EP2036160A1 - Magnetisch durchstimmbares filter mit koplanarleitungen - Google Patents
Magnetisch durchstimmbares filter mit koplanarleitungenInfo
- Publication number
- EP2036160A1 EP2036160A1 EP07765056A EP07765056A EP2036160A1 EP 2036160 A1 EP2036160 A1 EP 2036160A1 EP 07765056 A EP07765056 A EP 07765056A EP 07765056 A EP07765056 A EP 07765056A EP 2036160 A1 EP2036160 A1 EP 2036160A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- magnetically tunable
- tunable filter
- filter according
- resonator
- 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
Links
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
- H01P1/215—Frequency-selective devices, e.g. filters using ferromagnetic material
- H01P1/218—Frequency-selective devices, e.g. filters using ferromagnetic material the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters
Definitions
- the invention relates to a magnetically tunable filter according to claim 1.
- Magnetically tunable filter find z.
- B. Use as variable bandpass filters in spectrum analyzers and network analyzers, wherein the desired resonant frequency is adjusted by means of an external variable magnetic field.
- US Pat. No. 4,888,569 discloses a variable bandpass for frequencies within a frequency range of at most one waveguide band, for example 50-75 GHz, with four resonator balls.
- the variable bandpass includes an input waveguide, an output waveguide, and a transition waveguide designed to propagate a TE ⁇ O wave mode.
- the end of the short-circuited wall input waveguide, the beginning of the output waveguide, which is also provided with a shorting wall and mounted in the direction of the externally applied homogeneous magnetic field below the input waveguide and the output waveguide transitional waveguide is arranged in operation between two magnetic poles, which for supplying the setting of a resonant frequency variable magnetic field.
- Input waveguide and output waveguide have in the direction of wave propagation on a rectangular profile, which has a significantly smaller cross-sectional area in the coupling region than at the connecting flange.
- the coupling region of the variable bandpass comprises the four resonator balls mounted near a shorting wall and each of the tapered end of the input waveguide and output waveguide and the transitional waveguide of constant cross-sectional area.
- a disadvantage of the variable bandpass filter described in US Pat. No. 4,888,569 is that, in the case of resonance, the field distribution of the shaft to be coupled out is unfavorable in the coupling region, since this is guided in a waveguide whose profile narrows perpendicular to the propagation direction of the coupling-out shaft to the coupling region.
- the invention is therefore based on the object to provide a magnetically tunable filter for high frequencies, which has the lowest possible insertion loss in the case of resonance and a very high isolation of the filter input and filter output in the decoupling case.
- the object is achieved by the magnetically tunable filter according to the invention with the features of claim 1.
- Advantageous developments of the magnetically tunable filter are the subject matter of the dependent claims.
- the magnetically tunable filter according to the invention comprises a filter housing and two tunable resonator spheres made of magnetizable material. These are arranged side by side in two filter arms, wherein each filter arm has a built on a substrate layer and in the direction of an electrical connection, ie in the direction of the signal input or in the direction of the signal output, extending coplanar line. Both filter arms are connected to each other by a common coupling opening and have a common
- Filter housing On both sides of the coupling opening the resonator balls are arranged on each side within the two filter arms.
- the magnetically tunable filter according to the invention comprises two coplanar lines, whereby a good guidance of the incoming electromagnetic wave and the outgoing shaft is ensured.
- the coplanar lines have no lower limit frequency.
- the resonator spheres are positioned in the region of a short circuit, since here over a wide frequency range
- Magnetic field maximum occurs, which is independent of the frequency of the incoming electromagnetic wave. From the coupling structure and the conductivity type of the coplanar it follows that the working range of the filter according to the invention is relatively wide in terms of frequency and thus for a frequency range to be filtered z. B. from 40GHz to 75GHz is well suited. Furthermore, the coplanar lines used have the advantage that they have a defined characteristic impedance, so that a good coupling of the resonator balls is adjustable. In addition, the characteristic impedance of the coplanar line in the area of the resonator spheres can be easily adapted by using a ⁇ / 4 transformer or a tapers.
- the coplanar line is preferably constructed on a substrate whose dielectric constant is as low as possible in order to keep the wavelength as large as possible in comparison with the diameter of the resonator spheres.
