-09-19 Jr George W Luke Microwave phase shifter
US3287730A (en) 1963-02-05 1966-11-22 John L Kerr Variable polarization antenna
DE4437595A1 (de) * 1994-10-20 1996-05-30 Pt Komtelindo Adipratama Wellenleiter-Septum-Phasenschieber
US6097264A (en) * 1998-06-25 2000-08-01 Channel Master Llc Broad band quad ridged polarizer
FR2923657B1 (fr) * 2007-11-09 2011-04-15 Thales Sa Procede de fabrication d'une source hyperfrequence monobloc electroformee a lame epaisse
DE102011106590B4 (de) * 2011-06-16 2019-11-28 Airbus Defence and Space GmbH Orthomodenkoppler für ein Antennensystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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