• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
AN9789: Audio Quality Measurement Primer
AN9789: Audio Quality Measurement Primer

... towards describing the methods for measurement of key audio specifications. Each analysis technique described here in, can be applied to audio ADCs, DACs, Analog Mixers, or any signal within the audio band. Audio quality is typically gauged by three main components. They are Signal to Noise Ratio, T ...
RF3376 - Qorvo
RF3376 - Qorvo

... Note 1: All specification and characterization data has been gathered on standard FR-4 evaluation boards. These evaluation boards are not optimized for frequencies above 2.5GHz. Performance above 2.5GHz may improve if a high performance PCB is used. Note 2: The RF3376 must be operated below 50mA. 35 ...
On Solving Nonlinear Differential Equations by Windows PSpice
On Solving Nonlinear Differential Equations by Windows PSpice

... On Solving Nonlinear Differential Equations by Windows PSpice Software packages such as Mathematica, Mathcad, or Matlab can be used to solve nonlinear differential equations, but in this paper the CAD tool DesignLab, a version of Windows PSpice, is used to achieve the same purpose. DesignLab is orig ...
Appendix N - Assistive Listening Systems Performance Standards
Appendix N - Assistive Listening Systems Performance Standards

... being considered for a different induction loop system and produces an average magnetic field strength exceeding 15 mA/meter, then it is recommended that, unless the use of each system can be scheduled so as not to occur simultaneously, an induction loop system not be considered in the new area. 3. ...
DUAL FREQUENCY SIDE SCAN SONAR
DUAL FREQUENCY SIDE SCAN SONAR

... The Dual Frequency Side Scan Sonar is a tool for seabed feature mapping, offering high quality results in a simple and reliable package. It offers switch selectable dual frequency operation (114 / 410 kHz). The towfish is available in depth ratings of 1000 m and 2000 m. System Components The standar ...
Reading accelerometer specifications
Reading accelerometer specifications

... response limitations are the result of low frequency “highpass” filtering used by all manufacturers to reduce the amplifier noise at low frequencies generally caused by thermal events. In some cases, primarily low frequency sensors, there may also be high frequency “low-pass” filters used to elimina ...
Antenna Inputs With Voltage Caution All of the Hi
Antenna Inputs With Voltage Caution All of the Hi

... All of the Hi-Z Array systems use voltage over coax to supply operating power for their Hi-Z amps. The power is injected into the Antenna connectors on the controllers using normal inductors suitable for the purpose. It is certainly possible to damage these internal inductors if an intentional or un ...
ABFT Frequency Translator - Product Training Module
ABFT Frequency Translator - Product Training Module

SL MA-210 Optical Transmittance Analyzer  SPECIFICATIONS
SL MA-210 Optical Transmittance Analyzer SPECIFICATIONS

... Transmittance Analyzer (OTA) is an electronic interface that operates two fiber optic load sensors. The SL MA-210 serves as the interface between the fiber optic sensor and the processing unit on system level. It should be installed indoors or in a weatherproofed road side cabinet. The interface res ...
document
document

... the measurement of all low-level signals. It is very important that this ground is grounded separate and isolated from the system ground. In a single-point ground configuration, minimal current can flow in the ground reference. ...
Electronics & Signals
Electronics & Signals

... Refers to a desired electrical voltage, light pattern, or modulated electromagnetic wave ...
Current goals: Design low-power (100nA) ADC and DAC to have 3
Current goals: Design low-power (100nA) ADC and DAC to have 3

8-Pin High Efficiency Resonant Half
8-Pin High Efficiency Resonant Half

oscillators
oscillators

... type sinusoidal voltage and current waveform. This then forms the basis of an LC oscillators tank circuit and theoretically this cycling back and forth will continue indefinitely. However, every time energy is transferred from C to L or from L to C losses occur which decay the oscillations ...
Mixer design requires impedance matching at three ports
Mixer design requires impedance matching at three ports

DIGITAL ELECTRONICS, MICROPROCESSORS, AND COMPUTERS
DIGITAL ELECTRONICS, MICROPROCESSORS, AND COMPUTERS

... Digital circuits offer some important advantages over their analog counterparts. Digital circuits are less susceptible to environmental noise. Digitally encoded signals can be transmitted with a higher degree of signal integrity . Digital signals may be transmitted directly to digital computers. ...
150LECTURE18OPAMPSTIMERS Lecture Notes Page
150LECTURE18OPAMPSTIMERS Lecture Notes Page

... 25kV when run at 12v input and at the coil's resonant frequency (8kHz). Increasing the voltage output to about 50kV is possible if the input voltage is increased to 34v, however this risks burning out the switching transistors when the system is operated for an extended time. ...
Development of a Picosecond-resolution TDC for
Development of a Picosecond-resolution TDC for

... process, which includes CMOS and very high frequency SiGe bipolar transistors, Two types of time-to-analog converters have been simulated. The first is a Wilkinson time stretcher in which the time interval between the “start” and the “stop” signals has been stretched by a factor of 200. In this case ...
Intro to AC and Sinusoids
Intro to AC and Sinusoids

... Rotating a coil in fixed magnetic field generates sinusoidal voltage. ...
SGB-6433(Z) 数据资料DataSheet下载
SGB-6433(Z) 数据资料DataSheet下载

... RFMD’s SGB-6433 is a high performance SiGe HBT MMIC amplifier utilizing a Darlington configuration with an active bias network. The active bias network provides stable current over temperature and process Beta variations. Designed to run directly from a 5V supply the SGB-6433 does not require a drop ...
ATV Transmitter from a Microwave Oven!
ATV Transmitter from a Microwave Oven!

... The goal for this project was to provide an What Mode To Use? inexpensive, relatively simple high power The above conclusions ruled out AM microwave transmitter using a microwave double-sideband video, because of the large oven as the foundation. This project meets the incidental FM that would resul ...
LM567 - tone decoder
LM567 - tone decoder

... Chatter occurs in the output stage when C3 is relatively small, so that the lock transient and the AC components at the quadrature phase detector (lock detector) output cause the output stage to move through its threshold more than once. Many loads, for example lamps and relays, will not respond to ...
Should You Use Current or Voltage in Analog
Should You Use Current or Voltage in Analog

... DC Current (4-20mA) In contrast, a DC current loop offers several advantages in industrial settings. This signal is not as susceptible to electrical interference from high voltage AC, motors, pumps, or relays, nor is it susceptible to signal loss due to the length of the wiring run (voltage drop). A ...
Document
Document

... • Prior to sampling and AD conversion, the audio signal is also usually filtered to remove unwanted frequencies. The frequencies kept depend on the application: (a) For speech, typically from 50Hz to 10kHz is retained, and other frequencies are blocked by the use of a band-pass filter that screens o ...
Modulation
Modulation

< 1 ... 339 340 341 342 343 344 345 346 347 ... 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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report