A Half-Sized Post-Wall Short-Slot Directional Coupler with Hollow Rectangular Holes in a Dielectric Substrate(Passive Circuits, <Special Section>Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Pe
スポンサーリンク
概要
- 論文の詳細を見る
The authors realize a 50% length reduction of short-slot couplers in a post-wall dielectric substrate by two techniques. One is to introduce hollow rectangular holes near the side walls of the coupled region. The difference of phase constant between the TE_<10> and TE_<20> propagating modes increases and the required length to realize a desired dividing ratio is reduced. Another is to remove two reflection-suppressing posts in the coupled region. The length of the coupled region is determined to cancel the reflections at both ends of the coupled region. The total length of a 4-way Butler matrix can be reduced to 48% in comparison with the conventional one and the couplers still maintain good dividing characteristics; the dividing ratio of the hybrid is less than 0.1dB and the isolations of the couplers are more than 20dB.
- 社団法人電子情報通信学会の論文
- 2005-07-01
著者
-
ANDO Makoto
Department of Electrical and Electronic Engineering, Tokyo Institute of Technology
-
Ando Makoto
Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology
-
Hirokawa Jiro
Department Of Electrical & Electronic Engineering Faculty Of Engineering Tokyo Institute Of Tech
-
Yamamoto Shin‐ichi
Department Of Applied Chemistry National Defense Academy
-
Yamamoto Shinichi
Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology
-
Ando Makoto
Department Of Cardiovascular Surgery The Sakakibara Heart Institute
-
Ando Makoto
Department Of Cardiovascular Surgery Sakakibara Heart Institute
-
Ando Makoto
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
-
Yamamoto Shinichi
Department Of Anesthesiology School Of Medicine Keio University
関連論文
- A Post-Wall Center-Feed Waveguide Circuit Consisting of T-Junctions for Reducing the Slot-Free Area in a Parallel Plate Slot Array Antenna
- Effects of Weight Loss on Bone Mineral Density in Rats
- Design of a Partially-Corporate Feed Double-Layer Slotted Waveguide Array Antenna in 39GHz Band and Fabrication by Diffusion Bonding of Laminated Thin Metal Plates
- A Coaxial Line to Post-Wall Waveguide Transition for a Cost-Effective Transformer between a RF-Device and a Planar Slot-Array Antenna in 60-GHz Band(Antennas and Propagation)
- Single ventricle repair in children with Down's syndrome
- Arterial Switch Operation Using Aortic Homograft for Transposition of the Great Arteries with Pulmonary Regurgitation
- Mitral Valve Replacement in Children under 3 Years of Age
- Single-stage Repair of Complete Atrioventricular Septal Defect and Coarctation of the Aorta in Neonate
- End-to-side Anastomosis for Coarctation of the Aorta and Type A Aortic Arch Interruption with Hypoplastic Aortic Arch
- Ross Procedure in an Infant Weighing 4.5kg : Eight years Follow-up
- Mitral Valve Replacement for Children with a Small Annulus Using ATS Open Pivot Prosthesis
- -0857- CHARACTERISTICS OF THE INITIATING BEATS OF NONSUSTAINED VENTRICULAR TACHYCARDIAS : COMPARISON WITH ISOLATED VENTRICULAR PREMATURE CONTRACTIONS(PROCEEDINGS OF THE 59th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY)
- A Lightweight Radial Line Slot Antenna with Honeycomb Structure for Space Use
- Fabrication of Alternating-Phase Fed Single-Layer Slotted Waveguide Arrays Using Plastic Materials with Metal-Plating
- A Three-Way Divider for Partially-Corporate Feed in an Alternating Phase-Fed Single-Layer Slotted Waveguide Array(Antennas and Propagation)
- Analysis of a Waveguide with a Round-Ended Wide Straight Slot by the Method of Moments Using Numerical-Eigenmode Basis Functions(Antenna and Propagation)
- PJ-304 Short-term Vagal Nerve Stimulation protects myocardium from ischemia-reperfusion (I/R) injury(PJ051,Autonomic Nervous System (H),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)
- The Relationship between Maternity Blues and Thyroid Dysfunction
- The Relation between Body-Fat Distribution and Lipid Metabolism in Postmenopausal Women
- Guideline of Surgical Management Based on Diffusion of Descending Necrotizing Mediastinitis
- Design of Radial Line Slot Antennas at 8.3 GHz for Large Area Uniform Plasma Generation
- Continuous spinal anesthesia and postoperative analgesia for elective cesarean section in a parturient with Eisenmenger's syndrome
- Design of 1m^2 Order Plasma Excitation Single-Layer Slotted Waveguide Array with Conducting Baffles and Quartz Glass Strips Using the GSM-MoM Analysis(Antennas and Propagation)
