JP6546217B2 - 低損失の可変無線周波数フィルタ - Google Patents
低損失の可変無線周波数フィルタ Download PDFInfo
- Publication number
- JP6546217B2 JP6546217B2 JP2017113123A JP2017113123A JP6546217B2 JP 6546217 B2 JP6546217 B2 JP 6546217B2 JP 2017113123 A JP2017113123 A JP 2017113123A JP 2017113123 A JP2017113123 A JP 2017113123A JP 6546217 B2 JP6546217 B2 JP 6546217B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- band
- frequency
- tuning
- resonant
- 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.)
- Active
Links
- 230000004044 response Effects 0.000 claims description 69
- 230000005540 biological transmission Effects 0.000 claims description 67
- 230000008878 coupling Effects 0.000 claims description 38
- 238000010168 coupling process Methods 0.000 claims description 38
- 238000005859 coupling reaction Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 16
- 238000013461 design Methods 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 7
- 239000002887 superconductor Substances 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000000206 photolithography Methods 0.000 claims description 3
- 238000002164 ion-beam lithography Methods 0.000 claims 2
- 241000287463 Phalacrocorax Species 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 33
- 238000003780 insertion Methods 0.000 description 31
- 230000037431 insertion Effects 0.000 description 31
- 238000013459 approach Methods 0.000 description 14
- 239000011159 matrix material Substances 0.000 description 13
- 238000004891 communication Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- BCCGKQFZUUQSEX-WBPXWQEISA-N (2r,3r)-2,3-dihydroxybutanedioic acid;3,4-dimethyl-2-phenylmorpholine Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O.OC(=O)[C@H](O)[C@@H](O)C(O)=O.O1CCN(C)C(C)C1C1=CC=CC=C1 BCCGKQFZUUQSEX-WBPXWQEISA-N 0.000 description 7
- 235000008694 Humulus lupulus Nutrition 0.000 description 7
- 238000000605 extraction Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- -1 and in particular Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 239000008978 jiashen Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/462—Microelectro-mechanical filters
- H03H9/465—Microelectro-mechanical filters in combination with other electronic elements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/392—Floor-planning or layout, e.g. partitioning or placement
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/394—Routing
-
- 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
-
- 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
- H01P1/20327—Electromagnetic interstage coupling
- H01P1/20336—Comb or interdigital filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/06—Frequency selective two-port networks including resistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1791—Combined LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/462—Microelectro-mechanical filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6406—Filters characterised by a particular frequency characteristic
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/06—Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/20—Configuration CAD, e.g. designing by assembling or positioning modules selected from libraries of predesigned modules
