EP2797161A1 - Hyperfrequenzfilter mit dielektrischem Element - Google Patents

Hyperfrequenzfilter mit dielektrischem Element Download PDF

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Publication number
EP2797161A1
EP2797161A1 EP14164871.7A EP14164871A EP2797161A1 EP 2797161 A1 EP2797161 A1 EP 2797161A1 EP 14164871 A EP14164871 A EP 14164871A EP 2797161 A1 EP2797161 A1 EP 2797161A1
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EP
European Patent Office
Prior art keywords
cavity
filter
filter according
longitudinal axis
dielectric element
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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
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EP14164871.7A
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English (en)
French (fr)
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EP2797161B1 (de
Inventor
Damien Pacaud
Nicolas Jolly
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Thales SA
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Thales SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
    • H01P1/2086—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators multimode
    • 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
    • H01P1/219—Evanescent mode filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators

Definitions

  • the present invention relates to the field of microwave wave filters, typically of frequency between 1 GHZ and a few tens of GHz.
  • a microwave wave for example received by a satellite
  • the processing of a microwave wave requires the development of specific components, allowing the propagation, amplification, and filtering of this wave. Indeed, the microwave received by a satellite must be amplified before being sent back to the ground. This amplification is only possible by separating all the frequencies received into channels, each corresponding to a given frequency band. The amplification is then carried out channel by channel. Then the signal is recombined before being sent to the transmitting antenna.
  • Filters are thus used for producing an input multiplexer (referred to as IMUX) or an output multiplexer (referred to as OMUX).
  • IMUX input multiplexer
  • OMUX output multiplexer
  • a filter can be excited only by a relatively narrow band of frequency around a resonant frequency.
  • the filter according to the invention comprises at least one cavity and a dielectric element disposed inside. More particularly, the filters according to the invention are suitable for producing OMUX-type multiplexers located after a power amplifier. Its role is to eliminate all the parasitic frequencies created by the power amplifier. The specifications of these filters are very strict in terms of quality factor and isolation (no stray modes in the band of interest) because of their situation between the power amplifier and the transmitting antenna.
  • the microwave wave filters comprise, in addition to one or more cavities coupled together in which dielectric resonators are arranged, means for coupling the energy microwave (RF) on the one hand to introduce RF energy to the input of the filter and, on the other hand, to extract RF energy at the output of the filter.
  • RF energy microwave
  • they generally comprise tuning means for adjusting the frequency of the main modes of resonance of the filter.
  • a dielectric element consists of a flat plate having the shape of a parallelogram, and the maximum of the electric field is located in the dielectric element, which thus acts as a resonator.
  • An advantage of the filter described in the patent US5880650 is that the dielectric resonator is in mechanical and electrical contact with the walls of the metal cavity by the four corners of the plate.
  • the vertices are truncated or rounded so as to match the shape of the side walls, flat or slightly curved depending on the shape of the cavity.
  • the mechanical contact allows an exact and reproducible positioning of the resonant element in the cavity and the heat transfer between the resonator element and the walls is significantly improved.
  • a disadvantage of this filter is that due to the location of the electric field in the dielectric element, the dielectric losses are important. Conversely, an empty resonant cavity has significant metal losses. The quality factor Q depending on metal losses and dielectric losses, an empty cavity or a dielectric resonator cavity therefore each have the disadvantage of significant losses that is to say a non-optimal quality factor.
