View PDF - University of Maine
... Philosophy at the University of Maine, I agree that the library shall make it freely available for inspection. I further agree that permission for “fair use” copying of this dissertation for scholarly purposes may be granted by the Librarian. It is understood that any copying or publication of this ...
... Philosophy at the University of Maine, I agree that the library shall make it freely available for inspection. I further agree that permission for “fair use” copying of this dissertation for scholarly purposes may be granted by the Librarian. It is understood that any copying or publication of this ...
Large Dynamic Range Dynamically Biased Log-Domain
... This dissertation investigates the enhancement of the dynamic range per unit power consumption of analog filters using dynamic biasing. A technique for realizing dynamically biased log-domain filters while maintaining input-output linearity is presented. This method is much simpler than previously k ...
... This dissertation investigates the enhancement of the dynamic range per unit power consumption of analog filters using dynamic biasing. A technique for realizing dynamically biased log-domain filters while maintaining input-output linearity is presented. This method is much simpler than previously k ...
SGA Strain Gauge Load Cell Amplifier / Signal Conditioner Manual
... The on-board low pass filter can be switched in and adjusted (from 1Hz to 5kHz) using a series of DIP switches. A wide range of proportional output options for currents and voltages can be configured by DIP switch settings. Both the AC and DC versions are based on a common board and are mounted in a ...
... The on-board low pass filter can be switched in and adjusted (from 1Hz to 5kHz) using a series of DIP switches. A wide range of proportional output options for currents and voltages can be configured by DIP switch settings. Both the AC and DC versions are based on a common board and are mounted in a ...
A SiGe BiCMOS LNA FOR mm-WAVE APPLICATIONS
... lines at mm-wave frequencies implemented for the 130 nm SiGe BiCMOS technology node. In literature, specific S-CPW transmission line geometry parameters have previously been investigated, but this work optimises the signal-to-ground spacing of the S-CPW transmission lines without changing the charac ...
... lines at mm-wave frequencies implemented for the 130 nm SiGe BiCMOS technology node. In literature, specific S-CPW transmission line geometry parameters have previously been investigated, but this work optimises the signal-to-ground spacing of the S-CPW transmission lines without changing the charac ...
UM SUC 84154 016 Rev 25 Thoracic Suction Pump.pub
... Warning Symbols Legend The warning symbols marked on the equipment and their meanings are shown as follows. ...
... Warning Symbols Legend The warning symbols marked on the equipment and their meanings are shown as follows. ...
The Performance of Passive Lumped
... section of a mobile handset. Most of the parts, such as a switching module, power amplifier module, low noise amplifier, mixer, and filters are merged into one package with the exception of the lumped elements. Lumped elements none the less are still widely used in biasing and matching networks beca ...
... section of a mobile handset. Most of the parts, such as a switching module, power amplifier module, low noise amplifier, mixer, and filters are merged into one package with the exception of the lumped elements. Lumped elements none the less are still widely used in biasing and matching networks beca ...
LTC5586 - 6GHz High Linearity I/Q
... to optimize OIP2 to 80dBm, and achieve image rejection better than 60dB. The DC offset control function allows nulling of the DC offset at the A/D converter input, thereby optimizing the dynamic range of true zero-IF receivers that use DC coupled IF signal paths. The wide-band RF and LO input ports ...
... to optimize OIP2 to 80dBm, and achieve image rejection better than 60dB. The DC offset control function allows nulling of the DC offset at the A/D converter input, thereby optimizing the dynamic range of true zero-IF receivers that use DC coupled IF signal paths. The wide-band RF and LO input ports ...
the restoration - Waverley Amateur Radio Society
... to the vintage radio community. If you have paid money for a copy of it, then someone has taken your money without the permission of the writer or the operator of the hosting server. The publicly available master copy of this book and its pictures are held only on Simon Buxton’s website www.vk2bv.or ...
... to the vintage radio community. If you have paid money for a copy of it, then someone has taken your money without the permission of the writer or the operator of the hosting server. The publicly available master copy of this book and its pictures are held only on Simon Buxton’s website www.vk2bv.or ...
The Impact of Mains Impedance on Power Quality
... transient impulses, and harmonic voltages. These problems can be created by the critical load, or by other loads powered from the same electrical source. This paper presents the concept of mains impedance. It starts with a simple impedance model (resistive) and the resultant effect on AC voltage at ...
... transient impulses, and harmonic voltages. These problems can be created by the critical load, or by other loads powered from the same electrical source. This paper presents the concept of mains impedance. It starts with a simple impedance model (resistive) and the resultant effect on AC voltage at ...
The Restoration of Valved High Frequency Communications
... radios started to rise appreciably. But even in 2011, there is no shortage of collectable and restorable old radios newly emerging from old storerooms and garages all over the UK, some of them having been in there for decades. There seem to be many young people keen to learn the skill of working on ...
... radios started to rise appreciably. But even in 2011, there is no shortage of collectable and restorable old radios newly emerging from old storerooms and garages all over the UK, some of them having been in there for decades. There seem to be many young people keen to learn the skill of working on ...