- A Single-Layer Linear-to-Circular Polarization Converter for a Narrow-Wall Slotted Waveguide Array
- Autologous Tissue-Fragmented Extracardiac Conduit With Rapid,Stable Endothelialization due to Angiogenesis
- Near-Field Distribution of Radial Line Slot Antenna for Surface-Wave-Coupled Plasma Generation
- Production of Large-Diameter Uniform Plasma in mTorr Range Using Microwave Discharge
- B-1-57 Design of Sequentially Rotated Circularly Polarized 2x2 Patch Antenna Arrays for Monopulse Operation
- Pattern Analysis of a GPS Microstrip Antenna on a Rectangular Ground Plane by Using Modified Edge Representation
- Synthesis of thermoresponsive polysilsesquioxane with methoxyethylamide group and crown ether
- A New Amphiphilic and Thermoresponsive Polysilsesquioxane Having Alkoxyethylamide Group
- A Design of a Leaky Waveguide Crossed-Slot Linear Array with a Matching Element by the Method of Moments with Numerical-Eigenmode Basis Functions(Antennas and Propagation)
- Simple Analysis of a Slot and a Reflection-Canceling Post in a Rectangular Waveguide Using only the Axial Uniform Currents on the Post Surface(Antenna and Propagation)
- OE-183 A New Drug Delivery System Using Fibronectin-VEGF Fusion is More Effective and Harmless than VEGF Alone for the Therapeutic Neovascularization(Growth factor/Cytokine(01)(H),Oral Presentation(English),The 72nd Annual Scientific Meeting of the Japane
- Remarkable Salt Effects in the Highly Enhanced Enantioselective Hydrolysis of Amino Acid Esters with the Active Tripeptide in the Vesicular System
- Grating Lobes Suppression in Transverse Slot Linear Array with a Dual Parasitic Beam of Strip Dipoles(2004 International Symposium on Antennas and Propagation)
- A Waveguide Broad-Wall Transverse Slot Linear Array with Reflection-Canceling Inductive Posts and Grating-Lobe Suppressing Parasitic Dipoles(Antenna Design, Wireless Technologies and Computational Electromagnetics)
- Thermoresponsive polysilsesquioxane grafted methacrylate polymer with a methoxyethylamide group
- Synthesis of Grafted Polysilsesquioxane by Ring-Opening Polymerization of Lactide
- Preparation of Thermoresponsive Grafted Polysilsesquioxane from Polyacrylamides Having Methoxysilyl End Group
- Preparation of Stimuli-responsive Polysilsesquioxane Grafted Block Copolymer of Acrylamide Monomers
- Preparation of Amphiphilic Polysilsesquioxane by Grafting of Block Copolymer of Acrylamide Monomers
- Ring Opening Polymerization of Oxetane by Use of Silicate Gel of Rare Earth Metal
- Graft Polymerization of Dimethylacrylamide onto Polysilsesquioxane Containing Mercapto Groups
- Synthesis of Graft Copolymer from Polysilsesquioxane Initiated by Photoiniferter
- Mechanical Phase Shifting in the Power Divider for Single-Layer Slotted Waveguide Arrays(Antenna and Propagation)
- Development of Planar Antennas
- A Full-Wave Analysis of a Complete Model for a Radial Line Slot Antenna
- A Study of Aspect Ratio of the Aperture and the Effect on Antenna Efficiency in Oversized Rectangular Slotted Waveguide Arrays(Antenna and Propagation)
- A Post-Wall Center-Feed Waveguide Circuit Consisting of T-Junctions for Reducing the Slot-Free Area in a Parallel Plate Slot Array Antenna
- Design of Post-Wall Feed Waveguide for a Parallel Plate Slot Array by an Analysis Model with Corrected Solid-Walls
- Design of Narrow Wall Windows in a Waveguide to Feed Partially-Dielectric-Filled Oversized-Rectangular Waveguide Based on 2-Dimensional Analysis of Two Orthogonal Directions
- Analysis and Design of a Reflection-Cancelling Transverse Slot-Pair Array with Grating-Lobe Suppressing Baffles
- Analysis and Uniform Design of a Single-Layer Slotted Waveguide Array Antenna with Baffles
- Bandwidth Enhancement of Aperture Feed by an Air Rectangular Cavity Backing in a LTCC Post-Wall Waveguide
- Step Width Tolerable for Offset of the Aperture in a Millimeter-Wave Transducer between Post-Wall and Hollow Standard Waveguides
- B-1-154 Power Divider for Feed of Oversized Dielectric-Coated Rectangular Waveguide
- The Ridged Cross-Junction Multiple-Way Power Divider for Small Blockage and Symmetrical Slot Arrangement in the Center Feed Single-Layer Slotted Waveguide Array
- Analysis of Radial Line Slot Antenna with Dielectric Layers over the Aperture, Vol.J86-B,No.3, pp.511-518
- Unsuspected tracheal web inhibits endotracheal intubation : report of a case
- Reflection Characteristics of Center-Feed Single-Layer Waveguide Arrays(2004 International Symposium on Antennas and Propagation)
- A Cost-Effective Transition between a Microstrip Line and a Post-Wall Waveguide Using a Laminated LTCC Substrate in 60-GHz Band(Microwaves, Millimeter-Waves)