  • the filter described in the patent US5880650 has been optimized for C-band operation (3 to 5 GHz). For it to operate at a higher frequency (for example in the Ku band from 10 to 13 GHZ), it is necessary to divide the dimensions by about three, which leads to a filter of small size, which is an advantage. However, the rise in frequency leads to a deterioration of the quality factor Q.
  • This filter includes a cylindrical metal cavity and inside an element also cylindrical dielectric comprising a collar, fixed to the walls of the cavity over its entire circumference by the collar through for example a ring or springs.
  • this filter the electric field is concentrated in the dielectric resonator with the aforementioned drawbacks.
  • the volume of the resonator cylinder is large, leading to a heavy filter, which is a significant disadvantage for components to be embedded on a satellite.
  • An object of the present invention is to overcome the aforementioned drawbacks.
  • the guide curve is chosen from a square, a rectangle, a hexagon, a circle, an ellipse.
  • the base comprises vertices distributed along a regular polygon.
  • all the vertices of the section are short-circuited by the conductive walls of the cavity via an electrical or microwave contact between the vertices and the walls.
  • the filter according to the invention comprises an upper pyramidal portion and a lower pyramidal portion respectively comprising an upper base coinciding with an upper extremal section and a lower base coinciding with a lower extremal section of the first portion.
  • the upper pyramidal portion and the lower pyramidal portion are identical.
  • the apex is disposed on the longitudinal axis.
  • the barycentre of said polygon is disposed on the longitudinal axis.
  • an angle between the base and a face of the pyramidal portion is less than or equal to 45.
  • the pyramidal portion is truncated along a plane perpendicular to the longitudinal axis.
  • the truncated pyramidal portion has a recess formed on an upper face of the truncated pyramidal portion.
  • at least one recess is made at any point around the circumference of the dielectric element.
  • the filter according to the invention is dimensioned so that a resonance frequency of a resonant mode is between 3 GHz and 30 GHz.
  • an electromagnetic field corresponding to a resonant mode comprises an even number 2n of areas for which the electromagnetic field has a maximum, the zones being arranged in equal number n on either side of the first portion of the dielectric element, n being selected from 1, 2 or 3.
  • each of the zones is distributed partially inside and partially outside the pyramidal portion disposed on the same side as the zone.
  • the filter according to the invention comprises at least one input cavity and one output cavity and comprises input coupling means of a microwave wave coming from an external source with said input cavity, and output coupling means between said output cavity and an external waveguide, and comprises intermediate coupling means of the cavities therebetween.
  • An object of the invention is to provide a microwave filter having very good performance in both quality factor Q and insulation.
  • isolation means the ability of the filter not to transmit unwanted modes other than the selected resonance modes of the filter.
  • the frequency range around the resonant frequency for which no parasitic mode is transmitted is denominated in the English terminology "spurious free range". Of course, we want to obtain the widest possible range.
  • a range of the order of 500 MHz is typically sought on either side of the resonant frequency, an empty quality factor at least equal to 18000 and power handling of at least 300 W per channel.
  • the figure 1a discloses a perspective view of a microwave filter (RF) 10 according to the invention.
  • This filter has at least one resonance mode and comprises a cavity 11 at least partially closed using conductive walls 12, typically metal.
  • the cavity 11 has a cylindrical outer surface defined by a directing curve C described by a straight line called generatrix of the cylinder.
  • the guide curve of the filter cavity according to the invention has a point of symmetry Sy, which facilitates manufacture and simulation.
  • the guide curve C is a square, a rectangle, a hexagon, a circle or an ellipse.
  • the longitudinal axis z of the hollow cylindrical cavity is defined as the axis parallel to a generating line and passing through the points of symmetry.
  • the filter 10 according to the invention also comprises at least one dielectric element 13 disposed in the cavity 11.
