Two-step Structural Design of Mesh Antennas for High Beam Pointing Accuracy

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Design and Performance of the Monopulse Pointing System of the DSN 34-Meter Beam-Waveguide Antennas

This article describes the design, analysis, and performance prediction of a monopulse pointing system in a 34-m beam-waveguide antenna of the Deep Space Network (DSN). While the basic concept of monopulse pointing is not new, its application in the DSN is novel in two ways: first, the large antenna structure made necessary by the extremely weak signal environment; and second, the use of the si...

متن کامل

Effects of beam pointing instability on two-beam interferometric lithography

In a photolithographic system, the mask patterns are imaged through a set of lenses on a resist-coated wafer. The image of mask patterns physically can be viewed as the interference of the plane waves of the diffraction spectrum captured by the lens set incident on the wafer plane at a spectrum of angles. Two-beam interference fringe is the simplest format of the image. Consequently, two-beam i...

متن کامل

Two design methods for Radial Line Slot Antennas with arbitrary or beam pattern

Two design procedures for Radial Line Slot Antennas (RLSAs) with circular polarization and either maximum gain or an arbitrary shaped pattern are proposed. Firstly, a method to design a RLSA with any desired pattern is presented. It is based on an optimization algorithm and some measures to ensure its fast convergence and stability need to be taken. Secondly, a fast technique to calculate the l...

متن کامل

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Performance Evaluation of 2×2 Switched Beam Antennas with Null Locating for Wireless Mesh Networks

A concept of switched beam antennas consisting of 2×2 rectangular array spaced by λ/4 accompanied with a null locating has been proposed in the previous work. In this letter, the performance evaluations of its prototype are presented. The benefits of using proposed system have been clearly measured in term of signal quality, throughput and delays. Also, the impact of position shift which mesh r...

متن کامل

ذخیره 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: Chinese Journal of Mechanical Engineering

سال: 2017

ISSN: 1000-9345,2192-8258

DOI: 10.1007/s10033-017-0134-0