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/10—Noise analysis or noise optimisation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H2007/013—Notch or bandstop filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H2009/02165—Tuning
- H03H2009/02173—Tuning of film bulk acoustic resonators [FBAR]
- H03H2009/02188—Electrically tuning
- H03H2009/02204—Electrically tuning operating on an additional circuit element, e.g. applying a tuning DC voltage to a passive circuit element connected to the resonator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/01—Tuned parameter of filter characteristics
- H03H2210/012—Centre frequency; Cut-off frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/02—Variable filter component
- H03H2210/025—Capacitor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/03—Type of tuning
- H03H2210/033—Continuous
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1758—Series LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/54—Modifications of networks to reduce influence of variations of temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49016—Antenna or wave energy "plumbing" making
- Y10T29/49018—Antenna or wave energy "plumbing" making with other electrical component
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- General Engineering & Computer Science (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Architecture (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Filters And Equalizers (AREA)
Description
S11はフィルタの入力反射係数であり、S21は前方伝送係数であり、sは正規化周波数であり、F及びPは、生成された複素周波数sのN次多項式(Nは共振素子の数である)であり、及び、εは、等リップル反射減衰量を規定する定数である。係数S11及びS21の各々は、分子がN位を有するので、零点の数Nまで有することができる。係数S11及びS21がすべてのN零点を有する場合、フィルタ応答は完全な楕円とみなされる。フィルタのモデル化のさらに詳細な検討は、Jia−Shen G.Hong及びM.J.Lancasterの”Microstrip Filters for RF/Microwave Application,” Wiley−Interscience 2001で説明されている。正規化周波数s=iwは、方程式
に従って実周波数にマッピングされ、この場合、fは実周波数であり、fcは中心周波数であり、及び、BWはフィルタの帯域幅である。正規化周波数の実周波数への変換のさらに詳細な検討は、G.Matthaei,L.Young及びE.M.T.Jonesの”Microwave Filters,Impedance−Matching Networks,and Coupling Structures,”McGraw−Hill(1964)で説明されている。
Claims (26)
- 入力(14)及び出力(16)を有する信号伝送路(12)と、
前記入力(14)及び前記出力(16)の間で前記信号伝送路(12)に沿って配置され、前記信号伝送路(12)に接続される複数の共振素子と、
前記共振素子(18)をともに結合して、前記共振素子(18)の各々の周波数に対応する複数の伝送零点(30)及び前記伝送零点(30)同士の間の少なくとも1つのサブバンド(36)を有する阻止帯域(32)を形成するための複数の非共振素子(22)と、
を備えており、
前記非共振素子(22)が、阻止帯域(32)内に少なくとも1つの反射零点(34)を配置して前記少なくとも1つのサブバンド(36)のうちの1つに通過帯域(38)を形成するサセプタンス値を有する、無線周波数(RF)フィルタ(10)。 - 前記少なくとも1つのサブバンド(36)が複数のサブバンド(36)を備える、請求項1に記載のRFフィルタ(10)。
- 前記少なくとも1つの反射零点(34)が複数の反射零点(34)を備える、請求項1に記載のRFフィルタ(10)。
- 各々の前記共振素子(18)が薄膜集中素子構造を備える、請求項1に記載のRFフィルタ(10)。
- 前記薄膜集中素子構造が高温超電導体(HTS)を備える、請求項4に記載のRFフィルタ(10)。
- 前記阻止帯域(32)がマイクロ波周波数帯域にある、請求項1に記載のRFフィルタ(10)。
- 前記マイクロ波周波数帯域が800乃至900MHzである、請求項6に記載のRFフィルタ(10)。
- 前記マイクロ波周波数帯域が1800乃至2200MHzである、請求項6に記載のRFフィルタ(10)。
- 前記各々の共振素子(18)が音響共振器を備える、請求項1に記載のRFフィルタ(10)。
- 前記複数の共振素子(18)が基板(44)上に配置され、
前記RFフィルタ(10)が、さらに、前記基板(44)上に配置され前記少なくとも1つの共振素子(18)にそれぞれ電気的に接続された少なくとも1つの同調素子(40、42、52)を備えており、
前記少なくとも1つの同調素子(40、42、52)の各々の一部が、前記基板(44)から取り外されて前記各々の共振素子(18)の周波数を修正するよう構成されている、請求項1に記載のRFフィルタ(10)。 - 前記少なくとも1つの同調素子(40、42、52)が、前記共振素子(18)の周波数を修正して周波数範囲に沿う前記阻止帯域(32)を前記通過帯域(38)に同時に移動するよう構成された複数の同調素子(40、42、52)を備える、請求項10に記載のRFフィルタ(10)。
- 前記同調素子(40、42、52)の各々の一部が、レーザ、ダイヤモンドスクライブ、集束イオンビーム、又はフォトリソグラフィを介して前記基板(44)から取り外されるよう構成されている、請求項10に記載のRFフィルタ(10)。
