EP0021523A1 - Bandsperrfilter für eine Mikrowellenübertragungsleitung und Polarisationsschaltung eines Mikrowellentransistors mit diesem Filter - Google Patents

Bandsperrfilter für eine Mikrowellenübertragungsleitung und Polarisationsschaltung eines Mikrowellentransistors mit diesem Filter Download PDF

Info

Publication number
EP0021523A1
EP0021523A1 EP19800200567 EP80200567A EP0021523A1 EP 0021523 A1 EP0021523 A1 EP 0021523A1 EP 19800200567 EP19800200567 EP 19800200567 EP 80200567 A EP80200567 A EP 80200567A EP 0021523 A1 EP0021523 A1 EP 0021523A1
Authority
EP
European Patent Office
Prior art keywords
filter
transmission
frequency
notch filter
equal
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.)
Granted
Application number
EP19800200567
Other languages
English (en)
French (fr)
Other versions
EP0021523B1 (de
Inventor
François de Ronde
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.)
Laboratoires dElectronique Philips SAS
Koninklijke Philips NV
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Laboratoires dElectronique et de Physique Appliquee, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Laboratoires dElectronique et de Physique Appliquee
Publication of EP0021523A1 publication Critical patent/EP0021523A1/de
Application granted granted Critical
Publication of EP0021523B1 publication Critical patent/EP0021523B1/de
Expired 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
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H01P1/2039—Galvanic coupling between Input/Output

