Bandwidth of Electronically Steerable Parasitic Array Radiator Antennas in Single Beam Scanning(Antenna and Propagation)
スポンサーリンク
概要
- 論文の詳細を見る
ESPAR (Electronically Steerable Passive Array Radiator) antennas were proposed as candidates for low-cost analog adaptive beamforming. The radiation pattern is controlled in an azimuthal plane by variable reactors loaded on each passive element. This paper estimates the frequency bandwidth of an ESPAR antenna in a single beam scanning operation. Bandwidth in terms of gain is predicted statistically as functions of beam direction and dynamic range of variable reactance. The -3dB bandwidth of 7-element ESPAR antennas can be about 30%, 25% and 15% for the range of reactance of -100Ω≦X_n≦100Ω, -50Ω≦X_n≦50Ω and -100Ω≦X_n≦0Ω, respectively, while the improper choice of reactance sets results in narrow bandwidth less than 5%.
- 社団法人電子情報通信学会の論文
- 2003-09-01
著者
-
Ando Makoto
Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology
-
Akiyama Akira
Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology:(present Address)f
-
Ando Makoto
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
-
ITO Katsuhisa
Department of Electrical and Electronic Engineering, Tokyo Institute of Technology
-
Ito Katsuhisa
Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology
関連論文
- 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)
- Design of Radial Line Slot Antennas at 8.3 GHz for Large Area Uniform Plasma Generation
- 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
- 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
- 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
- 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)
- Mechanical Phase Shifting in the Power Divider for Single-Layer Slotted Waveguide Arrays(Antenna and Propagation)
- 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
- 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
- B-1-57 Radial Line Slot Antenna with an Elliptical Beam
- 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
- 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
- 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
- Near-Field Distribution of Radial Line Slot Antenna for Surface-Wave-Coupled Plasma Generation
- 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