- 前記同調素子(40、42、52)の各々が、取り外すことにより前記各々の共振素子(18)の分路キャパシタンスを低減し得る1又はそれ以上のタブ(52)を備える、請求項10に記載のRFフィルタ(10)。
- 前記1又はそれ以上のタブ(52)が、前記各々の共振素子(18)のエッジに結合されたタブ(52)のアレイを備える、請求項13に記載のRFフィルタ(10)。
- 前記タブ(52)のアレイが、同調範囲及び最低の同調分解能を規定するサイズを変える分路キャパシタンス素子の二元配列を与えるようにセットされるサイズ及び位置を有する、請求項14に記載のRFフィルタ(10)。
- 前記同調素子(40、42、52)の各々が、前記各々の共振素子(18)の分路キャパシタンスを減少させるためにトリムされるよう構成された音叉(40、42)を備える、請求項10に記載のRFフィルタ(10)。
- 前記同調素子(40、42、52)の各々の一部を除去することによって、前記各々の共振素子(18)の周波数を修正するステップを備える、請求項10に記載のRFフィルタ(10)の同調方法。
- 前記同調素子(40、42、52)の各々の一部が前記基板(44)から除去されることによって、前記各々の共振素子(18)の周波数を修正し、前記少なくとも1つの反射零点(34)に対する前記阻止帯域(32)に沿う前記各々の共振素子(18)の周波数に対応する前記伝送零点(30)を移動する、請求項17に記載の方法。
- 前記同調素子(40、42、52)の各々の一部が、レーザ、ダイヤモンドスクライブ、集束イオンビーム、又はフォトリソグラフィを介して前記基板(44)から取り外される、請求項17に記載の方法。
- 前記同調素子(40、42、52)の各々が、前記各々の共振素子(18)の分路キャパシタンスを低減するために取り外される1又はそれ以上のタブ(52)を備える、請求項17に記載の方法。
- 前記1又はそれ以上のタブ(52)が、前記各々の共振素子のエッジに結合されたタブ(52)のアレイを備える、請求項20に記載の方法。
- 前記タブ(52)のアレイが、同調範囲及び最低の同調分解能を規定するサイズを変える分路キャパシタンス素子の二元配列を与えるようにセットされるサイズ及び位置を有する、請求項21に記載の方法。
- 前記同調素子(40、42、52)の各々が、前記各々の共振素子(18)の分路キャパシタンスを減少させるためにトリムされる音叉(40、42)を備える、請求項17に記載の方法。
- 1組の測定データを生成するためにフィルタ(10)の応答を測定するステップと、
前記1組の測定データを解析して最適化すべき1又はそれ以上のフィルタ設計パラメータを抽出するステップと、
前記1又はそれ以上のフィルタ設計パラメータを最適化して、所望のフィルタ応答を実現するステップと、
最適化された前記1又はそれ以上のフィルタ設計パラメータに基づいて、抽出されたパラメータと最適化されたパラメータとの差分を特定するステップと、
特定された差分に基づいて前記非共振素子(22)のうちの1つを変えることによって前記フィルタを同調し、前記阻止帯域(32)に沿う各々の前記反射零点(34)を選択的に移動させ、前記サブバンド(36)のうちの選択された1つの中で前記通過帯域(38)を移動させるステップと、を備える、請求項1に記載のRFフィルタ(10)の同調方法。 - 前記フィルタ(10)の応答が、前記RFフィルタ(10)の予期される動作温度で測定される、請求項24に記載の方法。
- 前記1又はそれ以上のフィルタ設計パラメータが、共振器周波数及び共振器対共振器のカップリング値の一方又は双方を備える、請求項24に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US93746207P | 2007-06-27 | 2007-06-27 | |
US14/214,249 US8922294B2 (en) | 2006-11-17 | 2014-03-14 | Low-loss tunable radio frequency filter |
US14/214,249 | 2014-03-14 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014258506A Division JP6158780B2 (ja) | 2014-03-14 | 2014-12-22 | 低損失の可変無線周波数フィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017153158A JP2017153158A (ja) | 2017-08-31 |
JP6546217B2 true JP6546217B2 (ja) | 2019-07-17 |
Family
ID=40186063
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010515202A Expired - Fee Related JP5671717B2 (ja) | 2007-06-27 | 2008-06-27 | 低損失同調型無線周波数フィルタ |
JP2014239915A Active JP6532221B2 (ja) | 2007-06-27 | 2014-11-27 | 低損失同調型無線周波数フィルタ |
JP2017113123A Active JP6546217B2 (ja) | 2007-06-27 | 2017-06-08 | 低損失の可変無線周波数フィルタ |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010515202A Expired - Fee Related JP5671717B2 (ja) | 2007-06-27 | 2008-06-27 | 低損失同調型無線周波数フィルタ |
JP2014239915A Active JP6532221B2 (ja) | 2007-06-27 | 2014-11-27 | 低損失同調型無線周波数フィルタ |
Country Status (8)
Country | Link |
---|---|
US (11) | US7639101B2 (ja) |
EP (1) | EP2168202B1 (ja) |
JP (3) | JP5671717B2 (ja) |
KR (2) | KR101651383B1 (ja) |
CN (3) | CN101689692B (ja) |
DE (1) | DE102014119624B4 (ja) |
GB (1) | GB2524133A (ja) |
WO (2) | WO2009003190A1 (ja) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101541189B1 (ko) | 2005-11-18 | 2015-07-31 | 레저넌트 인크. | 저손실의 튜너블 무선 주파수 필터 |
US7639101B2 (en) | 2006-11-17 | 2009-12-29 | Superconductor Technologies, Inc. | Low-loss tunable radio frequency filter |
US8902020B2 (en) * | 2009-07-27 | 2014-12-02 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Resonator filter with multiple cross-couplings |