Definitions

  • the present invention relates to a notch filter for microwave transmission line with distributed constants produced in planar structure and in particular according to the microstrip technique, as well as a microwave transistor bias circuit comprising this filter.
  • a conventional way of ensuring the reception of a microwave signal consists in providing in the receiver a mixer which receives on the one hand this useful microwave signal of frequency f S and on the other hand a signal of frequency f OL delivered by an oscillator local and which delivers a signal at an intermediate frequency f FI equal to the difference of the frequencies f S and f OL .
  • a filter must be placed which prevents the transmission of the frequencies f S and f OL while promoting that of the lower frequency f FI ', that is to say a low-pass filter or at less tape cutter.
  • the object of the invention is to propose a band-cut microwave filter which avoids such necessarily unsatisfactory compromises and which proves to be extremely compact while presenting a fairly wide cut band and offering a short-circuit plane well located by compared to the mixer to optimize the yield thereof.
  • the notch filter thus produced uses an extremely small space very effectively, since the combination of the two filtering elements and a judicious choice of their dimensions make it possible to obtain at will the desired width of cut band.
  • the filter may comprise at least a third filtering element intended to prevent the transmission of a third frequency band of the dual frequency centered on the central frequency of the second frequency band and composed of a quarter electrical wavelength filter ⁇ 2/8 placed in parallel on one of the two transmission paths at a distance from the entry point of the notch filter equal to (n - 1) ⁇ 1/2 , n being a positive integer compatible with the length of the transmission paths , or alternatively, intended to prevent the transmission of a third frequency band centered on the frequency twice the central frequency of the first frequency band and composed of a quarter wave filter of electrical length ⁇ 1 / 8 placed in parallel on one of the
  • the notch filter shown in FIG. 1 has an entry point E, to which an upstream part L of the transmission line is connected, to which the filter is incorporated, and an exit point S, to which a downstream part is connected L of this transmission line.
  • This notch filter is composed, according to the invention, of a first filter element 20 and of a second filter element 10, intended to prevent the transmission respectively of a first frequency band and of a second frequency band adjacent to the first.
  • Element 10 is composed of a quarter-wave filter, of electrical length equal to a quarter of the wavelength ⁇ 2 associated with the center frequency of the second frequency band, and placed at the entry point E of the notch filter.
  • the element 20 is composed of a set of two transmission paths 21 and 22 in parallel which separate at the entry point E, in the short-circuit plane defined by the presence of the second filter element 10, surround this element 10 and regroup at the exit point S.
  • the first channel 21 follows in the example here describes a path in an arc of a circular length ⁇ 1/4 ( ⁇ 1 being the wavelength associated with the central frequency of the first frequency band), while the second channel 22 follows a path in a complementary arc, of electrical length 3 ⁇ 1/4 .
  • the signals at the frequency corresponding to the wavelength ⁇ 1 therefore arrive in phase opposition and no signal at this frequency is transmitted to part L of the line of transmission.
  • the outline of the notch filter is obviously extremely compact, since the circular shape adopted for element 20 is very compact and the interior of this first element is used for positioning. of the second filter element. Furthermore, the insulation provided by the notch filter according to the invention is excellent, and limited only by the parasitic coupling (higher modes) which can appear between E and S (an attenuation of 60 dB can for example be obtained if you don't want a bandwidth greater than a few percent).
  • the electrical lengths of the two transmission channels can be greater than those of the example described above; it is only important that each of these lengths is equal to an odd number of times a quarter of the wavelength ⁇ 1 and that the difference between these lengths is equal to (2m -1) ⁇ 1/2 so that the opposition phase is well obtained in S (m is any positive integer).
  • the example described above, which corresponds to m 1, however corresponds to the most compact and therefore the most advantageous embodiment, in two respects moreover, on the one hand for its use in applications where the small footprint components play a key role, and on the other hand to better focus the electric fields and magnetic and thus make the filter less sensitive to proximity effects.
  • the wavelength ⁇ 2 is for example that associated with the useful microwave signal of frequency f s received and intended for the mixer (for example a microwave diode), and the length d wave ⁇ 1 that which is associated with the frequency signal f OL supplied by the local oscillator and also sent to the mixer.
  • the downstream part L of the transmission line receives only the frequency signal f FI supplied by the non-linear component that constitutes the mixer; the fre- q uence f S and f OL signals do not reach this part L s, thanks to the combined action of the filter elements 20 and 10.
  • this filter comprises, in accordance with FIG. 2a, a third filtering element 30, intended to prevent the transmission of a third frequency band centered on the frequency twice the center frequency of the first frequency band.
  • the signal of frequency f OL delivered by the local oscillator has an amplitude in general much higher than that of the microwave signal received, of frequency f S , and the presence of l harmonic of rank 2 of this frequency signal f OL therefore corresponds to a significant loss of energy.
  • the introduction of the third filter element 30 makes it possible to prevent the transmission of this harmonic and to avoid the deterioration of the efficiency which results from such a transmission.
  • this third filtering element can be provided, if necessary, for transmitting the transmission of a third frequency band-centered on the harmonic of rank 2 of the center frequency of the second frequency band, and no longer of the first frequency band.
  • the third filter element 30 is a quarter-wave filter placed in parallel on the second transmission channel 22, at a distance from the entry point E of the notch filter equal to ⁇ 1/2 (or, if the lengths of the transmission paths are higher than those of the embodiments shown in the figures, n ⁇ 2/2, n being a positive integer compatible with the respective lengths.
  • the length of this filter is ⁇ 1/8 if we want to eliminate the harmonic of rank 2 from the signal filtered by the first wire element tration 20 or ⁇ 2/8 if it is desired to eliminate the second harmonic 2 of the signal filtered by the second filter element 10.
  • Figure 2b shows an alternative embodiment in which this element 30 is directed inward of the ring.
  • This variant is very advantageous since it retains the notch filter according to the invention its extremely compact character, despite the presence of an additional filter element.
  • FIG. 3 shows another possible application of the invention, namely the incorporation of the notch filter into the bias circuit of a microwave transistor.
  • the notch filter according to the invention is connected (perpendicularly in the present case), at its entry point E, to a section 40 of transmission line, itself placed in parallel on a transmission line 41 comprising a microwave transistor 42 and a capacitor 45.
  • the length of the section 40 is equal to a quarter of the wavelength associated with the microwave signal crossing the transmission line 41.
  • the filter is also connected (perpendicularly), at its output point S , to a supply circuit 43 of the transistor 42.
  • This arrangement allows the circuit 43 to ensure the bias of the transistor 42 by transmission of its bias voltage through the line section 44, the notch filter (such as that in FIG. 1 for example), the section 40 and the line 41. Conversely, the microwave signal which traverses the line 41 cannot reach the circuit 43 because of the effective barrier constituted by the notch filter. The filtering action is even more effective if the section 40 is given as high an impedance as possible.
  • the present invention is not limited to the few exemplary embodiments which have just been described and shown, from which other alternative embodiments can be provided without thereby departing from the scope of the invention.
  • the circular arrangement of the two transmission channels of the first filter element has been recognized as being as compact as possible, but a square or rectangle arrangement, for example, remains very compact and therefore almost as advantageous as that described and shown. .

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Connection Structure (AREA)
EP19800200567 1979-06-25 1980-06-17 Bandsperrfilter für eine Mikrowellenübertragungsleitung und Polarisationsschaltung eines Mikrowellentransistors mit diesem Filter Expired EP0021523B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7916260 1979-06-25
FR7916260A FR2460049A1 (fr) 1979-06-25 1979-06-25 Filtre coupe-bande pour ligne de transmission hyperfrequence et circuit de polarisation de transistor hyperfrequence comprenant ce filtre

Publications (2)

Publication Number Publication Date
EP0021523A1 true EP0021523A1 (de) 1981-01-07
EP0021523B1 EP0021523B1 (de) 1986-05-07

Family

ID=9227049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800200567 Expired EP0021523B1 (de) 1979-06-25 1980-06-17 Bandsperrfilter für eine Mikrowellenübertragungsleitung und Polarisationsschaltung eines Mikrowellentransistors mit diesem Filter