  • the dielectric element 13 comprises a first portion 131 having a thickness e along the z axis and a section along a plane perpendicular to z of which the vertices S1, S2,... Sp are distributed according to a polygon P.
  • the polygon represented on the figure 1 is a square, but any polygon P is compatible with the invention.
  • the polygon is regular (triangle, square, pentagon, hexagon %) or rectangular, to allow a low-cost industrial production of the filter and easier optimization due to the presence of axes of symmetry.
  • the polygon is a square so as to limit the contacts between the dielectric element 13 and the cavity 11, which makes it possible to favor certain modes and to guarantee the quality of the contacts.
  • the sides which join the vertices between them are straight segments, but any other form is compatible with the filter 10 according to the invention, variants of which are described below.
  • the contact of the dielectric element 13 with the conducting wall is effected through the first portion 131, according to the same principle as that described in the patent US5880650 , that is to say that at least two vertices of the polygon are short-circuited between them by the walls 12, via an electrical or microwave contact between these vertices and the wall.
  • all the vertices S1 ... Sp of the polygon P are short-circuited by the conductive walls.
  • the dielectric element 13 also comprises at least one pyramidal portion 132, 133 as illustrated in FIGS. figures 1a (perspective view), 1b (side view) and 1c (top view).
  • the pyramidal portion comprises an apex Asup, Ainf, top of the pyramid, and a base Bsup, Binf, which coincides with an extremal section 134, 135 of the first portion 131.
  • extremal section is the upper section 134 and the lower section 135 of the first portion 131 of thickness e.
  • the particular shape of the dielectric element associated with an optimized dimensioning makes it possible to obtain a filter with improved performances compared to those of the filters of the state of the art.
  • the dielectric element 13 comprises a single pyramidal portion, lower 132 or greater 133.
  • the dielectric element 13 comprises two pyramidal portions on either side of the first portion 131, the upper base Bsup coinciding with the upper end section 134 and the lower base Binf coinciding with the lower end section 135 of the first portion 131.
  • the filter according to the invention comprises a plane of symmetry xy.
  • the existence of a symmetry on the shape of the dielectric element makes it possible to obtain better insulation, because of the symmetry of modes that follows. A distortion of the modes makes the behavior of the filter not optimal.
  • the filters according to the invention operate in a TE (transverse electric) mode.
  • the figure 2 schematically illustrates an example of a pyramidal structure whose base consists of vertices arranged on a polygon P of barycentre Ba, and Apex Asup.
  • the centroid Ba and the Asup apex are not arranged on the longitudinal axis z of the cylindrical cavity.
  • centroid B of the polygon P serving as a base for the pyramidal portion is disposed on the longitudinal axis z of the cavity 11, as illustrated.
  • the dielectric element 13 is made of a single block, which has the advantage of facilitating the industrial production of the element 13, obtained by molding, machining or grinding or by additive manufacturing (stereo-lithography).
  • the figure 3 illustrates a preferred embodiment of pyramidal portion, whose base is a regular polygon (3a: square, 3b: pentagon) whose apex A has an orthogonal projection on the base, defining a height h, which passes through the centroid Ba of the polygon.
  • pyramidal portion examples are the regular tetrahedron, the square pyramid ( figure 3a ), the pentagonal pyramid ( figure 3b ), the hexagonal pyramid ....
  • the angle ⁇ is the angle between the base of the pyramid and one side of the pyramid. According to a preferred embodiment, the angle ⁇ (or all the angles ⁇ when they are not equal) is less than or equal to 45 °.
  • the figure 4 represents an alternative dielectric element 13 inside a cylindrical cavity 11 of generating curve C in a circle (cylinder circular).
  • the figure 4a illustrates a perspective view, the figure 4b a profile view.
  • the pyramidal portion is truncated, for example along a plane T perpendicular to the longitudinal axis z.
  • the apex is then virtual.
  • Truncation is defined by a distance Dtr corresponding to the fraction k of the height for which the material has been deleted.
  • Deuteronomists kxh
  • Truncation has the advantage of limiting the sensitivity of the performance of the filter to the value of the angle ⁇ .