- a large wavelength compared to the diameter of the resonator sphere reduces the excitation of interfering secondary modes, since at a large wavelength the magnetic field distribution in the volume of the resonator sphere is more homogeneous than at a smaller wavelength.
- the two coplanar lines are completely embedded in metallic channels, so that they are largely surrounded by metallic walls.
- an energy transfer is made possible by the fact that these channels or the filter arms are connected to each other via a coupling opening, wherein the coupling opening is formed differently according to the various embodiments or optionally having apertures with geometrically different or differently positioned apertures.
- a partially closed by means of a metallic partition coupling opening has the advantage that the resonator have no direct line of sight to each other.
- the height of the partition is here advantageously chosen so that, although the visual connection between the resonator is prevented, but still a sufficient coupling factor is guaranteed. This is a significant difference from all previous concepts.
- FIG. 1 is a perspective view of a schematically illustrated structure of a first embodiment of the magnetically tunable filter according to the invention
- FIG. 2 is a plan view of a schematically illustrated structure of a second embodiment of the magnetically tunable filter according to the invention.
- FIG. 3 shows a side view of a schematically illustrated structure of the second embodiment of the magnetically tunable filter according to the invention
- FIG. 4 is a front view of a schematically illustrated structure of the second embodiment of the magnetically tunable filter according to the invention.
- Fig. 5 is a perspective view of a schematically illustrated structure of a Filter arm according to the second embodiment of the magnetically tunable filter according to the invention.
- Fig. 6 shows a first embodiment of the end portion of
- Fig. 1 shows a perspective view of a schematically illustrated structure of a first embodiment of the magnetic according to the invention pierceable filter 1 with a filter housing 2 and with two tunable and made of magnetizable material, in particular hexaferrite, existing resonator balls 3a, 3b.
- the entire filter housing 2 comprises two filter arms 4a, 4b, and a signal input 6a and a signal output 6b, wherein the resonator balls 3a, 3b are arranged side by side in the two filter arms 4a, 4b.
- Each of the two filter arms 4a, 4b includes a coplanar line 7 constructed on a substrate layer 5 and extending in the direction of an electrical connection 6, wherein the substrate layer 5, which preferably has a low dielectric constant, is arranged on the metallic bottom 10 of the filter arm 4a, 4b.
- the two adjoining and touching filter arms 4a, 4b are interconnected by a common coupling opening 8, wherein in each case a Resonatorkugel 3a, 3b is positioned on each side of the coupling opening 8 within the two filter arms 4a, 4b above the coplanar line 7.
- the coplanar line 7 has two outer line strips 27a, 27b and a middle line strip 28, which are located on the same side of the substrate layer 5 facing away from the metallic bottom 10 and have a short-circuit region 31 in the end region 30 of the filter arm 4a, 4b.
- the two outer conductor strips 27a, 27b and the middle one are located on the same side of the substrate layer 5 facing away from the metallic bottom 10 and have a short-circuit region 31 in the end region 30 of the filter arm 4a, 4b.
- Lead strip 28 conductively connected by a metal layer. Furthermore, in the short-circuit region 31, a plated-through hole 35 is provided, which passes through the metal layer through the substrate layer 5 with the Bottom 10 of the filter arm 4a, 4b and the filter housing 2 conductively connects.
- Line strips 28 and the non-conductive slots 29a, 29b are concentrated, wherein the current density in the longitudinal direction in the vicinity of the short-circuit region 31 has maximum values.
- the coplanar line 7 embedded in the metallic filter housing 2 a good guidance of the electromagnetic wave to be transported, as defined by the line geometry, is thus achieved.
- FIG. 2 shows a plan view of a schematically illustrated structure of a second exemplary embodiment of the magnetically tunable filter 1 according to the invention.
- a first, thin dividing wall 9 which extends between the respective substrate layers 5 of the filter arms 4a, 4b metallic bottom 10 of the filter housing 2 is sufficient.
- the thickness 15 is dimensioned with two arrows and z. B. between 10 .mu.m - 100 .mu.m, preferably about 50 microns is dimensioned, are the resonator 3 a, 3 b, which consist of a ferri-magnetic or a ferromagnetic material and a diameter of z. B.
- quartz carrier with the resonator sphere 3 a, 3 b is placed in the short-circuit region 31 of the coplanar line 7.