Country Status (7)

Country Link
EP (1) EP0021523B1 (de)
JP (1) JPS566501A (de)
AU (1) AU536334B2 (de)
BR (1) BR8003890A (de)
CA (1) CA1159118A (de)
DE (1) DE3071590D1 (de)
FR (1) FR2460049A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731521A1 (de) * 1992-04-30 1996-09-11 Matsushita Electric Industrial Co., Ltd. Schleifenförmiger Zweifachmodus-Streifenresonator um Mikrowellen in zwei Moden zu resoneren und Bandpassfilter mit den Resonatoren

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510326A1 (fr) * 1981-07-24 1983-01-28 Thomson Csf Filtre passe-bande a resonateurs lineaires ouverts a leurs deux extremites
FR2517491A1 (fr) * 1981-11-27 1983-06-03 Labo Electronique Physique Combineur-melangeur a transistor double source
JP5749133B2 (ja) * 2011-10-04 2015-07-15 古河電気工業株式会社 高周波モジュール
JP7133486B2 (ja) * 2019-01-16 2022-09-08 日立Astemo株式会社 信号伝送装置、信号伝送システム

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2874276A (en) * 1952-05-08 1959-02-17 Int Standard Electric Corp Unitary antenna-receiver utilizing microstrip conductors
FR72524E (fr) * 1951-05-23 1960-04-14 Int Standard Electric Corp Système de transmission pour haute fréquence
US3150325A (en) * 1962-04-12 1964-09-22 Donald J Blattner Wide band traveling wave parametric amplifier
DE2453605A1 (de) * 1974-11-12 1976-05-13 Siemens Ag Einrichtung zur zusammenschaltung von signalenergie
DE2804118A1 (de) * 1978-01-31 1979-08-02 Siemens Ag Mikrowellen-ringhybridschaltung in streifenleitungstechnik
US4185252A (en) * 1978-05-10 1980-01-22 The United States Of America As Represented By The Secretary Of The Army Microstrip open ring resonator oscillators
EP0015610A1 (de) * 1979-03-06 1980-09-17 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Spiegelfrequenzreflektierendes Mikrowellenfilter und Mikrowellenempfänger mit einem solchen Filter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5352336A (en) * 1976-10-22 1978-05-12 Mitsubishi Electric Corp Dividing filter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR72524E (fr) * 1951-05-23 1960-04-14 Int Standard Electric Corp Système de transmission pour haute fréquence
US2874276A (en) * 1952-05-08 1959-02-17 Int Standard Electric Corp Unitary antenna-receiver utilizing microstrip conductors
US3150325A (en) * 1962-04-12 1964-09-22 Donald J Blattner Wide band traveling wave parametric amplifier
DE2453605A1 (de) * 1974-11-12 1976-05-13 Siemens Ag Einrichtung zur zusammenschaltung von signalenergie
DE2804118A1 (de) * 1978-01-31 1979-08-02 Siemens Ag Mikrowellen-ringhybridschaltung in streifenleitungstechnik
US4185252A (en) * 1978-05-10 1980-01-22 The United States Of America As Represented By The Secretary Of The Army Microstrip open ring resonator oscillators
EP0015610A1 (de) * 1979-03-06 1980-09-17 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Spiegelfrequenzreflektierendes Mikrowellenfilter und Mikrowellenempfänger mit einem solchen Filter

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS LETTERS, Vol. 14, No. 16, 3 Aout 1978 Hitchin Herts GB G. D'INZEO et al.: "Microwave planar networks: the annular structure", pages 526-528 * En entier * *
JOURNAL OF THE ASIA ELECTRONICS UNION, Vol. 3, No. 3, 1970 Tokyo JP K.K. PANG et al.: "Design of a stripline filter using high-Q triplate lines", pages 38-39 * En entier * *
L'ONDE ELECTRIQUE, Vol. 53, No. 11 Decembre 1973 Paris FR J. CHRAMIEC et al.: "Etude d'un amplificateur parametrique equilibre", pages 405-411 * En entier * *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731521A1 (de) * 1992-04-30 1996-09-11 Matsushita Electric Industrial Co., Ltd. Schleifenförmiger Zweifachmodus-Streifenresonator um Mikrowellen in zwei Moden zu resoneren und Bandpassfilter mit den Resonatoren
US5623238A (en) * 1992-04-30 1997-04-22 Matsushita Electric Industrial Co., Ltd. Strip line filter having dual mode loop resonators
US5703546A (en) * 1992-04-30 1997-12-30 Matsushita Electric Industrial Co., Ltd. Strip line filter having dual mode loop resonators

