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ADC
ADC

... 8 resisters. Now the voltages across each resistor are divided in such a way that a ladder of 1 volt is built with the help of 1K-Ohm resistances. Therefore the reference voltages across all the comparators are 1-7 volts. Now let us assume that an input voltage signal of 2.5 V is to be converted int ...
ISSCC 2017 Digest of Technical Papers
ISSCC 2017 Digest of Technical Papers

... Direct-RF synthesis has gained increasing attention in recent years [1] [2] as it simplifies the transmitter system by eliminating the intermediate frequency stage. It also offers the opportunity to address the extensive range of cellular bands with the same architecture and building blocks. Direct ...
End of Moore`s law: thermal (noise) death of
End of Moore`s law: thermal (noise) death of

Supplementary2
Supplementary2

... The transducer pair axial separation width Z is fixed at manufacture as a large error could be cause by the alteration of this separation distance as shown in Table S1 where a 5% deviation in separation can cause >10% error in flow measurement. A deviation in diameter or height of the duct of 5% onl ...
Deep-sub-1 V for nano-scale CMOS devices - SMDP-VLSI
Deep-sub-1 V for nano-scale CMOS devices - SMDP-VLSI

... Peak SNDR fIN=495kHz; Vin,diff=100mVRMS ...
Phy212_CH17_worksheet
Phy212_CH17_worksheet

... e. Would it be possible to observe an object of size 0.1 mm using this ultrasound wave frequency? If not, what would be the minimum frequency necessary to observe such an object? Ans. No, the wavelength of the ultrasound is 3.08x10-4m. In order to resolve an object, the wavelength must be smaller th ...
Vehicle Power Plant and Transmission Characteristics
Vehicle Power Plant and Transmission Characteristics

... increases. The magnitude of torque at a given slip also increases with increase in slip with the exception of unity slip (starting condition). fs=10Hz fs=30Hz fs=50Hz ...
Signal Injection in Sensorless PMSM Drives Equipped With Inverter
Signal Injection in Sensorless PMSM Drives Equipped With Inverter

operating instructions
operating instructions

High Current Low Voltage Solution For Microprocessor
High Current Low Voltage Solution For Microprocessor

... a microprocessor, ceramic capacitors would be used to keep the impedance at the microprocessor socket low beyond 1MHz, while the SAC would be used for everything below 1MHz. This eliminates the need for bulk capacitors at the point of load, since the Aluminum Polymer capacitors typically have 5 time ...
MATHSCLASSICmanual.
MATHSCLASSICmanual.

RS232 Fundamentals
RS232 Fundamentals



差分放大器系列AD8324 数据手册DataSheet 下载
差分放大器系列AD8324 数据手册DataSheet 下载

... be 180 degrees out of phase and of equal amplitude. A vernier is used in the input stage for controlling the fine 1 dB gain steps. This stage then drives a DAC, which provides the bulk of the AD8324’s attenuation. The signals in the preamp and DAC blocks are differential to improve the PSRR and line ...
PURE SINE WAVE INVERTER FOR HOUSE BACKUP
PURE SINE WAVE INVERTER FOR HOUSE BACKUP

... more in shape to a sine wave. This can be seen in Figure 1, which displays how a modified sine wave tries to emulate the sine wave itself. The waveform is easy to produce because it is just the product of switching between three values at set frequencies, thereby leaving out the more complicated cir ...
RA01L9595M 数据资料DataSheet下载
RA01L9595M 数据资料DataSheet下载

... 2.RA series products (RF power amplifier modules) are designed for consumer mobile communication terminals and were not specifically designed for use in other applications. In particular, while these products are highly reliable for their designed purpose, they are not manufactured under a quality a ...
BDTIC www.BDTIC.com/infineon Wireless Control and Tire Pressure Monitoring ICs
BDTIC www.BDTIC.com/infineon Wireless Control and Tire Pressure Monitoring ICs

... This document gives guidelines for RF Design Review and Verification of designs based on Infineon’s Wireless Control and TPMS integrated circuits. It covers all application segments such as automotive, industrial and consumer electronics and provides best-practice aspects and checklists for exhausti ...
Peter O`Shea. "Phase Measurement
Peter O`Shea. "Phase Measurement

... (1) is common in many theoretical treatments of phase, and for that reason is adopted in this chapter. It should be noted, however, that assumption (2) has some benefits from a measurement perspective, because the zero-crossing position is easier to measure than the maximum. The measurement of phase ...
CGD15HB62LP
CGD15HB62LP

... • PWM Signals: High side and low side PWM must be differential signals 4. The termination impedance of the differential receiver is 250 Ω. A reference single-ended to differential converter is available as an optimized companion product. Overlap protection is provided to prevent both the high side a ...
Low Distortion Differential RF/IF Amplifier AD8351 Data Sheet
Low Distortion Differential RF/IF Amplifier AD8351 Data Sheet

... The AD8351 is a low cost differential amplifier useful in RF and IF applications up to 2.2 GHz. The voltage gain can be set from unity to 26 dB using a single external gain resistor. The AD8351 provides a nominal 150 Ω differential output impedance. The excellent distortion performance and low noise ...
MAX2686/MAX2688 GPS/GNSS Low-Noise Amplifiers General Description Features
MAX2686/MAX2688 GPS/GNSS Low-Noise Amplifiers General Description Features

... needed to form the input matching circuit. The Typical Application Circuit shows the recommended inputmatching network. These values are optimized for the best simultaneous gain, noise figure, and return loss performance. The value of the input coupling capacitor ...
Electronic and Optical Transmission
Electronic and Optical Transmission

The Design and Testing of an Automatic RF Conditioning System for
The Design and Testing of an Automatic RF Conditioning System for

Contents - Metravi
Contents - Metravi

... (2) Refer to the desiring for the power. Move the line voltage converter to the “correct” position. (3) Connect power cable to the AC input. · Insure that the fuse used is an authorized product. In order to prevent circuit damage resulting from over current, use the correct fuse value for the primar ...
INTRODUCTION
INTRODUCTION

< 1 ... 172 173 174 175 176 177 178 179 180 ... 409 >

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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