- the dashed lines which run parallel to the signal input 6a or to the signal output 6b, each indicate a second thin partition wall 19, which is added in this second embodiment of the magnetically tunable filter according to the invention compared to the embodiment shown in FIG. 1 and is described in more detail with reference to FIG. 3.
- FIG 3 shows a side view of a schematically illustrated structure of the second exemplary embodiment of the magnetically tunable filter 1 according to the invention with the first partition wall 9 arranged centrally relative to the two filter arms 4a, 4b and with the second partition wall 19, which in the preceding FIG Line was indicated.
- the height 11 of the first partition wall 9 is less than the total height 12 of the filter housing 2 and the filter arm 4a, 4b, so that this first partition wall 19 a direct visual connection between the two resonator balls 3a, 3b, both sides the first partition 9 are arranged prevented.
- the magnetically tunable filter according to the invention may instead of the first partition 9 within the common coupling opening 8 of the filter arms 4a, 4b also be mounted a diaphragm which extends from the bottom 10 of the filter housing 2 to the ceiling 16 of the filter housing 2 and an arbitrarily shaped and positioned Aperture has.
- the aperture can, for example, be circular, elliptical or rectangular or have the shape of a polygon.
- the second partition wall 19 is provided within the filter arms 4a, 4b and is perpendicular to the longitudinal direction of the coplanar line 7 and the first partition 9, the length 21 of the second partition 19 corresponding to the width 22 of a filter arm 4a, 4b and within the one filter arm 4a is positioned approximately in the region of a short-circuit wall 20b of the adjacent filter arm 4b, which is clearly visible in the plan view of FIG.
- Partition 19 is fixed in the embodiment of the ceiling 16 of the filter housing 2, wherein the height 23 of the second partition 19 is less than the distance 24 between the substrate layer 5 and the ceiling 16 of the filter housing 2, so that between a lower edge 25 of the second partition 19 and the substrate layer 5 with the coplanar line 7, a second gap 26 is formed with a substantially quadrangular profile.
- Fig. 4 shows a front view of a schematically illustrated structure of the second embodiment of the magnetically tunable filter 1 according to the invention with the first partition 9 and the second partitions 19.
- Both resonator balls 3a, 3b are mirror images of each other on both sides of the coupling opening 8 and this side and beyond first partition 9 is arranged.
- the center of the resonator ball 3a, 3b is located approximately above the line of symmetry of the middle line strip 28 of the coplanar line I 1 so that each Resonator ball 3a, 3b is in the maximum of the magnetic field and an optimal excitation of the desired resonant frequency via the magnetic field of the high frequency source can be carried out, wherein the selected for the positioning of the resonator 3a, 3b area characterized in that in this area the magnetic field maximum independently of the frequency of the incoming and outgoing electromagnetic wave occurs.
- the structure of the coplanar line 7, the z. B. has a characteristic impedance of 50 ⁇ , takes place on a substrate layer 5, which has a preferably low dielectric constant.
- the ball diameter of the resonator balls 3a, 3b with z. B. 300 ⁇ m significantly smaller than the wavelength of the incoming and outgoing wave.
- the excitation of interfering secondary modes is reduced because at a large wavelength, the magnetic field distribution in the spherical volume is more homogeneous than at a wavelength whose dimension is only slightly larger than the ball diameter of the resonator 3a, 3b.
- the first partition wall 9 between the two resonator balls 3a, 3b prevents the direct coupling of stray fields in the region of the resonator ball 3a, 3b, so that a high decoupling is obtained far away from the resonance.
- FIG. 5 shows a perspective view of a schematically illustrated structure of a filter arm 4a according to the second exemplary embodiment of the magnetically tunable filter 1 according to the invention with the two partition walls 9 and 19.
- This filter arm 4a forms one half of a cavity resonator or a connecting resonator 32 for a Hi 0 -Wellmode, where the walls of the connecting resonator 32 from the bottom 10 of the filter housing, the two second partitions 19, the two side walls 3 ⁇ a, 3 ⁇ b and the two short-circuit walls 20a, 20b of the filter arms 4a, 4b and the cover 16 of the filter housing 2 are formed.
- the through-connection 35 connects the metal layer of the coplanar line 7 to the metallic bottom 10 of the filter arm 4a.
