نتایج جستجو برای: standing wave ratio

تعداد نتایج: 746865  

Journal: :Journal of Physics: Conference Series 2021

Abstract RF (Radio Frequency) connector has been extensively applied in the field of communication for it is a key device transmitting microwave signals. If he end designed improperly dimension, clearance will be observed after inserting, resulting an abnormal phenomenon voltage standing wave ratio (VSWR) connector. This paper studied influence inserting on through theoretical analysis and perf...

In this article, we present a new design of a coplanar waveguide fed (CPW-fed) ultra-wideband (UWB) antenna with dual band-notched characteristics. Two notched frequency bands are achieved by using two inverted U-shaped stepped impedance resonators. The proposed antenna can operate from 2.82 to 11 GHz (118%), defined by VSWR< 2, except two notched bands around 3.5 GHz (WiMAX) and 5.5 GHz (WLAN)...

2018
Xiaofei Yan Yajie Zhao Qiang Cheng Xiaoliang Zheng Yandong Zhao

Forest duff (fermentation and humus) water content is an important parameter for fire risk prediction and water resource management. However, accurate determination of forest duff water content is difficult due to its loose structure. This study evaluates the feasibility of a standing wave ratio (SWR) sensor to accurately determine the forest duff water content. The performance of this sensor w...

2018
Chi-Ken Lu Scott Cheng-Hsin Yang Patrick Shafto

We propose a Standing Wave Decomposition (SWD) approximation to Gaussian Process regression (GP). GP involves a costly matrix inversion operation, which limits applicability to large data analysis. For an input space that can be approximated by a grid and when correlations among data are short-ranged, the kernel matrix inversion can be replaced by analytic diagonalization using the SWD. We show...

Journal: :Frontiers in photonics 2022

Ray-wave geometric beam is an exotic kind of structured light with ray-wave duality and coupled diverse degrees freedom (DoFs), which has attracted intense attention due to its potential applications in theories applications. This work offers a new insight that the traditional beams can be seen as transverse standing-wave (SW) beams, decomposed into superposition traveling-wave (TW) beams. We c...

2015

INTRODUCTION The first ultrasonic motor was developed by V.V. TYPES OF ULTRASONIC MOTOR ULTRASONIC MOTOR STANDING TRAVELLING WAVE TYPE. Www.slideworld.com www.pdf-searchengine.com. X2022 The first ultrasonic motor was introduce by v.v lavrinko in 1965.x2022 An. Ultrasonic motor Standing Traveling wave wavebidirectional unidirectional 8. Rakesh R.standing wave piezoelectric linear ultrasonic mot...

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