EP0374720B1 - Wellentypwandler - Google Patents

Wellentypwandler Download PDF

Info

Publication number
EP0374720B1
EP0374720B1 EP19890123060 EP89123060A EP0374720B1 EP 0374720 B1 EP0374720 B1 EP 0374720B1 EP 19890123060 EP19890123060 EP 19890123060 EP 89123060 A EP89123060 A EP 89123060A EP 0374720 B1 EP0374720 B1 EP 0374720B1
Authority
EP
European Patent Office
Prior art keywords
circular waveguide
waveguide
wave
partition plate
coupling opening
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
EP19890123060
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0374720A2 (de
EP0374720A3 (de
Inventor
Günter Dr.-Ing. Mörz
Werner Speldrich
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.)
Bosch Telecom GmbH
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 EP0374720A2 publication Critical patent/EP0374720A2/de
Publication of EP0374720A3 publication Critical patent/EP0374720A3/de
Application granted granted Critical
Publication of EP0374720B1 publication Critical patent/EP0374720B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the present invention relates to an arrangement for converting a wave of the H11 mode in a circular waveguide into a wave from the basic mode for a rectangular or elliptical waveguide and vice versa, wherein a coupling opening is arranged in the wall of the circular waveguide so that the magnetic plane of one connected rectangular or elliptical waveguide coincides with the magnetic plane of the shaft of the H11 mode in the circular waveguide, the coupling opening has an inductively and / or capacitively acting diaphragm and a separating plate is inserted in the circular waveguide in the direction of the electrical plane of the H11 shaft, that begins in the area of the coupling opening and extends in the circular waveguide into the area where said H11 wave is to be prevented from spreading.
  • rectangular waveguides are coupled to a round waveguide over their full opening cross section. Separating plates arranged in the area of the coupling openings gradually change from a small width to a width adapted to the diameter of the circular waveguide.
  • adapter rods or conductive sheets are inserted into the rectangular waveguide, as is apparent from US Pat. No. 3,201,717.
  • GB-A-965 244 shows that a separating plate in a waveguide excites higher shaft types. To counteract this, the separating plate is provided with slots.
  • the invention is based on the object of specifying a shaft type converter of the type mentioned at the outset, which can be produced with as little effort as possible, for example by machining processes.
  • the wave type converter does not require any tuning elements in order to adapt the rectangular or elliptical input or output waveguide to the central circular waveguide over a broad band.
  • the central circular waveguide does not need to be equipped with an input or output waveguide section which is intended to accommodate adjustment elements.
  • a wave type converter of the type according to the invention can thus be produced with little effort from a hollow body with a round inner cross-section, which forms the central circular waveguide, by machining, in the wall of the hollow body, a coupling opening with an aperture for a rectangular or elliptical waveguide to be connected and around this Coupling opening is milled around a flange level directly on the hollow body.
  • the separating plate required for the shaft type converter on which the invention is based leaves can be easily manufactured by punching or etching and then inserted into the circular waveguide. Grooves embedded in the inner waveguide wall are helpful for the introduction and fastening of the separating plate in the circular waveguide. These grooves are arranged exactly in the polarization plane of the shaft (H11) which is spreading in the circular waveguide and is to be converted into another type of shaft (e.g.
  • FIGS. 1 and 2 show two views of a polarization filter formed from two wave type converters.
  • the central element of this polarization switch is a hollow body with a round inner cross section, which serves as a round waveguide RH.
  • the round waveguide RH is provided with means such that for the application of the polarization switch two orthogonally polarized waves of the H11 mode in the round waveguide RH into two separate ones Waves of the H10 or H01 mode for rectangular waveguides or the corresponding basic mode for elliptical waveguides can be converted.
  • the polarization switch is a reciprocally operable microwave component
  • two basic mode waves orthogonally oriented to one another and fed in via rectangular or elliptical waveguides are converted into two H11 waves polarized orthogonally to one another.
  • two rectangular or elliptical coupling openings K1 and K2 are milled in the wall of the circular waveguide RH in the axial direction and radially offset from one another by 90 °.
  • each of the coupling openings K1, K2 is arranged in such a way that the magnetic planes of a rectangular or elliptical waveguide connected to them coincide with the magnetic planes of the H11 wave assigned to them in the circular waveguide RH.