  • k is between 0.1 and 0.5.
  • the advantage of truncation is not significant.
  • the quality factor Q decreases substantially.
  • the figure 5 represents another variant of dielectric element 13 inside a cylindrical cavity 11 of generating curve C in a circle.
  • the figure 5a illustrates a perspective view, the figure 5b a view from above and the figure 5c a profile view.
  • the polygon is a square: the four vertices S1, S2, S3 and S4 are distributed in a square.
  • the periphery 51 of the dielectric element is rounded (chamfer 55) near the vertices to match the shape of the cylindrical wall.
  • the periphery 51 of the dielectric element 13 does not coincide with the sides of the square in which the vertices are distributed.
  • at least one recess 52 is made at any location around the periphery 51 of the dielectric element 13.
  • all the sides of the polygon have a recess 52 to ensure symmetry of the electromagnetic field.
  • One advantage is to obtain a smaller dielectric volume.
  • Another advantage is to obtain better insulation by controlling the frequency of the other modes (parasites) which depend more heavily on this portion of dielectric.
  • the recess is made so as not to add edges at right angles.
  • the filter of the figure 5 has a dielectric element which reciprocally combines and truncates. These two variants are independent.
  • the filter according to the invention is sized to operate in the C, X and Ku and Ka bands, that is to say comprising a resonance frequency in the range [3 GHz; 30 GHz].
  • a vacuum quality factor between 18000 and 19000 and a total range isolation between 1 GHz and 1.5 GHz around the resonance frequency have been calculated with a temperature compensated dielectric.
  • the dielectric element In a first type the dielectric element is used as a resonator, which means that the electric field is concentrated inside it.
  • the "resonator modes” also called dielectric modes
  • the "resonator modes” are thus modes whose electrical energy is mainly concentrated in the dielectric material (typically 90 to 95%). Their losses are essentially dielectric and depend on the characteristics of the material (loss tangent).
  • the resonant cavity is said to be “charged” by the dielectric element which modifies the dielectric permittivity of the medium.
  • the losses are essentially metallic.
  • An improved mode of operation of the filter according to the invention is called “hybrid”, and consists in charging the cavity with a dielectric to partially concentrate the electrical energy, so as to reduce the metal losses while limiting the dielectric losses.
  • the electromagnetic operation of the filter according to the invention thus combines the two types of conventional operation, which allows, partly thanks to the specific shape of the dielectric element, to minimize losses (high quality factor) while maintaining good insulation.
  • the resonant mode has an even number 2n of zones for which the electric field has a maximum, the zones being arranged in equal numbers on either side of the first portion 131 of the dielectric element 13.
  • a filter When a filter is made per channel, one option is to use for each channel a filter of identical structure and operating in the same mode, but with homothetic dimensions, to obtain proportional and determined resonant frequencies.
  • each of the areas for which the electric field has a maximum is distributed partially inside and partially outside the pyramidal portion disposed on the same side as the area in question.
  • the plates are positioned on the maximum fields to concentrate the electrical energy.
  • the first portion of the dielectric (common base of the pyramids) is positioned on a minimum of field (between the two field maxima). Since the dielectric always has a tendency to concentrate electrical energy, by adjusting the dimensions of the pyramid, this energy is partially concentrated, partly internally, partly outside the dielectric, optimally.
  • An advantage of using a "hybrid" mode where the maximum field is located partially outside the dielectric and partially inside is to obtain dielectric losses lower than those obtained for a conventional resonator and loss mode. lower than those obtained for a conventional cavity-type mode.
  • the figure 6 illustrates a filter 10 according to the invention operating in "hybrid" mode, whose dielectric element comprises two square pyramids, truncated and recessed in a circular cylindrical cavity 11 as illustrated figure 5 , the contact between element 13 and wall 12 is effected by the four corners of the square, as well as the distribution of the field lines of the resonant mode in the cavity. On the figure 6 is also illustrated the distribution of field lines for highlighting the position of field maxima, for example for a polarization.
