A 60 GHz passive repeater array with quasi-endfire radiation based on metal groove unit-cells

2016 ◽  
Vol 8 (3) ◽  
pp. 431-436 ◽  
Author(s):  
Duo Wang ◽  
Raphaël Gillard ◽  
Renaud Loison
Keyword(s):  
Low Cost ◽  
Normal Incidence ◽  
Main Beam ◽  
60 Ghz ◽  
Theoretical Investigations ◽  
Receiving Antenna ◽  
Unit Cells ◽  
Working Principle ◽  
Flat Profile ◽  
Transmitting Antenna

This paper describes a linear-polarized reflector that reflects incident wave almost parallel to its surface at 60 GHz, when illuminated by an impinging plane wave with normal incidence. This structure is designed as a simple and low-cost passive repeater with both a quasi-endfire radiation and a flat profile. Working as a transmission relay, it is a quite potential and possible solution to improve the radio-coverage in the T-shaped corridor, which is a typical scenario of non-light-of-sight (NLOS) environment for 60 GHz indoor communications. The proposed repeater consists of an array of parallel grooves with appropriate depths, drilled in a metallic plate. Full-wave simulations and theoretical investigations are carried out to demonstrate the working principle and to optimize the performance. Then, an 80-groove breadboard in the size of 200 mm × 200 mm is fabricated and measured to explore the feasibility of the concept. In a practical measurement, when the distance from the repeater to transmitting antenna (Tx) is 2 m, and to the receiving antenna (Rx) is 1.5 m, the repeater exhibits a main beam at ±75° with gain up to 22.7 dB. The communication between Tx and Rx in NLOS areas is thus successfully recovered.

scholarly journals On the application of the EM-imaging for chipless RFID tags

2015 ◽  
Vol 2 (2) ◽  
pp. 86-96 ◽  
Author(s):  
M. Zomorrodi ◽  
N.C. Karmakar
Keyword(s):  
Radio Frequency Identification ◽  
Low Cost ◽  
60 Ghz ◽  
Rfid Tag ◽  
High Data ◽  
Data Encoding ◽  
Bending Effect ◽  
Chipless Rfid ◽  
Frequency Identification ◽  
Cost Item

The electromagnetic (EM) imaging technique at mm-band 60 GHz is proposed for data encoding purpose in the chipless Radio Frequency Identification (RFID) systems. The fully printable chipless RFID tag comprises tiny conductive EM polarizers to create high cross-polar radar cross-section. Synthetic aperture radar approach is applied for formation of the tag's EM-image and revealing the tag's content. The achieved high data encoding capacity of 2 bits/cm2in this technique based on a fully printable tag is very convincing for many applications. The system immunity to multipath interference, bending effect, and printing inaccuracy suggests huge potentials for low-cost item tagging. Tags are also readable through a tick paper envelop; hence secure identification is provided by the proposed technique.

scholarly journals Low-Cost CMOS-Based Receive Modules for 60 GHz Wireless Communication

2009 ◽  
Author(s):  
Piet Wambacq ◽  
Kuba Raczkowski ◽  
Valery Ramon ◽  
Alexander Vasylchenko ◽  
Amin Enayati ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Low Cost ◽  
60 Ghz

Low-cost organic-substrate module for Tx-Rx short-range WiGig Communications at 60 GHz

2021 ◽  
pp. 1-1
Author(s):  
Aimeric Bisognin ◽  
Ana Arboleya ◽  
Diane Titz ◽  
Romain Pilard ◽  
Daniel Gloria ◽  
...  
Keyword(s):  
Short Range ◽  
Low Cost ◽  
Organic Substrate ◽  
60 Ghz

Overview on the Liquid Metal Battery for Grid-Level Large-Scale Energy Storage

2016 ◽  
Vol 723 ◽  
pp. 572-578
Author(s):  
Li Fu ◽  
Qi Chi Le ◽  
Xi Bo Wang ◽  
Xuan Liu ◽  
Wei Tao Jia
Keyword(s):  
Energy Storage ◽  
Liquid Metal ◽  
Large Scale ◽  
Low Cost ◽  
Advantages And Disadvantages ◽  
Comprehensive Comparison ◽  
Development And Utilization ◽  
Working Principle ◽  
Liquid Metal Battery ◽  
Grid Level

In recent years, the development and utilization of renewable generation have attracted more and more attention, and the grid puts forward higher requirements to the energy storage technology, especially for security, stability and reliability. The liquid metal battery (LMB) consists of two liquid metal electrodes and a molten salt electrolyte, which will be segregated into three liquid layers naturally. Being low-cost and long-life, it is regarded as the best choice for grid-level large-scale energy storage. This paper describes the main structure and working principle of the LMB, analyzes the advantages and disadvantages of the LMB when compared with the traditional batteries, and explores the feasibility and economy when it is used as a kind of large-scale energy storage applied in the power grid. The paper also makes a comprehensive comparison on the performance of several LMBs, and points out the LMB’s research and development in the future.