Also Published As

Publication number Publication date
EP0021523B1 (de) 1986-05-07
AU536334B2 (en) 1984-05-03
FR2460049A1 (fr) 1981-01-16
DE3071590D1 (en) 1986-06-12
FR2460049B1 (de) 1983-07-08
JPS6322481B2 (de) 1988-05-12
BR8003890A (pt) 1981-01-13
AU5951480A (en) 1981-01-08
JPS566501A (en) 1981-01-23
CA1159118A (en) 1983-12-20

Similar Documents

Publication Publication Date Title
EP0013222B1 (de) Diodenphasenschieber für Mikrowellen und elektronisch abtastende Antenne mit einem solchen Schieber
EP2869400B1 (de) Doppelpolarisierter kompakter Leistungsverteiler, Netz aus mehreren Verteilern, kompaktes Strahlungselement und Flachantenne, die einen solchen Verteiler umfasst
FR2652460A1 (fr) Dispositifs d'amplificateurs montes en parallele munis de resistances d'isolation commutees.
FR3049758A1 (fr) Transformateur de puissance du type symetrique-dissymetrique a topologie completement equilibree
EP3462532A1 (de) Leistungsverteiler für antenne, der vier identische orthomode transducer umfasst
EP0021523A1 (de) Bandsperrfilter für eine Mikrowellenübertragungsleitung und Polarisationsschaltung eines Mikrowellentransistors mit diesem Filter
WO2016023919A1 (fr) Source multibande a cornet coaxial avec systemes de poursuite monopulse pour antenne a reflecteur
EP0023873B1 (de) Passiver Leistungsbegrenzer mit Halbleitern und als Streifenleitung ausgeführt und Mikrowellenschaltung mit einem solchen Begrenzer
EP0078188B1 (de) Breitband-Hochfrequenzanordnung zur Erzeugung von harmonischer gerader Ordnung eines Eingangssignals und deren Verwendung in einem H.F.-System
EP0472483A1 (de) Bidirektionaler Duplexer für polarisierte Mikrowellen, insbesondere realisiert in monolithischer Technologie auf Galliumarsenid
EP2058947B1 (de) Aktive reziproke Breitband-Balunstruktur
EP0015610B1 (de) Spiegelfrequenzreflektierendes Mikrowellenfilter und Mikrowellenempfänger mit einem solchen Filter
EP1148631A1 (de) Frequenzumsetzer mit Unterdrückung der Spiegelfrequenzen
WO2009112377A1 (fr) Dispositif d'amplification de puissance spatial multi-sources
EP0335788B1 (de) Mikrowellenphasenschieber
FR2954004A1 (fr) Coupleur electrique et appareil de communication comportant un tel coupleur electrique
EP1187308B1 (de) Spannungsgesteuerter Oszillator
FR2794311A1 (fr) Filtre passe-bande a reduction de la frequence porteuse
EP0032332A1 (de) Hochfrequenzleistungsteiler und Hochfrequenzschaltungen, insbesondere Halbleiterschaltungen mit einem solchen Teiler
FR2733090A1 (fr) Filtre passe-bande a cavites, a structure en peigne et radioaltimetre equipe d'un filtre d'entree de ce type
EP0943176A1 (de) Kompakter gegentaktmischer, welcher eine mikrowellenintegrierte schaltung mit vier kalten fets verwendet
FR3060864B1 (fr) Ligne de transmission a ondes lentes a meandres
EP1715597B1 (de) Antenne mit planaren strahlenden Flächen mit Umschalt-Schaltkreis
FR2735926A1 (fr) Coupleur hybride
FR2662308A1 (fr) Dispositif de transition entre deux lignes hyperfrequence realisees en technologie planaire.

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

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19810403

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

Owner name: LABORATOIRES D'ELECTRONIQUE ET DE PHYSIQUE APPLIQU

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL SE

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REF Corresponds to:

Ref document number: 3071590

Country of ref document: DE

Date of ref document: 19860612

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
REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

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

Ref country code: GB

Payment date: 19920601

Year of fee payment: 13

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

Ref country code: BE

Payment date: 19920609

Year of fee payment: 13

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

Ref country code: FR

Payment date: 19920624

Year of fee payment: 13

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

Ref country code: SE

Payment date: 19920629

Year of fee payment: 13

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920630

Year of fee payment: 13

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

Ref country code: DE

Payment date: 19920827

Year of fee payment: 13

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

Ref country code: GB

Effective date: 19930617

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

Ref country code: SE

Effective date: 19930618

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

Ref country code: BE

Effective date: 19930630

BERE Be: lapsed

Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

Effective date: 19930630

Owner name: LABORATOIRES D'ELECTRONIQUE ET DE PHYSIQUE APPLIQ

Effective date: 19930630

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

Ref country code: NL

Effective date: 19940101

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

Effective date: 19930617

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940228

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

Ref country code: DE

Effective date: 19940301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 80200567.8

Effective date: 19940110