KR101391399B1 (ko) * | 2010-06-29 | 2014-05-28 | 숭실대학교산학협력단 | Crlh 구조의 대역저지 여파기 및 그 제조 방법 |
WO2012025946A1 (en) * | 2010-08-25 | 2012-03-01 | Commscope Italy S.R.L. | Tunable bandpass filter |
US20130154913A1 (en) | 2010-12-16 | 2013-06-20 | Siemens Corporation | Systems and methods for a gaze and gesture interface |
WO2012151650A1 (en) * | 2011-05-12 | 2012-11-15 | Research In Motion Limited | Method and apparatus for interference measurement and response |
US8830011B2 (en) * | 2011-10-27 | 2014-09-09 | Taiwan Semiconductor Manufacturing Co., Ltd. | Band-pass filter using LC resonators |
JP6366597B2 (ja) * | 2012-11-15 | 2018-08-01 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | コイル・ケーブルおよびトラップの温度および/またはひずみを監視する分散式センサーに関わるmri |
US9208274B2 (en) | 2013-03-15 | 2015-12-08 | Resonant Inc. | Network synthesis design of microwave acoustic wave filters |
US9038005B2 (en) | 2013-03-15 | 2015-05-19 | Resonant Inc. | Network synthesis design of microwave acoustic wave filters |
US8990742B2 (en) | 2013-03-15 | 2015-03-24 | Resonant Inc. | Network synthesis design of microwave acoustic wave filters |
US8751993B1 (en) * | 2013-03-15 | 2014-06-10 | Resonant Llc | Element removal design in microwave filters |
US9325294B2 (en) | 2013-03-15 | 2016-04-26 | Resonant Inc. | Microwave acoustic wave filters |
US9178487B2 (en) * | 2013-06-28 | 2015-11-03 | Nokia Technologies Oy | Methods and apparatus for signal filtering |
JP2015109174A (ja) * | 2013-12-04 | 2015-06-11 | セイコーエプソン株式会社 | 放電灯駆動装置、光源装置、プロジェクター、及び放電灯駆動方法 |
JP6158780B2 (ja) * | 2014-03-14 | 2017-07-05 | レゾナント インコーポレイテッドResonant Inc. | 低損失の可変無線周波数フィルタ |
DE102014111904A1 (de) * | 2014-08-20 | 2016-02-25 | Epcos Ag | Abstimmbares HF-Filter mit Parallelresonatoren |
DE102014111912A1 (de) | 2014-08-20 | 2016-02-25 | Epcos Ag | HF-Filter |
DE102014111909B3 (de) * | 2014-08-20 | 2016-02-04 | Epcos Ag | Abstimmbares HF-Filter mit Serienresonatoren |
TWI540850B (zh) * | 2015-04-02 | 2016-07-01 | 啟碁科技股份有限公司 | 無線通訊裝置與其濾波器 |
CN106160689B (zh) * | 2015-04-15 | 2018-09-04 | 启碁科技股份有限公司 | 无线通信装置与其滤波器 |
US10594355B2 (en) | 2015-06-30 | 2020-03-17 | Skyworks Solutions, Inc. | Devices and methods related to radio-frequency filters on silicon-on-insulator substrate |
CN105244572B (zh) * | 2015-10-28 | 2019-07-09 | 中国电子科技集团公司第十四研究所 | 一种基于切比雪夫阻抗变换网络技术的滤波器设计方法 |
US9405875B1 (en) * | 2015-11-13 | 2016-08-02 | Resonant Inc. | Simulating effects of temperature on acoustic microwave filters |
MY192162A (en) | 2015-11-23 | 2022-08-03 | Anlotek Ltd | Variable filter |
EP3403327A1 (en) * | 2016-01-15 | 2018-11-21 | Telefonaktiebolaget LM Ericsson (publ.) | Miniature tunable filters |
US9939477B2 (en) * | 2016-06-24 | 2018-04-10 | International Business Machines Corporation | On-demand detection of electromagnetic disturbances using mobile devices |
US9882792B1 (en) * | 2016-08-03 | 2018-01-30 | Nokia Solutions And Networks Oy | Filter component tuning method |
CN107689803B (zh) * | 2016-08-05 | 2020-12-15 | 株式会社村田制作所 | 高频电路以及通信装置 |
US10218210B2 (en) * | 2016-09-29 | 2019-02-26 | Intel Corporation | Adaptive impedance control for wireless charging |
EP3635865A1 (en) | 2017-05-24 | 2020-04-15 | Anlotek Limited | Apparatus and method for controlling a resonator |
