WO2011154643A1 - Filtre a resonateur patch accordable - Google Patents
Filtre a resonateur patch accordable Download PDFInfo
- Publication number
- WO2011154643A1 WO2011154643A1 PCT/FR2011/051253 FR2011051253W WO2011154643A1 WO 2011154643 A1 WO2011154643 A1 WO 2011154643A1 FR 2011051253 W FR2011051253 W FR 2011051253W WO 2011154643 A1 WO2011154643 A1 WO 2011154643A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slots
- filter
- resonator
- triangle
- varying
- Prior art date
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
- H01P1/207—Hollow waveguide filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
- H01P7/082—Microstripline resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
- H01P7/088—Tunable resonators
Definitions
- the present invention relates to a tunable patch resonator filter.
- a patch resonator of the type described in the aforementioned article comprises, on the underside side of a dielectric substrate 1, a metal plane 2, commonly a ground plane, and on the side the upper face, a printed metallization or patch 4, of circular shape.
- the printed metallization or patch is connected, in the case of a filter, between an input microstrip 6 and an output microstrip 7, shown very schematically.
- the patch may be provided with slots 11 to 14 extending substantially radially to the periphery of the patch. These slots have the same or different lengths. The bandwidth and center frequency of the resonator are modified according to the characteristics of the slots.
- This article also proposes to have the conden ⁇ sados 21 to 24 across the slots, for example substantially in the middle position. And this article mentions that, if the capacitors 21 to 24 are implemented by varactances, it is possible to obtain a remotely controllable frequency and bandwidth device, by adjusting the polarization voltage of the varactances, which makes it possible to realize a remotely controllable filter.
- An object of an embodiment of the present invention is to provide a patch resonator filter which is adjustable in a predetermined and predictable manner.
- a more particular object of the present invention is to provide such a filter in which one can adjust in a chosen way or the bandwidth, or the central band a filter, and in which it is possible to operate these two settings independently of one another.
- an embodiment of the present invention provides a triangular triangle pattern resonator, two symmetrical sides of the triangle with respect to an axis being respectively associated with an input coupler and a output coupler, comprising star-shaped slots with three branches, a first slot extending along said axis, on either side of the center of the triangle, the two other slots extending symmetrically from the base of the first slot, none of the branches opening, an adjustable capacitor being connected across each of the slots.
- the triangle is an equilateral triangle.
- each adjustable capacitor comprises a varactance.
- a method of adjusting a filter comprising a resonator as above comprises, for adjusting the high cutoff frequency of the resonator, the step of varying the capacitance of the resonator. capacitor disposed on the first slot.
- a method of adjusting a filter comprising a resonator as above comprises, to vary the low cutoff frequency, the step of varying the capacity of the capacitors associated with said two other slots.
- a method of adjusting a filter comprising a resonator as above comprises, for varying the bandwidth, the step of varying the capacitances of the all capacitors, the sum of the first condensed capacity ⁇ tor and one of the other two capacitors being kept constant.
- a method of adjusting a filter comprising a resonator as above comprises, to move the bandwidth, the step of varying the capabilities of all the capacitors, the difference in capacitance of the first capacitor and one of the other two capacitors being kept constant.
- Figures 1A and 1B are a top view and a sectional view along the plane B-B of Figure 1A of a circular patch resonator;
- Figures 2A and 2B are a top view and a detail view of a triangular patch resonator.
- FIGS. 3 to 7 represent curves that are useful for explaining the operation of the tunable triangular patch resonator of FIG. 2A.
- FIG. 2A is a top view of a metal pattern or triangular patch resonator associated with an input coupler 31 and an output coupler 32.
- the input and output couplers are represented in form microstrip arranged parallel to two sides of the triangular resonator. Note however that any system of neck ⁇ range of RF input and output signals can be used.
- An axis 35 of the orthogonal triangular resonator is defined at the side not associated with an input or output coupler, which will be referred to as the base side 36.