A MULTI-DIMENSIONAL SPREAD SPECTRUM TRANSCEIVER Saurabh Sinha Philosophiae Doctor (Electronic Engineering)
... The integration is first considered more ideally, using mathematical sub-systems, and then later implemented practically using complementary metal-oxide semiconductor (CMOS) technology. The integration involves mixed-signal and radio frequency (RF) design techniques – and final integration involves ...
... The integration is first considered more ideally, using mathematical sub-systems, and then later implemented practically using complementary metal-oxide semiconductor (CMOS) technology. The integration involves mixed-signal and radio frequency (RF) design techniques – and final integration involves ...
Inductors, Electromagnetic compatibility (EMC), General
... innovations compared to the version in force since 1996. It has since been incorporated at national level by the EU member states in the form of various EMC laws and regulations. The most important changes include: ...
... innovations compared to the version in force since 1996. It has since been incorporated at national level by the EU member states in the form of various EMC laws and regulations. The most important changes include: ...
122 uses ultrasound.p65
... The heat generated in tissue can help alleviate muscle aches. For medical imaging, much lower intensity ultrasound radiation is used. There are several advantages for using ultrasound in medical diagnoses. During pregnancy, the foetus is very sensitive to ionising radiation like x-rays and the risk ...
... The heat generated in tissue can help alleviate muscle aches. For medical imaging, much lower intensity ultrasound radiation is used. There are several advantages for using ultrasound in medical diagnoses. During pregnancy, the foetus is very sensitive to ionising radiation like x-rays and the risk ...
Long-travel Piezomotors: Rebooting the Topic
... At the heart of piezoelectric flexure actuators is an exquisite stack of layers of specialized ceramic, only a few dozen microns thick, interleaved with electrodes and sintered into a solid structure. The most common piezo ceramic for high-performance positioning applications is PZT (lead-zirconate- ...
... At the heart of piezoelectric flexure actuators is an exquisite stack of layers of specialized ceramic, only a few dozen microns thick, interleaved with electrodes and sintered into a solid structure. The most common piezo ceramic for high-performance positioning applications is PZT (lead-zirconate- ...
Y L A 6/ 3
... An investigation of frequency-compressive feedback FM systems has been made, with emphasis placed on threshold behavior. In Part A, following a survey of the existing noise analysis of FM systems, use is made of a recent evaluation of the impulsive noise component which is due to Rice. It is shown t ...
... An investigation of frequency-compressive feedback FM systems has been made, with emphasis placed on threshold behavior. In Part A, following a survey of the existing noise analysis of FM systems, use is made of a recent evaluation of the impulsive noise component which is due to Rice. It is shown t ...
Effect of Strip Thickness - Electrical and Computer Engineering
... Multilayered dielectric microstrip lines are becoming an integral part of GaAs Several applications of such structures include circuit passivation or scratch protection, highspeed digital circuit crossover interconnects. MMIC crossover interconnects, metalinsulator-metal capacitors, high directivity ...
... Multilayered dielectric microstrip lines are becoming an integral part of GaAs Several applications of such structures include circuit passivation or scratch protection, highspeed digital circuit crossover interconnects. MMIC crossover interconnects, metalinsulator-metal capacitors, high directivity ...
Mechanical filter
A mechanical filter is a signal processing filter usually used in place of an electronic filter at radio frequencies. Its purpose is the same as that of a normal electronic filter: to pass a range of signal frequencies, but to block others. The filter acts on mechanical vibrations which are the analogue of the electrical signal. At the input and output of the filter, transducers convert the electrical signal into, and then back from, these mechanical vibrations.The components of a mechanical filter are all directly analogous to the various elements found in electrical circuits. The mechanical elements obey mathematical functions which are identical to their corresponding electrical elements. This makes it possible to apply electrical network analysis and filter design methods to mechanical filters. Electrical theory has developed a large library of mathematical forms that produce useful filter frequency responses and the mechanical filter designer is able to make direct use of these. It is only necessary to set the mechanical components to appropriate values to produce a filter with an identical response to the electrical counterpart.Steel and nickel–iron alloys are common materials for mechanical filter components; nickel is sometimes used for the input and output couplings. Resonators in the filter made from these materials need to be machined to precisely adjust their resonance frequency before final assembly.While the meaning of mechanical filter in this article is one that is used in an electromechanical role, it is possible to use a mechanical design to filter mechanical vibrations or sound waves (which are also essentially mechanical) directly. For example, filtering of audio frequency response in the design of loudspeaker cabinets can be achieved with mechanical components. In the electrical application, in addition to mechanical components which correspond to their electrical counterparts, transducers are needed to convert between the mechanical and electrical domains. A representative selection of the wide variety of component forms and topologies for mechanical filters are presented in this article.The theory of mechanical filters was first applied to improving the mechanical parts of phonographs in the 1920s. By the 1950s mechanical filters were being manufactured as self-contained components for applications in radio transmitters and high-end receivers. The high ""quality factor"", Q, that mechanical resonators can attain, far higher than that of an all-electrical LC circuit, made possible the construction of mechanical filters with excellent selectivity. Good selectivity, being important in radio receivers, made such filters highly attractive. Contemporary researchers are working on microelectromechanical filters, the mechanical devices corresponding to electronic integrated circuits.