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A Low-Power Wideband Polar Transmitter for 3G
A Low-Power Wideband Polar Transmitter for 3G

... stabilize the quiescent point of the filter’s input against PVT variations, and the size of the filter’s capacitance is also halved. The sampling capacitance is chosen as a compromise between settling time and thermal noise. The output differential-to-single-ended stage boosts impedance relative to ...
Paper #22 - WordPress.com
Paper #22 - WordPress.com

... transformers and inductors of switch mode power supplies. These are used in this application as if constructed properly they can provide low power loss at high frequencies. At high frequencies, the current will only conduct in the center of a solid conductor. By using strands it reduces this effect ...
AN-1973 Benefits and Challenges of High
AN-1973 Benefits and Challenges of High

... process whereby solder wells up through the thermal vias causing the device to float. This can occur in the reflow process during manufacturing. When using a heavier package like the eMSOP package, 12-mil vias can be used while avoiding solder wicking. The total copper area required can be determine ...
RC Filter and Basic Timer Functionality
RC Filter and Basic Timer Functionality

... One of the most common and useful peripheral devices in a microcontroller is the TimerCounter. A timer can be used to measure amount of time between two signal pulses. Alternatively, a counter can be used to simply count the number of pulses in a pulse stream. An example for the former case would be ...
jetrack lan - Lanopia GmbH
jetrack lan - Lanopia GmbH

... LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity(as defined by the standard in use). L ...
PIO-16_16T(PCI)H_e
PIO-16_16T(PCI)H_e

... open-collector outputs. You can use 16 input signals as interrupt inputs. In addition, the digital filter function to prevent wrong recognition of input signals is provided. Windows/Linux driver is bundled with this product. Possible to be used as a data recording device for LabVIEW, with dedicated ...
W. Rieutort-Louis, L. Huang, Y. Hu, J. Sanz-Robinson, T. Moy, Y. Afsar, J.C. Sturm, N. Verma, and S. Wagner, "Current Cain of Amorphous Silicon Thin-Film Transistors Above the Cutoff Frequency", Device Research Conference (DRC) (2014)
W. Rieutort-Louis, L. Huang, Y. Hu, J. Sanz-Robinson, T. Moy, Y. Afsar, J.C. Sturm, N. Verma, and S. Wagner, "Current Cain of Amorphous Silicon Thin-Film Transistors Above the Cutoff Frequency", Device Research Conference (DRC) (2014)

The Ernitec Series 250 is a range of units capable of transmitting
The Ernitec Series 250 is a range of units capable of transmitting

2744.Hardware Pace Det Summary
2744.Hardware Pace Det Summary

... • Using a window comparator, a pulse can be created once the output of the Differentiator Circuit shows a change outside the preset window. ...
2744.Hardware Pace Det Summary
2744.Hardware Pace Det Summary

... • Using a window comparator, a pulse can be created once the output of the Differentiator Circuit shows a change outside the preset window. ...
analogFE_Apr09 - Indico
analogFE_Apr09 - Indico

INSTRUMENTATION AND CONTROL TUTORIAL 3
INSTRUMENTATION AND CONTROL TUTORIAL 3

... Another form of signal conditioning is the SIGNAL FILTER. This is used with electric signals to remove unwanted parts of the signal. For example a signal may contain AC and DC signals. A simple capacitor would filter out the DC signal. The signal may contain AC signals of different frequencies. A mo ...
Capacitive oscillator
Capacitive oscillator

... elongation effect is only used. Its advantage is clearly the low resistance with a very low Johnson noise [16]. However, the gauge factor is only a function of the Poisson ratio and its value is reduced to some units. According to equation (24), the relative resistance variation is proportional to t ...
Amplitude and Angle Modulation
Amplitude and Angle Modulation

... Modulation is the process or result of the process by which a message is changed into information. Modulation plays vital role in the field of communication. Communication involves the transmission, reception and processing of information by electrical means. For the propagation of electric signals, ...
DESIGN OF GIGAHERTZ TUNING RANGE 5 GHz LC
DESIGN OF GIGAHERTZ TUNING RANGE 5 GHz LC

... Interest in design and implementation of advanced wireless communication systems is rapidly increasing. It can be seen from fast-growing coverage of high-speed mobile networks, such as UMTS, LTE, WiMAX. Also wireless networks, working at 5 GHz frequency (802.11n, 802.11ac), become common for home us ...
The Use of Optocouplers in Measuring Loudspeaker Cone
The Use of Optocouplers in Measuring Loudspeaker Cone

... however, sensor noise becomes an issue. To suppress the noise and ensure good temperature stability of the sensing unit, two photo-interrupters in a differential connection have been used, together with the accompanying electronic circuitry. The linearity of the sensor achieved by this design is ver ...
PITCH RECOGNITION
PITCH RECOGNITION

... relatively small. In fact, there can be cases where the fundamental frequency of a sound is not even present in the signal. It is worthwhile to note that the varying distribution of strengths of frequency components in a note is what determines its musical property called timbre. This is the propert ...
The Control Subsystem enables a human operator to maneuver the
The Control Subsystem enables a human operator to maneuver the

... display. If you are at 9.4V or less, consider stopping and recharging the transmitter batteries. If the voltage reaches 8.9V, you have about 10 minutes left before you hit low voltage, so you should stop if possible. The transmitter hits low voltage at 8.5V on the display. At this point, you will he ...
MT-081 TUTORIAL  RMS-to-DC Converters
MT-081 TUTORIAL RMS-to-DC Converters

... The first method, called the explicit method, is shown in Figure 1. The input signal is first squared by an analog multiplier. The average value is then taken by using an appropriate filter, and the square root is taken using an op amp with a second squarer in the feedback loop. This circuit has lim ...
LR Phono Preamps
LR Phono Preamps

... Phono preamps can be implemented several ways: – “Passive” preamps put the EQ section in series with the signal – “Active” preamps put the EQ in a feedback network around an amplifier – A combination of active and passive is also possible Passive In ...
Simulating Control System Operations
Simulating Control System Operations

... information between those two times is lost. Also, because digital signals have less accuracy than analogue signals, the sampled values may not even be expressed correctly. The effects of sampling on a signal have a number of names including "Sampling noise", "sampling error", or "converted signal d ...
Chapter 5: Diodes I. Theory
Chapter 5: Diodes I. Theory

... the input there is a forward path through the diode bridge. While two of the diodes are forward biased, the other two are reverse biased and effectively eliminated from the circuit. Both conduction paths cause current to flow in the same direction through the load resistor, accomplishing ...
LR Phono Preamps - Pete Millett`s DIY Audio pages
LR Phono Preamps - Pete Millett`s DIY Audio pages

... Phono preamps can be implemented several ways: – “Passive” preamps put the EQ section in series with the signal – “Active” preamps put the EQ in a feedback network around an amplifier – A combination of active and passive is also possible Passive In ...
A CURRENT-MODE LOGIC FREQUENCY DIVIDER
A CURRENT-MODE LOGIC FREQUENCY DIVIDER

... Figure 8 Input and output for the CML frequency divider at the tt corner ........ 13 ...
Abstract
Abstract

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Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
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