Results 31 to 40 of about 17,964 (305)
Stand for measuring the directional characteristics of antennas of satellite communication systems
Космические аппараты и технологии, 2020 The development of network based on satellite communication systems is a promising solution for providing telecommunications services in the Arctic.
A. B. Gladyshev +4 more
doaj +1 more source
Improved detection scheme for chipless RFIDs using prolate spheroidal wave function-based noise filtering [PDF]
, 2011 A novel, highly sensitive scheme to detect the resonance peaks in the spectrum of chipless RFID signals is presented. The detection is based on finding the zeros in the derivative of the group delay of the received signal.
Dullaert, Wouter +2 more
core +2 more sources
A Novel Square-Spiral Strip Antenna [PDF]
2007 2nd International ITG Conference on Antennas, 2007 A square-spiral strip antenna is designed considering the procedure used to obtain log-periodic antennas. Simulation results of the new design are compared with those of the well known and widely used Archimedean spiral antenna in terms of the frequency dependency. The effect of dielectric substrate used to support the antennas is also investigated.
Saynak, Uğur, Kuştepeli, Alp
openaire +2 more sources
POSSIBILITIES OF INCREASING THE ENERGY OF RADIO LINES FOR CONTROLLING DRONES
Information and Telecommunication SciencesBackground. The creation of an antenna system consisting of two spiral structures for the 2,4 GHz and 5,8 GHz frequency bands is caused by practical needs determined by the results of using drones to monitor the environment.
Олег Бердников +3 more
doaj +1 more source
Novel Square Spiral Antennas for Broadband Applications [PDF]
Frequenz, 2009 An investigation of novel square spiral antennas is presented. The antennas are designed by considering the special arrangements of spiral arms. The new designs perform much better in terms of the frequency independency of the fundamental antenna parameters, when compared with the well known and widely used Archimedean spiral antenna, which makes the ...
Saynak, Ugur, Kustepeli, Alp
openaire +3 more sources
Electronic scanning of 2-channel monopulse patterns [PDF]
, 1970 Scanning method involves separation of scanning capability into two independent degrees of freedom. One degree of freedom corresponds to azimuthal scanning and other to elevation scanning on spiral coordinate axes.
Schmidt, R. F.
core +1 more source
Angle-resolved cathodoluminescence imaging polarimetry
, 2015 Cathodoluminescence spectroscopy (CL) allows characterizing light emission in bulk and nanostructured materials and is a key tool in fields ranging from materials science to nanophotonics.
Brenny, Benjamin +4 more
core +2 more sources
Towards Accurate Dielectric Property Retrieval of Biological Tissues for Blood Glucose Monitoring [PDF]
, 2014 (c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works for resale or ...
Foster, R, Hao, Y, Yilmaz, T
core +1 more source
FEBS Letters, EarlyView.Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman +2 more
wiley +1 more source
Experimental study of spiral antennas with various additional deceleration options
Физика волновых процессов и радиотехнические системыBackground. The work is aimed at the development and research of flat spiral antennas with additional slowdown. The use of slowdown structures allows to change the operating frequency range of antennas and the electrodynamic characteristics of antennas ...
Dmitrij P. Tabakov, Mikhail A. Malakhov
doaj +1 more source