CN109819299B (zh) * | 2017-11-22 | 2021-03-05 | 华为技术有限公司 | 一种高通滤波电路及高通滤波器、数字电视接收终端 |
CN108170922B (zh) * | 2017-12-21 | 2021-05-14 | 中国地质大学(武汉) | 一种微波滤波器的辅助调试方法、设备及存储设备 |
DE102018101219A1 (de) * | 2018-01-19 | 2019-07-25 | RF360 Europe GmbH | Adaptives HF-Filter und Verfahren zum Schalten eines adaptiven HF-Filters |
KR101993141B1 (ko) | 2018-05-17 | 2019-06-26 | (주)에드모텍 | 반사손실 특성 및 주파수억제 특성을 개선한 가변필터 |
JP6939763B2 (ja) * | 2018-12-25 | 2021-09-22 | 株式会社村田製作所 | マルチプレクサ、高周波フロントエンド回路、および通信装置 |
JP6889413B2 (ja) * | 2018-12-25 | 2021-06-18 | 株式会社村田製作所 | マルチプレクサ、高周波フロントエンド回路、および通信装置 |
CN109687834B (zh) * | 2019-01-25 | 2020-11-27 | 吉林大学 | 多阶传输线和短路线的切比雪夫滤波性阻抗变换器及方法 |
US11277110B2 (en) | 2019-09-03 | 2022-03-15 | Anlotek Limited | Fast frequency switching in a resonant high-Q analog filter |
US11646760B2 (en) | 2019-09-23 | 2023-05-09 | Ticona Llc | RF filter for use at 5G frequencies |
CN110661168A (zh) * | 2019-10-18 | 2020-01-07 | 北方工业大学 | 通阻带可切换的射频光子滤波器 |
EP4070171A1 (en) | 2019-12-05 | 2022-10-12 | Anlotek Limited | Use of stable tunable active feedback analog filters in frequency synthesis |
US11323079B2 (en) | 2020-02-28 | 2022-05-03 | Qualcomm Incorporated | Stability improvement circuit for radio frequency (RF) power amplifiers |
EP3926828A1 (en) | 2020-06-15 | 2021-12-22 | Anlotek Limited | Tunable bandpass filter with high stability and orthogonal tuning |
US11728784B2 (en) | 2020-10-05 | 2023-08-15 | Murata Manufacturing Co., Ltd. | Transversely-excited film bulk acoustic resonator matrix filters with split die sub-filters |
US11405019B2 (en) | 2020-10-05 | 2022-08-02 | Resonant Inc. | Transversely-excited film bulk acoustic resonator matrix filters |
US11929733B2 (en) | 2020-10-05 | 2024-03-12 | Murata Manufacturing Co., Ltd. | Transversely-excited film bulk acoustic resonator matrix filters with input and output impedances matched to radio frequency front end elements |
US11405017B2 (en) | 2020-10-05 | 2022-08-02 | Resonant Inc. | Acoustic matrix filters and radios using acoustic matrix filters |
US11658639B2 (en) | 2020-10-05 | 2023-05-23 | Murata Manufacturing Co., Ltd. | Transversely-excited film bulk acoustic resonator matrix filters with noncontiguous passband |
US11476834B2 (en) | 2020-10-05 | 2022-10-18 | Resonant Inc. | Transversely-excited film bulk acoustic resonator matrix filters with switches in parallel with sub-filter shunt capacitors |
US11955942B2 (en) | 2021-02-27 | 2024-04-09 | Anlotek Limited | Active multi-pole filter |
US11626893B2 (en) | 2021-03-26 | 2023-04-11 | Harris Global Communications, Inc. | Agile harmonic filtering |
DE212022000032U1 (de) * | 2021-06-25 | 2022-09-27 | Southern University Of Science And Technology | Automatisches Entwurfsvorrichtung für eine analoge Schaltung basierend auf einer Baumstruktur |
Family Cites Families (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3525954A (en) * | 1968-07-29 | 1970-08-25 | Microwave Dev Lab Inc | Stepped digital filter |
US5144268A (en) | 1987-12-14 | 1992-09-01 | Motorola, Inc. | Bandpass filter utilizing capacitively coupled stepped impedance resonators |
FR2688955B1 (fr) * | 1992-03-17 | 1996-11-15 | Thomson Csf | Filtre accordable haute frequence. |