  • the figure 6a represents a profile view et al figure 6b a perspective view.
  • Zones 61 and 62 correspond to the locations for which the electric field has a maximum.
  • Each zone 61, 62 is partially distributed in the dielectric element and partially outside thereof. Concentrating electrical energy center of the cavity, partially in the dielectric, substantially reduces the metal losses, while limiting the dielectric losses.
  • the figure 6a represents a profile view and the figure 6b a perspective view of the dielectric element 13 and the distribution of the field lines.
  • FIG 8 Another variant of the shape of the dielectric element is illustrated figure 8 .
  • the truncated pyramid has a recess 80 made on an upper face of the truncated pyramidal portion.
  • the realization of this recess in optimal dimensions makes it possible to control the frequencies of the parasitic modes.
  • the recess disturbs little the distribution of the maximum electric field, partially inside and partially outside the pyramidal portion.
  • a first exemplary embodiment of a filter 10 according to the invention is illustrated schematically figure 10 .
  • the filter comprises at least one input cavity 101 and an output cavity 102, input coupling means 103 of a microwave wave from an external source with the input cavity 101 and output coupling means 104 between the output cavity 102 and an external waveguide and comprises intermediate coupling means 105 of the cavities between them.
  • Metal transverse walls 106 and 107 at least partially close the inlet and outlet cavities.
  • the filter may also comprise one or more intermediate cavities coupled together, as described in the figure 1 of the document US5880650 . All these cavities are for example electrically defined inside a cylindrical waveguide section by means of a plurality of walls transverse to the longitudinal axis of the cylinder 106, 105, 107, which close the cavities at least partially to both of them. ends of each cavity.
  • the construction materials of the waveguide and transverse walls are those commonly used by those skilled in the art for such an embodiment.
  • the input and output coupling means are also those commonly used by those skilled in the art.
  • the intermediate coupling means are conventionally different forms of slots or irises, or capacitive probes, inductive iris or a combination of both.
  • the filter according to the invention may also comprise tuning means of the resonant frequency known to those skilled in the art.
  • a dielectric element according to the invention is disposed inside a cavity, but the filter according to the invention may also comprise a plurality of pyramidal dielectric elements per cavity, possibly combined with plate-type dielectric elements as described in FIG. patent US5880650 .
  • the element is preferably positioned in the middle of the cavity.
  • an element is positioned on either side of the middle of the cavity.
  • FIG. 11 Another exemplary embodiment of a filter according to the invention is described figure 11 , for which the input and output coupling means 103, 104 are positioned on the transverse walls 106, 107, in a configuration called "in line”.
  • the figure 12 illustrates a third exemplary embodiment of a filter according to the invention comprising an input cavity and an output cavity.
  • the input and output coupling means are arranged on the cylindrical wall of the corresponding cavity.
  • FIGS 13 and 14 illustrate the frequency response of a filter 10 according to the invention as illustrated figure 10 and sized for a resonance frequency of 12 GHz.
  • Parameter S is a parameter that accounts for filter performance in terms of reflection and transmission.
  • the curve S11 corresponds to the reflection and S12, or S21 to the transmission.
  • the tuning of the filter makes it possible to obtain a transmission maximum (reflection minimum) for a given frequency band.
  • the bandwidth of the filter is determined at S11 (or S22) equi-ripple, for example at 15dB or 20 dB of reflection reduction with respect to its out-of-band level.
  • the figure 13 illustrates the broadband response and shows good isolation from parasitic modes.
  • the figure 14 is a zoom around the resonant frequency and illustrates the response inside the bandwidth.
  • the filter has 4 poles and is centered around 11.950 GHz, and the bandwidth is 40 Mhz.