- Moment Method Analysis of a Plane Wave Generator in an Oversized Rectangular Waveguide(Antennas and Propagation)
- B-1-83 Partially-dielectric-filled Single Layer Feed-waveguide for Excitation of the Dominant Quasi TEM-wave in Oversized-rectangular Waveguide
- Feed through an Aperture to a Post-Wall Waveguide with Step Structure(Antennas and Propagation)
- A Transformer between a Thin Post-Wall Waveguide and a Standard Metal Waveguide via a Dielectric Substrate Insertion with Slits Etched on It(Antenna and Propagation)
- A Radial Line Slot Antenna Fed by a Rectangular Waveguide through a Crossed Slot(Antenna and Propagation)
- Bilateral pulmonary artery banding for hypoplastic left heart syndrome and related anomalies
- Ascitic Positive Cytology and Intraperitoneal Metastasis in Ovarian Dysgerminoma
- B-1-57 Radial Line Slot Antenna with an Elliptical Beam
- Cycloheximide Suppresses Radiation-induced Apoptosis in MOLT-4 Cell with Arg72 Variant of p53 through Translational Inhibition of p53 Accumulation
- Loss of Post-Wall Waveguides and Efficiency Estimation of Parallel-Plate Slot Arrays Fed by the Post-Wall Waveguide in the Millimeter-Wave Band
- Effect of Carvedilol on Heart Failure in Patients With a Functionally Univentricular Heart
- A Single-Layer Hollow-Waveguide 8-Way Butler Matrix(Microwaves, Millimeter-Waves)
- A Half-Sized Post-Wall Short-Slot Directional Coupler with Hollow Rectangular Holes in a Dielectric Substrate(Passive Circuits, Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Pe
- A Post-Wall Waveguide Slot Array with a Three-Way Power Divider on a Single-Layer Dielectric Substrate(Antennas and Propagation)
- A Beam Switching Slot Array with a 4-Way Butler Matrix Installed in Single Layer Post-Wall Waveguides (Antenna and Propagation)
- Full-Wave Design Considering Slot Admittance in 2-D Waveguide Slot Arrays with Perfect Input Matching
- Edge-to-edge tricuspid valve repair in hypoplastic left heart syndrome
- Uniform Physical Optics Diffraction Coefficients for Impedance Surfaces and Apertures
- Design of a Partially-Corporate Feed Double-Layer Slotted Waveguide Array Antenna in 39GHz Band and Fabrication by Diffusion Bonding of Laminated Thin Metal Plates
- Synthesis of grafted polysilsesquioxane by ring-opening polymerization of lactide and trimethylene carbonate
- An Alternating-Phase Fed Single-Layer Slotted Waveguide Array in 76 GHz Band and Its Sidelobe Suppression(Recent Devices, Circuits, and Systems for Millimeter-wave ITS Applications)
- Expressions of difference between scattering Geometrical Optics and indentation line integral around the pole of Modified Edge Representation (アンテナ・伝播)
- Surface to line integral reduction in Physical Optics
- Extrapulmonary hamartoma
- Effect of Sodium Dodecyl Sulfate on Coil-Globule Transitions of Poly(N-isopropyl acrylamide)
- B-1-152 Numerical Optimization for Flat Elliptical Beam Radial Line Slot Antenna
- Bandwidth of Electronically Steerable Parasitic Array Radiator Antennas in Single Beam Scanning(Antenna and Propagation)
- Large-Size Local-Domain Basis Functions with Phase Detour and Fresnel Zone Threshold for Sparse Reaction Matrix in the Method of Moments(EM Analysis, Wireless Technologies and Computational Electromagnetics)
- Radiation Pattern Analysis of Reflector Antennas : Discussions and Hybrid Use of Physical Optics and Aperture Field Integration Method(Recent Progress in Antennas and Propagation Researches : Selected Papers Translated from the IEICE Tran
- A High-Efficiency Circularly-Polarized Aperture Array Antenna with a Corporate-Feed Circuit in the 60GHz Band
- C-1-27 Surface to Line Integrals Reduction of Physical Optics by Using Currents in Modified Edge Representation with SGO Correction
- LTCC Partially-Filled Post-Wall Rectangular-Waveguide Slot Array Antenna in the Millimeter-Wave Band
- Planar Waveguide Arrays for Millimeter Wave Systems
- Comparison of total fields calculated by Physical Optics surface integration and line integration of Equivalent Edge Currents using Modified Edge Representation with SGO correction for reflection components
- Design and Measurement of the Plate Laminated Waveguide Slot Array Antenna and Its Feasibility for Wireless Link System in the 120GHz Band
- Double-Layer Plate-Laminated Waveguide Slot Array Antennas for a 39GHz Band Fixed Wireless Access System
- Manufacture and Performance of a 60GHz-Band High-Efficiency Antenna with a Thick Resin Layer and the Feed through a Hole in a Silicon Chip
- Circularly Polarized Post-wall Waveguide Slotted Arrays