- the coplanar line is designed in this area as a ⁇ / 4 transformer 34 to transmit the characteristic impedance of the input coplanar line 7 to the characteristic impedance of the coplanar line in the spherical region to adapt to the resonator ball.
- the coplanar line 7 shows a second embodiment of the end region of the coplanar line 7 of the magnetically tunable filter 1 according to the invention.
- the coplanar line is designed as a taper 33 in this region in order to adapt the characteristic impedance of the coplanar line 7 to the characteristic impedance of the connecting resonator 32 with the resonator sphere.
- FIG. 8 shows the simulated decoupling characteristic of the magnetically tunable filter 1 according to the invention in the non-resonant (insulation) case, where curve A is the magnitude of the scattering matrix element Sn and curve B is the frequency-dependent magnitude of the scattering matrix element Si 2 of FIG represented as a two-port filter according to the invention.
- the values of the curve B are in a range from -75 dB to -115 dB and prove that electromagnetic waves whose frequency lies outside the resonance frequency are very strongly attenuated by the filter 1 according to the invention.
- curve C shows the simulated course of the coupling (curve C) as a function of the resonance frequency of the magnetically tunable filter 1 according to the invention and the simulated loss of attenuation (curve D) of the H ⁇ o mode of a 2 mm wide waveguide with a length of 0.7 mm.
- Curve D shows that the frequency-dependent change in the attenuation of the filter 1 according to the invention increases with an increase
- Resonant frequency of approximately 17 GHz essentially corresponds to the frequency-dependent change in the attenuation of the H 0 modes in the coupling waveguide with the above-mentioned dimensions, which clearly shows that in the connecting resonator 32 in the case of resonance
- the absolute attenuation values in the case of resonance are between -3 dB and -7dB and thus are orders of magnitude smaller than the values in the decoupling case (isolation) shown in Fig. 8.
- Curve E shows the frequency-dependent curve of the absorption curve with an absorption maximum at 67.8 GHz and a
- Curve F shows the frequency-dependent curve of the transmission curve with a pronounced maximum at 67.8 GHz. It is clearly recognize that the frequency position of the absorption maximum and the transmission maximum agree very well.
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006030882 | 2006-07-04 | ||
| DE102006053416 | 2006-11-13 | ||
| DE102007001832A DE102007001832A1 (de) | 2006-07-04 | 2007-01-12 | Magnetisch durchstimmbares Filter mit Koplanarleitungen |
| PCT/EP2007/005927 WO2008003483A1 (de) | 2006-07-04 | 2007-07-04 | Magnetisch durchstimmbares filter mit koplanarleitungen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2036160A1 true EP2036160A1 (de) | 2009-03-18 |
| EP2036160B1 EP2036160B1 (de) | 2014-01-22 |
Family
ID=38806169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07765056.2A Active EP2036160B1 (de) | 2006-07-04 | 2007-07-04 | Magnetisch durchstimmbares filter mit koplanarleitungen |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8120449B2 (de) |
| EP (1) | EP2036160B1 (de) |
| DE (1) | DE102007001832A1 (de) |
| WO (1) | WO2008003483A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3368169A (en) | 1964-05-08 | 1968-02-06 | Stanford Research Inst | Tunable bandpass filter |
| DE1217002B (de) * | 1964-07-30 | 1966-05-18 | Siemens Ag | Abstimmbares Filter fuer sehr kurze elektro-magnetische Wellen, das mittels der magnetokristallinen Anisotropieeigenschaften abstimmbar ist |
| US3400343A (en) * | 1965-02-23 | 1968-09-03 | Physical Electronics Lab | Tunable bandpass filter |
| US3889213A (en) * | 1974-04-25 | 1975-06-10 | Us Navy | Double-cavity microwave filter |
| US4600906A (en) * | 1982-12-03 | 1986-07-15 | Raytheon Company | Magnetically tuned resonant circuit wherein magnetic field is provided by a biased conductor on the circuit support structure |
| US4888569A (en) * | 1988-05-23 | 1989-12-19 | Hewlett-Packard Company | Magnetically tuneable millimeter wave bandpass filter having high off resonance isolation |