  • a flange plane FE1, FE2 is milled around each coupling opening K1, K2 on the outside of the circular waveguide RH. It enables the rectangular or elliptical waveguide to be coupled to be flanged directly to the hollow body serving as a round waveguide RH without any adaptation devices.
  • Such adaptation devices for example tuning pins, which are usually arranged in waveguide sections branching off from the coupling openings, to which the further waveguides are flanged, are unnecessary due to the following easy-to-implement means.
  • a dividing plate TB1, TB2 is inserted in the circular waveguide RH, which lies in the electrical plane of the H11 shaft that is to be coupled to the coupling opening K1, K2 associated with it.
  • the partition plate TB1, TB2 causes the desired H11 shaft to be deflected to the coupling opening and thereby converted into the basic mode for the rectangular or elliptical waveguide.
  • the divider plate TB1, TB2 begins in the area of the coupling opening K1, K2 with a narrow width and expands continuously or step-wise to the internal dimensions of the round waveguide RH adjusted width.
  • the shape with which the separating plate TB1, TB2 widens in width has an influence on the frequency range in which there is a low-reflection transition.
  • the partition plate TB1, TB2 partially extends into the area of the circular waveguide RH, where the shaft to be deflected by this partition plate is to be prevented from spreading.
  • the partition plate TB1, TB2 is provided with a plurality of slots S1, S2. They suppress resonances caused by the partition plate TB1, TB2.
  • a tongue-like extension V1, V2 present at the opposite narrow end of the separating plate TB1, TB2 also serves the same purpose. It is very well suited for receiving a compensation element KE, for example in the form of a short pencil.
  • the interference compensation by the KE pin is so good that for the second wave type converter connected downstream to generate a polarization filter, its geometry is identical to that of the first wave type converter, in terms of amount, the same reflection factor is achieved as if it were operated as the sole wave type converter - without another wave type converter connected upstream of it.
  • the second wave type converter of a polarizing filter does not have to be the same as the first. It can also be replaced by another waveguide or coaxial transition that excites an H11 shaft in the round waveguide.
  • the two separating plates TB1 and TB2 are inserted in grooves N11, N12 and N21, N22, which are milled into the inner wall of the circular waveguide RH. That is, for each partition plate TB1 and TB2 there are a pair of grooves N11, N12 and N21, N22 running in the axial direction of the circular waveguide. The position of the grooves is exactly based on the polarization planes of the H11 waves, so that the separating plates TB1, TB2 used in the grooves N11, N12 and N21, N22 are aligned precisely with the polarization planes.
  • the coupling openings K1 and K2 have capacitively and / or inductively acting diaphragms B1 and B2, which can be produced together with the coupling openings in a milling process.
  • the dimensions of these diaphragms B1, B2 and the shape and position of the separating plates TB1, TB2 relative to the coupling opening are decisive for the adaptation of the round waveguide RH to the coupled rectangular or elliptical waveguide.
  • FIG. 3 shows a reflection diagram in which several locus curves of a wave type converter of the type described here are drawn in different positions A, B, C, D with respect to the real axis Re and the imaginary axis Im.
  • ⁇ the center frequency
  • o the lower and with x the upper frequency of the frequency band for which the wave type converter is adapted
  • the position of the center frequency of this frequency band can be determined solely by the angle ⁇ (see FIG. 1) with which the partition plate expands.
  • the center frequency can be varied in a frequency range of f c (1.1 ... 1.25), where f c is the cut-off frequency of the H11 mode.
  • the real part of the reflection factor of the wave type converter can be freely selected by moving the separating plate TB1 or TB2 in the direction of the longitudinal axis z of the circular waveguide RH. As indicated in FIG. 3, this measure allows the locus to be shifted in parallel in the direction of the real axis Re of the reflection factor diagram from position B via A to C and vice versa. An independent shift of the locus in the direction of the imaginary axis Im from position D via A to E and vice versa can be carried out by appropriately dimensioning the broad side of the aperture B1 or B2.
  • a suitable dimensioning of the diaphragms B1, B2 and the separating plates TB1, TB2 for example in the frequency range 10.75 GHz ⁇ 12.5 GHz, an adaptation with a reflection factor of r ⁇ 0.015 with a relative one can be made for each polarization Achieve a bandwidth of approximately 0.15.