LOW COST 60 GHZ NEW THIN PYRALUX MEMBRANE ANTENNAS FED BY SUBSTRATE INTEGRATED WAVEGUIDE

2012 ◽  
Vol 42 ◽  
pp. 207-224 ◽  
Author(s):  
Tristan Sarrazin ◽  
Hamsakutty Vettikalladi ◽  
Olivier Lafond ◽  
Mohamed Himdi ◽  
Nathalie Rolland
Keyword(s):  
Low Cost ◽  
Substrate Integrated Waveguide ◽  
60 Ghz

Towards Parallel Cable-Driven Pantographs

2011 ◽  
Author(s):  
Simon Perreault ◽  
Philippe Cardou ◽  
Cle´ment Gosselin
Keyword(s):  
Low Cost ◽  
Output Link ◽  
Static Balancing ◽  
New Class ◽  
Nonlinear Springs ◽  
Preliminary Validation ◽  
Important Challenge ◽  
History Of ◽  
Working Principle ◽  
Two Degree Of Freedom

We propose a new class of pantographs, i.e., of mechanisms that allow the reproduction of the displacements of an input link, the master, with an output link, the slave. The application we envision for these devices is the telemanipulation of objects from small distances, at low cost, where magnetic fields or other design constraints prohibit the use of electromechanical systems. Despite the long history of pantographs, which were invented in the 17th century, the class of pantographs proposed here is new, as it relies on parallel cable-driven mechanisms to transmit the motion. This allows the reproduction of rigid-body displacements, while previous pantographs were limited to point displacements. This important characteristic and others are described in the paper. One important challenge in the design of the proposed systems is that the cables must remain taut at all time. We address this issue by introducing nonlinear springs that passively maintain a minimum tension in the cables, while approximating static balancing of the mechanism over its workspace. Approximating static balancing allows the forces applied at the slave to reflect more accurately at the master, and vice versa. As a preliminary validation, a two-degree-of-freedom parallel cable-driven pantograph is designed. A prototype of this apparatus that does not include approximate static balancing is built, which demonstrates the working principle of these mechanisms.

scholarly journals Accurate and Efficient Representation of Obstacles Using Radar Visualizer

2021 ◽  
Vol 9 (VI) ◽  
pp. 4429-4431
Author(s):  
K. Akanksha
Keyword(s):  
Detection System ◽  
Target Position ◽  
Radar System ◽  
Motor Vehicles ◽  
Radio Waves ◽  
Receiving Antenna ◽  
Efficient Representation ◽  
Transmitting Antenna ◽  
Analyze Data

Radar is a detection system that uses radio waves to determine the range, angle or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consist of a transmitting antenna, a receiving antenna (often same antenna is used for transmitting and receiving) and a receiver and process to determine properties of the objects. In our project we are detecting the target position of the obstacles that come in our way be it in military, aircrafts, ships, clouds, etc. using MATLAB. Using MATLAB, you can: analyze data, develop algorithms, create models and applications. The language, apps, and build in math functions enable you to quickly explore multiple approaches to arrive at a solution. Using MATLAB and Simulink we are doing radar visualizer.

scholarly journals Advanced Strategies to Improve Performances of Molybdenum-Based Gas Sensors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Angga Hermawan ◽  
Ni Luh Wulan Septiani ◽  
Ardiansyah Taufik ◽  
Brian Yuliarto ◽  
Suyatman ◽  
...  
Keyword(s):  
High Performance ◽  
Gas Sensing ◽  
Low Cost ◽  
Molybdenum Oxides ◽  
Exhaled Breath ◽  
Sensor Applications ◽  
Theoretical Investigations ◽  
Gas Sensing Properties ◽  
Future Challenges ◽  
Made In

AbstractMolybdenum-based materials have been intensively investigated for high-performance gas sensor applications. Particularly, molybdenum oxides and dichalcogenides nanostructures have been widely examined due to their tunable structural and physicochemical properties that meet sensor requirements. These materials have good durability, are naturally abundant, low cost, and have facile preparation, allowing scalable fabrication to fulfill the growing demand of susceptible sensor devices. Significant advances have been made in recent decades to design and fabricate various molybdenum oxides- and dichalcogenides-based sensing materials, though it is still challenging to achieve high performances. Therefore, many experimental and theoretical investigations have been devoted to exploring suitable approaches which can significantly enhance their gas sensing properties. This review comprehensively examines recent advanced strategies to improve the nanostructured molybdenum-based material performance for detecting harmful pollutants, dangerous gases, or even exhaled breath monitoring. The summary and future challenges to advance their gas sensing performances will also be presented.

scholarly journals Quantum Dot-sensitized Solar Cells: A Review

2018 ◽  
Vol 7 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Pooja Bhambhani
Keyword(s):  
Solar Cell ◽  
Quantum Dot ◽  
Counter Electrode ◽  
Low Cost ◽  
Power Conversion ◽  
Counter Electrodes ◽  
Analogous Structure ◽  
Recent Developments ◽  
Working Principle ◽  
Sensitized Solar Cells

Quantum dot-sensitized solar cell (QDSSC) has an analogous structure and working principle to the dye sensitizer solar cell (DSSC). It has drawn great attention due to its unique features, like multiple exciton generation (MEG), simple fabrication and low cost. The power conversion efficiency (PCE) of QDSSC is lower than that of DSSC. To increase the PCE of QDSSC, it is required to develop new types of working electrodes, sensitizers, counter electrodes and electrolytes. This review highlights recent developments in QDSSCs and their key components, including the photoanode, sensitizer, electrolyte and counter electrode.

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