Results 111 to 120 of about 83,100 (210)

Study of the impact of the incremental optical encoder sensor on the dynamic performance of velocity servosystems

open access: yesThe Journal of Engineering, 2019
This study focuses on the impact of the dynamics of the incremental optical encoder, particularly, at low speed, when the phase margin of the closed-loop system is reduced.
Yeny Vazquez-Gutierrez   +2 more
doaj   +1 more source

A Strategy for Controlling the LHC Magnet Currents [PDF]

open access: yes, 1996
The LHC will require an unprecedented precision of a few ppm in the control of the current in the major magnetic circuits. As a result of the optimisation of the machine design, the machine will be powered in eight sectors with separate power converters.
Barnett, I   +4 more
core  

Linear transmitter design for MSAT terminals [PDF]

open access: yes, 1990
One of the factors that will undoubtedly influence the choice of modulation format for mobile satellites, is the availability of cheap, power-efficient, linear amplifiers for mobile terminal equipment operating in the 1.5-1.7 GHz band.
Bateman, Andrew   +3 more
core   +1 more source

Notes on analogue and digital amplitude modulation [PDF]

open access: yes, 2009
Notes on AM, DSBSC, QAM, BPSK, 4QAM, 8PSK ...
Maunder, Rob
core  

Beamforming Techniques for Large-N Aperture Arrays

open access: yes, 2010
Beamforming is central to the processing function of all phased arrays and becomes particularly challenging with a large number of antenna element (e.g. >100,000).
Adami, K Zarb   +4 more
core   +1 more source

Electronics and control technology [PDF]

open access: yes, 1997
Until recently, there was no requirement to learn electronics and control technology in the New Zealand school curriculum. Apart from isolated pockets of teaching based on the enthusiasm of individual teachers, there is very little direct learning of ...
Forret, Michael
core   +1 more source

Navigating the Terrain of Digital Transition: Ghana’s Journey of Developing a Digital Land Information System

open access: yesLand
This paper explores Ghana’s two-decade journey in developing a digital land information system (LIS), exemplified by Ghana Enterprise Land Information System (GELIS) and Enterprise Land Information System (ELIS).
Rosemond Owusu Ansah   +5 more
doaj   +1 more source

Digital RF multiplexing for a TVWS transceiver implementation [PDF]

open access: yes, 2012
Future devices operating in the TV white space (TVWS) spectrum will require to access different bands at different locations and times in order to avoid interference to incumbent users, requiring agility and sufficient spectral masks to satisfy ...
Crockett, Louise Helen   +5 more
core  

Analogue and digital linear modulation techniques for mobile satellite [PDF]

open access: yes
The choice of modulation format for a mobile satellite service is complex. The subjective performance is summarized of candidate schemes and voice coder technologies.
Bateman, A.   +2 more
core   +1 more source

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