Landscapes

  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
EP19890123060 1988-12-22 1989-12-13 Wellentypwandler Expired - Lifetime EP0374720B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883843259 DE3843259C1 (ko) 1988-12-22 1988-12-22
DE3843259 1988-12-22

Publications (3)

Publication Number Publication Date
EP0374720A2 EP0374720A2 (de) 1990-06-27
EP0374720A3 EP0374720A3 (de) 1991-03-27
EP0374720B1 true EP0374720B1 (de) 1994-07-20

Family

ID=6369872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890123060 Expired - Lifetime EP0374720B1 (de) 1988-12-22 1989-12-13 Wellentypwandler

Country Status (2)

Country Link
EP (1) EP0374720B1 (ko)
DE (1) DE3843259C1 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113760C2 (de) * 1991-04-26 1994-09-01 Hirschmann Richard Gmbh Co Anordnung zur Umwandlung eines Mikrowellentyps

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB965244A (en) * 1959-12-16 1964-07-29 Philips Electrical Ind Ltd Improvements in or relating to wave-guide devices
NL270085A (ko) * 1960-10-19
US3162828A (en) * 1961-03-02 1964-12-22 Avco Corp Cross-linear polarization system
FR1436660A (fr) * 1965-03-09 1966-04-29 Thomson Houston Comp Francaise Perfectionnements aux dispositifs de rotation de polarisation
DE2651935B2 (de) * 1976-11-13 1980-09-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Breitbandige Polarisations-Weiche
DE3020514A1 (de) * 1980-05-30 1981-12-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Antennenspeisesystem fuer eine nachfuehrbare antenne
DE3241890A1 (de) * 1982-11-12 1984-05-17 kabelmetal electro GmbH, 3000 Hannover Polarisationsweiche mit speisehorn
CH664848A5 (en) * 1984-08-22 1988-03-31 Huber+Suhner Ag Circular polariser for telecommunications - has stepped septum dividing waveguide into two and two dielectric plates to correct phase error

Also Published As

Publication number Publication date
EP0374720A2 (de) 1990-06-27
DE3843259C1 (ko) 1990-03-15
EP0374720A3 (de) 1991-03-27

Similar Documents

Publication Publication Date Title
DE3781398T2 (de) Zwei-moden-hohlleiterfilter mit einem koppelelement zum erreichen einer asymmetrischen filterkurve.
DE3706965C2 (ko)
EP1004149B1 (de) Hohlleiterfilter
DE3241890A1 (de) Polarisationsweiche mit speisehorn
DE2708306C2 (de) Frequenzweiche
DE68917373T2 (de) Magnetisch abstimmbares Bandpassfilter.
DE68918426T2 (de) Doppelfrequenz strahlende Vorrichtung.
DE3634772C2 (ko)
DE2653856C2 (de) Filter für sehr kurze elektromagnetische Wellen
EP0374720B1 (de) Wellentypwandler
DE3111106A1 (de) Polarisationsweiche
WO1990003690A1 (de) Oberflächenwellenfilter
DE3421313C2 (ko)
DE3439414A1 (de) Antennenerreger fuer mindestens zwei unterschiedliche frequenzbaender
EP0147693B1 (de) Breitband-Polarisationsweiche
DE2616121C3 (de) Wanderfeldröhre
DE1933950C3 (de) Anordnung zur Erregung der Schwingung«!ornt H20 in einem rechteckigen Haupthohlleiter mittels Wellen der Schwingungsform H10, und Verwendung der Anordnung zum Aufbau einer Monopubquelle
DE3439413A1 (de) Antennenerreger fuer mindestens zwei unterschiedliche frequenzbaender
EP0905813B1 (de) Polarisationsweiche zur Ausleuchtung einer Antenne
DE2747632C2 (de) Antennenspeisesystem für Doppelpolarisation
DE2636633A1 (de) Verzoegerungsleitung fuer wanderfeldroehren, insbesondere zur verstaerkung von mm-wellen
DE7638147U1 (de) Verzoegerungsleitung fuer lauffeldverstaerkerroehren
DE3204863C2 (de) Abstimmbares oder umstimmbares Filter
DE4113760C2 (de) Anordnung zur Umwandlung eines Mikrowellentyps
DE3607846C2 (ko)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

17P Request for examination filed

Effective date: 19901227

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH FR GB IT LI

17Q First examination report despatched

Effective date: 19930519

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR GB IT LI

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941024

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20001123

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20001212

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20001215

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011231

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20011213

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020830

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051213