- the triangle is symmetrical with respect to the axis 35, and is preferably equilateral.
- the slot 41 extends on either side of the center of the triangle and does not open out of the metallization constituting the resonator
- At the lower side of the slot 41 there are two lateral slots 42 and 43 which are symmetrical with respect to the axis 35.
- These slots may be, as shown, rectilinear and orthogonal to the slot 41. may also have any other shape, for example being in an arc, their ends being directed towards the base 36, or rectilinear but inclined with their ends pointing towards the base 36.
- the effect of these slots is to reduce the resonance frequency of the two fundamental modes of resonance of the triangular resonator.
- adjustable capacitors 51, 52, 53 are disposed across slots 41, 42 and 43 in a middle portion of each of the slots. These capacitors are for example arranged between the first and the second third of the length of each of the slots.
- the capacitor 51 has a value Cl.
- Capacitors 52 and 53 preferably have the same value C2 and are arranged symmetrically.
- Fig. 2B is an enlarged view of a portion of the slot 41 and shows a possible embodiment of an adjustable voltage-controlled capacitor 51.
- the variable capacitor itself is realized by a varactance 61.
- the varactance is in series with a capacitor 62, for example consisting of a diode in reverse with respect to the diode 61.
- connection point of the varactor 61 and the capacitor 62 is connected to an adjustable DC voltage source VI through a resistor 63.
- the metal pattern 30 is connected to the mass by a resistor 65 to provide a bias reference. Resistors 63 and 65 have high values to prevent RF signal loss.
- GaAs varactances are known whose capacitance can vary significantly for a bias voltage varying between 0 and 20 volts.
- FIGS. 3 to 7 illustrate various characteristics of the filter, simulated and verified, in the case of a triangular patch resonator filter having the following characteristics:
- FIG. 3 shows transmission curves T in dB of the filter for a constant value of capacitors C2 (0.22 pF) and variable values of capacitance C1 of 0.29 to 0.22 pF, that is, say for a polarization voltage C2 capacitance of 20 volts and for bias voltages of capacitance Cl varying from 8 to 20 volts.
- the various curves 71 to 75 are such that the low cut-off frequency (approximately 3.1 GHz) does not substantially vary while the high cut-off frequency varies substantially from 3.6 to 3.8 GHz.
- the capacitance Cl decreases, the filter bandwidth increases without the low cutoff frequency varying.
- FIG. 4 shows transmission curves 81 to 85 for a constant value (0.29 pF) of capacitance C1 and variable values, from 0.22 to 0.37 pF, of capacitors C2.
- the two capacitors 52 and 53 of the same capacitance C2 are varied together.
- the high cut-off frequency does not vary significantly. not yet and remains at a value close to 3.7 GHz while the low cutoff frequency varies from 3.1 to substantially 2.9 GHz.
- the bandwidth of the filter increases without the high cutoff frequency varying.
- the transmission curve of a filter can thus be modified in a determinable manner.
- FIG. 7 shows the central frequency on the abscissa of the triangular pattern resonator as a function of the average value (C1 + C2) / 2 of the aforementioned C1 and C2 capacities. It can be seen that this characteristic is substantially linear, that is, the results are predictable, as illustrated in Figure 5.
- a patch filter whose characteristics of central frequency variability and bandwidth are determinable. It is thus possible to remotely control the transmission curve of a filter by acting on the bias voltages of adjustable capacitors, or by remotely controlling other adjustable capacitors, which can be useful for a filter installed in an inaccessible place, for example a satellite.