| US4857871A (en) * | 1988-10-31 | 1989-08-15 | Harris David L | Magnetic field-tunable filter with plural section housing and method of making the same |
| GB9216915D0 (en) * | 1992-08-10 | 1992-09-23 | Applied Radiation Lab | Improved radio frequency filter |
| US5465417A (en) * | 1993-12-16 | 1995-11-07 | Hewlett-Packard Company | Integrated barium-ferrite tuned mixer for spectrum analysis to 60 GHz |
| US6563405B2 (en) * | 2001-06-21 | 2003-05-13 | Microsource, Inc. | Multi-resonator ferrite microstrip coupling filter |
-
2007
- 2007-01-12 DE DE102007001832A patent/DE102007001832A1/de not_active Withdrawn
- 2007-07-04 EP EP07765056.2A patent/EP2036160B1/de active Active
- 2007-07-04 US US12/279,092 patent/US8120449B2/en active Active
- 2007-07-04 WO PCT/EP2007/005927 patent/WO2008003483A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008003483A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007001832A1 (de) | 2008-01-10 |
| US20090039983A1 (en) | 2009-02-12 |
| EP2036160B1 (de) | 2014-01-22 |
| WO2008003483A1 (de) | 2008-01-10 |
| US8120449B2 (en) | 2012-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69823898T2 (de) | Hochfrequenzfilter | |
| DE102017103161B4 (de) | Antennenvorrichtung und Antennenarray | |
| DE102007005928B4 (de) | Übertragungsleitungsübergang | |
| DE69524673T3 (de) | Dielektrisches Filter | |
| DE1964670A1 (de) | Wellenleiter mit einem dielektrischen Traeger | |
| DE2726797A1 (de) | Mikrowellenbandfilter | |
| DE69805095T2 (de) | Mit verschiedenen oberflächen gekoppelter resonator | |
| DE69712802T2 (de) | Dielektrisches Filter | |
| DE69938626T2 (de) | Koaxialer hohlraumresonator | |
| DE10325595B3 (de) | Hochfrequenzfilter, insbesondere nach Art einer Duplexweiche | |
| DE3007580C2 (de) | Oszillator mit einem dielektrischen Resonator | |
| DE102015009221A1 (de) | Verbesserter abstimmbarer Dual-Band-Bandpassfilter | |
| EP2100343B1 (de) | Ferritfilter aus blendengekoppelten flossenleitungen | |
| DE68917373T2 (de) | Magnetisch abstimmbares Bandpassfilter. | |
| DE69112943T2 (de) | Übergangsstück zwischen elektromagnetischen Hohlleitern, insbesondere zwischen einem Rundhohlleiter und einem Koaxialhohlleiter. | |
| DE19915074A1 (de) | Dielektrischer Resonator und dielektrisches Filter mit einem solchen Resonator | |
| DE69715035T2 (de) | Mikrowellenresonator | |
| DE69932653T2 (de) | Dielektrisches Filter und dielektrischer Duplexer | |
| DE10214895A1 (de) | Resonatorbauelement, Filter, Duplexer und Kommunikationsvorrichtung, die dieselben verwendet | |
| DE10143689A1 (de) | Filter, Multiplexer und Kommunikationsvorrichtung | |
| DE69822574T2 (de) | Dielektrisches Filter, Duplexer, und Kommunikationssystem | |
| DE60110033T2 (de) | Bandpassfilter mit einer kompakten dielektrischen Struktur aus halbwellen Resonatoren und dazwischenliegenden evanescenten Wellenleitern | |
| DE2828047C2 (de) | Frequenzabhängiges Koppelsystem | |
| EP1183752B1 (de) | Polarisationsweiche | |
| EP2036160B1 (de) | Magnetisch durchstimmbares filter mit koplanarleitungen |
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 |
|
| 17P | Request for examination filed |
Effective date: 20080707 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: REHNER, ROBERT Inventor name: TREMMEL, CLAUS Inventor name: SCHMIDT, LORENZ-PETER Inventor name: SCHNEIDERBANGER, DIRK Inventor name: AIGLE, MICHAEL DR. Inventor name: STERNS, MICHAEL Inventor name: MARTIUS, SIGFRIED |
|
| 17Q | First examination report despatched |
Effective date: 20090424 |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20130912 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502007012731 Country of ref document: DE Effective date: 20140306 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502007012731 Country of ref document: DE |
|
| 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 |
Effective date: 20141023 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502007012731 Country of ref document: DE Effective date: 20141023 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230525 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20250722 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20250724 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20250723 Year of fee payment: 19 |