US5392011A (en) * | 1992-11-20 | 1995-02-21 | Motorola, Inc. | Tunable filter having capacitively coupled tuning elements |
US5410284A (en) * | 1992-12-09 | 1995-04-25 | Allen Telecom Group, Inc. | Folded multiple bandpass filter with various couplings |
JPH06244756A (ja) * | 1993-02-18 | 1994-09-02 | Mitsubishi Electric Corp | アンテナインピーダンス整合装置 |
US5375146A (en) | 1993-05-06 | 1994-12-20 | Comsat Corporation | Digital frequency conversion and tuning scheme for microwave radio receivers and transmitters |
US5616539A (en) * | 1993-05-28 | 1997-04-01 | Superconductor Technologies, Inc. | High temperature superconductor lumped element band-reject filters |
US5737696A (en) * | 1993-07-06 | 1998-04-07 | Murata Manufacturing Co., Ltd. | Dielectric filter having inductive coupling windows between resonators and transceiver using the dielectric filter |
JP2899210B2 (ja) * | 1994-05-20 | 1999-06-02 | 国際電気株式会社 | 周波数帯域可変フィルタ |
US5543758A (en) * | 1994-10-07 | 1996-08-06 | Allen Telecom Group, Inc. | Asymmetric dual-band combine filter |
US5841330A (en) * | 1995-03-23 | 1998-11-24 | Bartley Machines & Manufacturing | Series coupled filters where the first filter is a dielectric resonator filter with cross-coupling |
FI98872C (fi) * | 1995-08-23 | 1997-08-25 | Lk Products Oy | Parannettu portaittain säädettävä suodatin |
KR100209714B1 (ko) | 1996-04-12 | 1999-07-15 | 구본준 | 반도체소자의 격리막 및 이의 형성방법 |
US5917387A (en) * | 1996-09-27 | 1999-06-29 | Lucent Technologies Inc. | Filter having tunable center frequency and/or tunable bandwidth |
JPH10209714A (ja) | 1996-11-19 | 1998-08-07 | Sharp Corp | 電圧制御通過帯域可変フィルタおよびそれを用いる高周波回路モジュール |
DE69723809T2 (de) * | 1996-12-27 | 2004-04-15 | Murata Mfg. Co., Ltd., Nagaokakyo | Filtervorrichtung |
JPH10215102A (ja) * | 1997-01-30 | 1998-08-11 | Nec Corp | マイクロストリップ帯域阻止フィルタ |
DE69738934D1 (de) * | 1997-02-12 | 2008-10-02 | Oki Electric Ind Co Ltd | Akustische Oberflächenwellenfilter mit durch Impedanzschaltungen erzeugten Dämpfungspolen |
JP3466079B2 (ja) * | 1997-03-12 | 2003-11-10 | 松下電器産業株式会社 | アンテナ共用器 |
US5910756A (en) * | 1997-05-21 | 1999-06-08 | Nokia Mobile Phones Limited | Filters and duplexers utilizing thin film stacked crystal filter structures and thin film bulk acoustic wave resonators |
BR9908822A (pt) | 1998-03-18 | 2000-11-21 | Conductus Inc | Aparelho e método para filtro de rejeição de faixa de faixa estreita |
JP2002508615A (ja) * | 1998-03-23 | 2002-03-19 | エプコス アクチエンゲゼルシャフト | 弾性表面波フィルタ |
US6107898A (en) * | 1998-04-30 | 2000-08-22 | The United State Of America As Represented By The Secretary Of The Navy | Microwave channelized bandpass filter having two channels |
US6232853B1 (en) * | 1999-03-12 | 2001-05-15 | Com Dev Limited | Waveguide filter having asymmetrically corrugated resonators |
US6347237B1 (en) * | 1999-03-16 | 2002-02-12 | Superconductor Technologies, Inc. | High temperature superconductor tunable filter |
JP3929197B2 (ja) * | 1999-03-17 | 2007-06-13 | 松下電器産業株式会社 | 高周波回路素子 |
US6317013B1 (en) * | 1999-08-16 | 2001-11-13 | K & L Microwave Incorporated | Delay line filter |
DE19941311C1 (de) | 1999-08-31 | 2001-06-07 | Cryoelectra Ges Fuer Kryoelek | Bandfilter |
JP3482958B2 (ja) * | 2000-02-16 | 2004-01-06 | 株式会社村田製作所 | 高周波回路装置および通信装置 |
JP4442052B2 (ja) | 2001-05-11 | 2010-03-31 | パナソニック株式会社 | 適応型高周波フィルタおよび適応型高周波アンテナ共用器およびそれらを用いた無線装置 |