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112012031229A BR112012031229A2 (pt) | 2010-06-08 | 2011-06-01 | "filtro com ressonador patch sintonizável" |
EP11728342.4A EP2580804A1 (fr) | 2010-06-08 | 2011-06-01 | Filtre a resonateur patch accordable |
US13/702,925 US20130200962A1 (en) | 2010-06-08 | 2011-06-01 | Tunable patch resonator filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1054507A FR2961025A1 (fr) | 2010-06-08 | 2010-06-08 | Filtre a resonateur patch accordable |
FR1054507 | 2010-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011154643A1 true WO2011154643A1 (fr) | 2011-12-15 |
Family
ID=43466624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2011/051253 WO2011154643A1 (fr) | 2010-06-08 | 2011-06-01 | Filtre a resonateur patch accordable |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130200962A1 (fr) |
EP (1) | EP2580804A1 (fr) |
BR (1) | BR112012031229A2 (fr) |
FR (1) | FR2961025A1 (fr) |
WO (1) | WO2011154643A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3016707A1 (fr) * | 2014-01-23 | 2015-07-24 | St Microelectronics Tours Sas | Circuit de commande d'un condensateur de capacite reglable par polarisation |
CN105914434A (zh) * | 2016-05-09 | 2016-08-31 | 南京理工大学 | 一种三角形三模带通滤波器 |
CN113381144B (zh) * | 2021-06-07 | 2022-03-11 | 南京智能高端装备产业研究院有限公司 | 一种基于等边三角形贴片的高性能平衡带通滤波器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3395754B2 (ja) * | 2000-02-24 | 2003-04-14 | 株式会社村田製作所 | デュアルモード・バンドパスフィルタ |
JP3395753B2 (ja) * | 2000-02-24 | 2003-04-14 | 株式会社村田製作所 | バンドパスフィルタの製造方法及びバンドパスフィルタ |
US6563404B2 (en) * | 2001-06-13 | 2003-05-13 | Space Systems/Loral, Inc. | Voltage tunable patch filter element with dielectrically loaded slot |
CN102739161B (zh) * | 2011-04-11 | 2015-03-04 | 南通大学 | 一种宽带频率可调环形谐振器 |
-
2010
- 2010-06-08 FR FR1054507A patent/FR2961025A1/fr not_active Withdrawn
-
2011
- 2011-06-01 BR BR112012031229A patent/BR112012031229A2/pt not_active IP Right Cessation
- 2011-06-01 WO PCT/FR2011/051253 patent/WO2011154643A1/fr active Application Filing
- 2011-06-01 US US13/702,925 patent/US20130200962A1/en not_active Abandoned
- 2011-06-01 EP EP11728342.4A patent/EP2580804A1/fr not_active Withdrawn
Non-Patent Citations (6)
Title |
---|
ARIANA L C SERRANO ET AL: "A tunable bandpass patch filter with varactors", MICROWAVE SYMPOSIUM DIGEST (MTT), 2010 IEEE MTT-S INTERNATIONAL, IEEE, PISCATAWAY, NJ, USA, 23 May 2010 (2010-05-23), pages 1752 - 1755, XP031714305, ISBN: 978-1-4244-6056-4 * |
ARIANA L. C. SERRANO ET AL.: "A Tunable Bandpass Patch Filter", IEEE PROCEEDINGS INTERNATIONAL WORKSHOP ON MICROWAVE FILTERS, November 2009 (2009-11-01) |
CHIEN-HUNG CHEN ET AL: "A miniature dual-mode triangular patch bandpass filter using Al2O3 substrate", ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, 2008. AP-S 2008. IEEE, IEEE, PISCATAWAY, NJ, USA, 5 July 2008 (2008-07-05), pages 1 - 4, XP031342889, ISBN: 978-1-4244-2041-4 * |
WEILIANG HU ET AL: "Microstrip Bandpass Filters Using Degenerate Dual-Modes of Slotted Equilateral Triangular Patch Resonators", MICROWAVE CONFERENCE PROCEEDINGS, 2005. APMC 2005. ASIA-PACIFIC CONFER ENCE PROCEEDINGS SUZHOU, CHINA 04-07 DEC. 2005, PISCATAWAY, NJ, USA,IEEE, vol. 1, 4 December 2005 (2005-12-04), pages 1 - 4, XP010901789, ISBN: 978-0-7803-9433-9, DOI: DOI:10.1109/APMC.2005.1606290 * |
