A NARROW BEAM, BEAM STEERABLE AND LOW SIDE-LOBE REFLECTARRAY BASED ON MACRO ELECTRO-MECHANICAL TECHNIQUE
نویسندگان
چکیده
منابع مشابه
Thermo-Electro Mechanical Impedance based Structural Health Monitoring: Euler- Bernoulli Beam Modeling
In recent years, impedance measurement method by piezoelectric (PZT) wafer activesensor (PWAS) has been widely adopted for non-destructive evaluation (NDE). In this method, theelectrical impedance of a bonded PWAS is used to detect a structural defect. The electro-mechanicalcoupling of PZT materials constructs the original principle of this method. Accordingly, the electricalimpedance of PWAS c...
متن کاملDesign of Broad-Beam Microstrip Reflectarray
The reflectarray’s elements arrangement for generating an arbitrary phase distribution in the antenna aperture and thus a wide beamwidth of the far field pattern is presented. The desired phase delay of reflectarray elements, which duplicated the same radiating aperture as backscatters, is determined on the construction of the curvature of a shaped backscatter surface with the help of Snell's l...
متن کاملMechanical alignment based on Beam Diagnostics
The policy at ESRF is to perform periodic realignments to keep reasonably good geometry of the machine. All corrections on the beam are performed with magnetic correctors. However, we explored different ways to introduce a mechanical correction before using the magnetic correctors. Expected consequences may be: ! A reduction of the strength of correctors (not crucial since we are far from their...
متن کاملSide Lobe Suppression of Concentric Circular Arrays Using Non Conventional Beam Forming Technique
Circular antenna array design is one of the most important electromagnetic optimization problems of current interest. The antenna must generate a pencil beam pattern in the vertical plane along with minimized side lobe level. In this paper we present non conventional method based on improved parameter of hyper beam exponent x. The circular array when implemented using hyper beam technique, ther...
متن کاملNarrow-beam tube
1. PURPOSE AND DESCRIPTION The narrow beam tube 06950.00 is used in conjunction with the pair of Helmholtz coils 06960.00 to study the behaviour of an electron beam in a magnetic field normal to the electron trajectory, which is made visible by the fluorescence of the insert gas with which the tube is filled. The tube has an axial scale shaped like a ladder, whose metal 'rungs' are given a coat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress In Electromagnetics Research C
سال: 2020
ISSN: 1937-8718
DOI: 10.2528/pierc19120104