JP3633476B2 (ja) * | 2000-04-19 | 2005-03-30 | 株式会社村田製作所 | フィルタ、アンテナ共用器および通信機装置 |
US6662026B1 (en) * | 2000-09-28 | 2003-12-09 | International Business Machines Corporation | Apparatus and method for detecting and handling accidental dialing on a mobile communications device |
JP3759693B2 (ja) * | 2000-12-11 | 2006-03-29 | シャープ株式会社 | ノイズフィルタおよびそれを用いた高周波送信機 |
US6686817B2 (en) | 2000-12-12 | 2004-02-03 | Paratek Microwave, Inc. | Electronic tunable filters with dielectric varactors |
US6686811B2 (en) * | 2001-03-26 | 2004-02-03 | Superconductor Technologies, Inc. | Filter network combining non-superconducting and superconducting filters |
WO2002087082A1 (en) * | 2001-04-11 | 2002-10-31 | Kyocera Wireless Corporation | Tunable matching circuit |
US6690251B2 (en) | 2001-04-11 | 2004-02-10 | Kyocera Wireless Corporation | Tunable ferro-electric filter |
DE10123369A1 (de) * | 2001-05-14 | 2002-12-05 | Infineon Technologies Ag | Filteranordnung für, symmetrische und unsymmetrische Leitungssysteme |
US6633208B2 (en) * | 2001-06-19 | 2003-10-14 | Superconductor Technologies, Inc. | Filter with improved intermodulation distortion characteristics and methods of making the improved filter |
US6791430B2 (en) * | 2001-12-31 | 2004-09-14 | Conductus, Inc. | Resonator tuning assembly and method |
US7071797B2 (en) * | 2002-02-19 | 2006-07-04 | Conductus, Inc. | Method and apparatus for minimizing intermodulation with an asymmetric resonator |
US6674346B2 (en) * | 2002-04-09 | 2004-01-06 | New Jersey Institute Of Technology | Evanescent resonators |
US20030222732A1 (en) * | 2002-05-29 | 2003-12-04 | Superconductor Technologies, Inc. | Narrow-band filters with zig-zag hairpin resonator |
CN1495963A (zh) * | 2002-08-30 | 2004-05-12 | ���µ�����ҵ��ʽ���� | 滤波器、高频模块、通信设备以及滤波方法 |
US6882246B2 (en) * | 2003-01-02 | 2005-04-19 | Harris Corporation | System and method for an electronically tunable frequency filter having constant bandwidth and temperature compensation for center frequency, bandwidth and insertion loss |
US7012483B2 (en) | 2003-04-21 | 2006-03-14 | Agile Materials And Technologies, Inc. | Tunable bridge circuit |
DE10320620B3 (de) * | 2003-05-08 | 2004-11-04 | Kathrein-Werke Kg | Hochfrequenzweiche |
JP4172784B2 (ja) * | 2003-09-29 | 2008-10-29 | 京セラ株式会社 | 電圧制御可変フィルタおよび通信装置 |
JP4053504B2 (ja) | 2004-01-30 | 2008-02-27 | 株式会社東芝 | チューナブルフィルタ |
US7330090B2 (en) * | 2004-03-26 | 2008-02-12 | The Regents Of The University Of California | Zeroeth-order resonator |
US7489215B2 (en) * | 2004-11-18 | 2009-02-10 | Kathrein-Werke Kg | High frequency filter |
CN101112007A (zh) * | 2004-11-30 | 2008-01-23 | 超导技术公司 | 调谐滤波器的***和方法 |
DE112005002968T5 (de) | 2004-11-30 | 2008-01-17 | Superconductor Technologies Inc., Santa Barbara | Systeme und Verfahren zur Abstimmung von Filtern |
WO2007001464A2 (en) | 2004-11-30 | 2007-01-04 | Superconductor Technologies, Inc. | Systems and methods for tuning filters |
KR101541189B1 (ko) * | 2005-11-18 | 2015-07-31 | 레저넌트 인크. | 저손실의 튜너블 무선 주파수 필터 |
EP1855348A1 (en) * | 2006-05-11 | 2007-11-14 | Seiko Epson Corporation | Split ring resonator bandpass filter, electronic device including said bandpass filter, and method of producing said bandpass filter |