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EP14164871.7A 2013-04-26 2014-04-16 Hyperfrequenzfilter mit dielektrischem Element Active EP2797161B1 (de)

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FR1300974A FR3005209B1 (fr) 2013-04-26 2013-04-26 Filtre hyperfrequence avec element dielectrique

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EP2797161A1 true EP2797161A1 (de) 2014-10-29
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CA (1) CA2849854C (de)
ES (1) ES2561384T3 (de)
FR (1) FR3005209B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019175538A1 (en) * 2018-03-16 2019-09-19 Isotek Microwave Limited A microwave resonator, a microwave filter and a microwave multiplexer

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3015783B1 (fr) * 2013-12-20 2016-01-15 Thales Sa Filtre hyperfrequence passe bande accordable par rotation relative d'une section d'insert et d'un element dielectrique
GB2561664A (en) * 2017-02-15 2018-10-24 Isotek Microwave Ltd A microwave resonator
RU2690693C1 (ru) * 2018-10-05 2019-06-05 Общество с ограниченной ответственностью "Группа компаний "Ботлихский радиозавод"" Фрактальные взаимосвязанные резонаторы сверхвысокочастотных электромагнитных колебаний в виде диэлектрических трехгранных односторонних поверхностей с металлическими обкладками
US10903540B2 (en) * 2019-05-31 2021-01-26 Nokia Solutions And Networks Oy Dual-mode corrugated waveguide cavity filter
CH719745A1 (fr) * 2022-06-02 2023-12-15 Swissto12 Sa Filtre à guide d'ondes en peigne à résonateurs omnidirectionnels.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5880650A (en) 1995-05-12 1999-03-09 Alcatel N.V. Dielectric resonator for a microwave filter, and a filter including such a resonator
US6433652B1 (en) * 1999-11-24 2002-08-13 Murata Manufacturing Co., Ltd. Multimode dielectric resonator apparatus, filter, duplexer and communication apparatus
US20060097827A1 (en) 2004-11-09 2006-05-11 Alcatel Adjustable temperature compensation system for microwave resonators
US8031036B2 (en) 2008-10-15 2011-10-04 Com Dev International Ltd. Dielectric resonator and filter with low permittivity material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2803693B1 (fr) * 2000-01-12 2003-06-20 Cit Alcatel Resonateur, notamment pour fil trehyperfrequence, et filtre le comportant
JP3531570B2 (ja) * 2000-03-14 2004-05-31 株式会社村田製作所 共振器、フィルタ、デュプレクサ、通信機装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5880650A (en) 1995-05-12 1999-03-09 Alcatel N.V. Dielectric resonator for a microwave filter, and a filter including such a resonator
US6433652B1 (en) * 1999-11-24 2002-08-13 Murata Manufacturing Co., Ltd. Multimode dielectric resonator apparatus, filter, duplexer and communication apparatus
US20060097827A1 (en) 2004-11-09 2006-05-11 Alcatel Adjustable temperature compensation system for microwave resonators
US8031036B2 (en) 2008-10-15 2011-10-04 Com Dev International Ltd. Dielectric resonator and filter with low permittivity material

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JI-FUH LIANG ET AL: "Mixed modes dielectric resonator loaded cavity filters", MICROWAVE SYMPOSIUM DIGEST, 1994., IEEE MTT-S INTERNATIONAL SAN DIEGO, CA, USA 23-27 MAY 1994, NEW YORK, NY, USA,IEEE, no. xp10586687A, 23 May 1994 (1994-05-23), pages 731 - 734, XP010586687, ISBN: 978-0-7803-1778-9, DOI: 10.1109/MWSYM.1994.335529 *
MADRANGEAS V: "ANALYSIS AND REALIZATION OF L-BAND DIELECTRIC RESONATOR MICROWAVE FILTERS", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 40, 1 January 1992 (1992-01-01), pages 120 - 127, XP000244297, ISSN: 0018-9480, DOI: 10.1109/22.108331 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019175538A1 (en) * 2018-03-16 2019-09-19 Isotek Microwave Limited A microwave resonator, a microwave filter and a microwave multiplexer
US11342644B2 (en) 2018-03-16 2022-05-24 Isotek Microwave Limited Microwave resonator, a microwave filter and a microwave multiplexer

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Publication number Publication date
CA2849854C (en) 2021-06-01
EP2797161B1 (de) 2015-12-09
US9666924B2 (en) 2017-05-30
CA2849854A1 (en) 2014-10-26
FR3005209B1 (fr) 2015-04-10
FR3005209A1 (fr) 2014-10-31
ES2561384T3 (es) 2016-02-25
US20140320237A1 (en) 2014-10-30

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