WHITE C R ET AL: "Single-and Dual-Polarized Tunable Slot-Ring Antennas", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 57, no. 1, 1 January 2009 (2009-01-01), pages 19 - 26, XP011253008, ISSN: 0018-926X * |
XIAO JIANKANG ET AL: "Triangular Patch Resonator Bandpass Filter with Higher Order Mode Operation", MICROWAVE CONFERENCE, 2008 CHINA-JAPAN JOINT, IEEE, PISCATAWAY, NJ, USA, 10 September 2008 (2008-09-10), pages 530 - 533, XP031417333, ISBN: 978-1-4244-3821-1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2961025A1 (fr) | 2011-12-09 |
EP2580804A1 (fr) | 2013-04-17 |
BR112012031229A2 (pt) | 2016-10-25 |
US20130200962A1 (en) | 2013-08-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2345104B1 (fr) | Systeme d'antenne dipole differentielle a structure rayonnante coplanaire et dispositif d'emission/reception | |
EP0127527A1 (fr) | Procédé d'ajustage notamment en fréquence d'un filtre imprimé en ligne "microbandes", et filtre obtenu par ce procédé | |
EP0348283A1 (fr) | Multiplicateur de fréquence à rang de multiplication programmable | |
FR2922696A1 (fr) | Resonateur a ondes de lamb | |
EP0047203A1 (fr) | Filtre hyperfréquence à résonateur diélectrique, accordable dans une grande largeur de bande | |
FR2616594A1 (fr) | Dispositif filtrant hyperfrequence accordable a resonateur dielectrique, et applications | |
EP2466684B1 (fr) | Système d'antenne en diversité | |
EP2202838B1 (fr) | Condensateur commuté compact mems | |
EP2580804A1 (fr) | Filtre a resonateur patch accordable | |
EP1699108B1 (fr) | Antenne du type à surface(s) rayonnante(s) plane(s) commutable(s) et terminal de communication comportant cette antenne | |
EP3017499A1 (fr) | Filtre rejecteur de bande | |
EP3235058B1 (fr) | Antenne fil-plaque ayant un toit capacitif incorporant une fente entre la sonde d'alimentation et le fil de court-circuit | |
EP2178152A1 (fr) | Dispositif de commutation électronique pour signaux a haute fréquence | |
EP0467818A1 (fr) | Elément de transition entre guides d'ondes électromagnétiques, notamment entre un guide d'ondes circulaire et un guide d'ondes coaxial | |
WO1993000718A1 (fr) | Dispositif de filtrage coupe-bande hyperfrequence accordable | |
FR2904492A1 (fr) | Circuit de filtrage dote de resonateurs acoustiques | |
EP0446108A1 (fr) | Résonateur diélectrique à rubans métalliques micro-ondes et dispositif utilisant un tel résonateur | |
WO2009077529A2 (fr) | Antenne active tres large bande pour radar passif | |
EP0736971A1 (fr) | Circuit réjecteur à fréquence de réjection réglable | |
EP2659544A1 (fr) | Filtre variable par condensateur commute au moyen de composants mems | |
FR2607640A1 (fr) | Filtre accorde a couches minces | |
FR2906085A1 (fr) | Antenne a large bande d'adaptation | |
EP0337825B1 (fr) | Filtre coupe-bande hyperfréquence en technologie micro-bande | |
WO2013121118A2 (fr) | Antenne large bande et procede d'augmentation de la bande passante d'une antenne spirale plane | |
CA2363304A1 (fr) | Microcomposant incluant un composant capacitif |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11728342 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011728342 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13702925 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112012031229 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112012031229 Country of ref document: BR Kind code of ref document: A2 Effective date: 20121207 |