US7825745B1 (en) * | 2006-09-12 | 2010-11-02 | Rf Magic Inc. | Variable bandwidth tunable silicon duplexer |
US7639101B2 (en) * | 2006-11-17 | 2009-12-29 | Superconductor Technologies, Inc. | Low-loss tunable radio frequency filter |
EP2168238A1 (en) | 2007-06-27 | 2010-03-31 | Superconductor Technologies, Inc. | Electrical filters with improved intermodulation distortion |
WO2012004818A1 (en) * | 2010-07-09 | 2012-01-12 | Politecnico Di Milano | Waveguide band-pass filter with pseudo-elliptic response |
EP2843834B1 (en) * | 2010-12-10 | 2016-10-26 | Peregrine Semiconductor Corporation | Tuning and control of an acoustic wave filter via a capacitor bank |
JP2012156881A (ja) * | 2011-01-27 | 2012-08-16 | Nippon Dempa Kogyo Co Ltd | フィルタ及び電子部品 |
-
2008
- 2008-06-27 US US12/163,814 patent/US7639101B2/en active Active
- 2008-06-27 JP JP2010515202A patent/JP5671717B2/ja not_active Expired - Fee Related
- 2008-06-27 EP EP08781133.7A patent/EP2168202B1/en active Active
- 2008-06-27 CN CN2008800221897A patent/CN101689692B/zh active Active
- 2008-06-27 KR KR1020157000026A patent/KR101651383B1/ko active IP Right Grant
- 2008-06-27 CN CN201310464878.6A patent/CN103546112B/zh active Active
- 2008-06-27 WO PCT/US2008/068677 patent/WO2009003190A1/en active Application Filing
- 2008-06-27 KR KR1020107001819A patent/KR101614955B1/ko active IP Right Grant
-
2009
- 2009-11-17 US US12/620,455 patent/US7863999B2/en active Active
-
2010
- 2010-12-02 US US12/959,237 patent/US8063714B2/en active Active
-
2011
- 2011-10-26 US US13/282,289 patent/US8797120B2/en active Active
-
2014
- 2014-03-14 US US14/214,249 patent/US8922294B2/en active Active
- 2014-11-27 JP JP2014239915A patent/JP6532221B2/ja active Active
- 2014-12-10 GB GB1421921.6A patent/GB2524133A/en not_active Withdrawn
- 2014-12-18 US US14/575,861 patent/US9135388B2/en not_active Expired - Fee Related
- 2014-12-23 DE DE102014119624.4A patent/DE102014119624B4/de active Active
- 2014-12-24 WO PCT/US2014/072391 patent/WO2015138040A1/en active Application Filing
- 2014-12-30 US US14/586,557 patent/US9129080B2/en not_active Expired - Fee Related
- 2014-12-31 CN CN201410854568.XA patent/CN104917479B/zh active Active
-
2015
- 2015-08-20 US US14/831,755 patent/US9647627B2/en active Active
- 2015-10-06 US US14/876,547 patent/US9647628B2/en active Active
-
2016
- 2016-12-01 US US15/367,039 patent/US9787283B2/en active Active
-
2017
- 2017-06-08 JP JP2017113123A patent/JP6546217B2/ja active Active
- 2017-09-01 US US15/694,653 patent/US10027310B2/en active Active
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6546217B2 (ja) | 低損失の可変無線周波数フィルタ | |
US7719382B2 (en) | Low-loss tunable radio frequency filter | |
JP6158780B2 (ja) | 低損失の可変無線周波数フィルタ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20170718 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20180323 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20180323 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180918 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20181218 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20190521 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190620 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6546217 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |