• 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
SGA2163Z 数据资料DataSheet下载
SGA2163Z 数据资料DataSheet下载

... infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time with ...
HVAC (Rooftop Heater)
HVAC (Rooftop Heater)

... In order to minimise noise emission, the RGC1P can be operated in a full cycle switching mode. This is done by a simple selection from a knob located on the front interface. ...
AM PEAK DETECTOR
AM PEAK DETECTOR

... an AM peak detector comprises a carrier frequency and its upper and lower side frequencies (i.e., an AM envelope). A diode is a nonlinear device. Therefore, nonlinear mixing (heterodyning) occurs between the carrier and its associated side frequencies. The difference between the upper side frequency ...
Q.1 Name the mode of propagation of radio waves which travel in
Q.1 Name the mode of propagation of radio waves which travel in

... from the plane of the slits. The slits are illuminated with light of wavelength600nm. Find the distance of the third bright fringe, from the central maximum, in the interference pattern obtained on the screen. If the wavelength of incident light were changed to 480nm, find out the shift in the posit ...
Experiment # 9
Experiment # 9

... (analog) oscilloscope we get an analog representation of such a signal. Today mainly digital equipment is used for electrical measurements. The original analog signal is converted to a digital signal. A digital signal is discrete with respect to the magnitude as well as to the time. Therefore, conve ...
Infra Red Remote Control Extender Mark 4
Infra Red Remote Control Extender Mark 4

... the 5 Volt output signal to 12 Volts for the 555 timer. When an IR signal is received, decoded control pulses turn Q1 off and on. Each time Q1 turns off, pin 4 of the 555 timer goes high and an oscillation will be produced for the duration of each data pulse. The 555 is wired as an equal mark/space ...
Trig-Tek™ Product Information
Trig-Tek™ Product Information

... The Trig-Tek™ 45EMD Portable Calibrator is a convenient signal generator and is especially useful for field testing of monitoring systems. It has the required outputs to simulate a variety of pickups, temperature pressure, vibration (acceleration, velocity or displacement), or it can be used in a la ...
Signal Converter 3429 - Aanderaa Data Instruments AS
Signal Converter 3429 - Aanderaa Data Instruments AS

localization of small fast moving objects using doppler radar
localization of small fast moving objects using doppler radar

... This paper addresses issues linked with design of a Doppler radar localization system. At first a proposed design is presented, then hardware requirements are discussed. Detailed description is devoted to logarithmic amplifier theory as it plays crucial part in the final design. The last part descri ...
HFA3101 - Intersil
HFA3101 - Intersil

ADMS-250 Programming Software for the Yaesu FT-250
ADMS-250 Programming Software for the Yaesu FT-250

... The Programmer allows you to create and save as many files as you want for your radio. Files can even be shared between users via email or the Internet. Any RT Systems Version 4 program can open a file from any other RT Systems Version 4 programmer... even from a different radio. Managing all the op ...
EUP2410  1.6A, 500KHz Synchronous Step-up  Converter
EUP2410 1.6A, 500KHz Synchronous Step-up Converter

... The EUP2410 is a highly efficient, synchronous, fixed frequency, current-mode step-up converter with output to input disconnect. When EUP2410 is disabled, the internal conduction path from SW to OUT is fully blocked and the OUT pin is isolated from the battery. This output disconnect feature reduces ...
Lec 04
Lec 04

... Satellite Microwave Applications ...
Technical Basics - 2 - Chelmsford Amateur Radio Society, G0MWT
Technical Basics - 2 - Chelmsford Amateur Radio Society, G0MWT

Sinusoidal Steady
Sinusoidal Steady

... The natural response of a series RLC circuit may be underdamped, overdamped, or critically damped. The transition from overdamped to criticallydamped occurs when o2   .2 The transition from an overdamped to an underdamped response occurs when Q=1/2. A circuit whose frequency response contains a s ...
ECE 3235 Electronics II
ECE 3235 Electronics II

... The first part of the experiment is to construct and characterize an amplifier whose poles are set accurately by capacitors and resistors. First connect the circuit shown in Figure 1 using 741 OpAmps and ±15 V power supply voltages. Measure, and record the exact value of each component in the circui ...
Capacitor Self
Capacitor Self

... On a logarithmic grid, the numbers 1, 2, 5, and 10 (in any decade) are about equal distances from each other. Since gain plots are usually drawn on log-log grids, it is common practice to acquire data in frequency increments of 1, 2, 5, 10. For example, if the desired frequency range starts at 10 Hz ...
555 Timers (word)
555 Timers (word)

... Use the scope to measure to voltage on capacitor C. What voltage does the capacitor get to when the light turns off? Increase the Vcc voltage to 9 volts. ...
2 Way FM Car Starter (TA: Saurav K
2 Way FM Car Starter (TA: Saurav K

SGA2286Z 数据资料DataSheet下载
SGA2286Z 数据资料DataSheet下载

... The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or ot ...
project 1
project 1

... A PLL circuit can be used to create an FM signal. The input to the phase comparator is the carrier signal, and assuming that the carrier frequency is within the capture range of the PLL, the VCO output frequency will be equal to the carrier frequency. Now if the VCO control voltage is the sum of the ...
Low-power, Low-noise, Low -voltage Amplifier for Very Low
Low-power, Low-noise, Low -voltage Amplifier for Very Low

... noise and the voltage offset of the preamp stage. • The modulated signal is then input into a preamp where it is added with the offset voltage and noise, and then amplified. • The amplified output is amplitude modulated with the same carrier signal as the original low power, low frequency signal. • ...
RF Measurement and Control - Colorado State University
RF Measurement and Control - Colorado State University

... considerations and external field interruptions cause us to operate elsewhere on the curves. This causes loss and unnecessary heat. Reduce the size of the circuit to achieve benefits of a portable device. ...
A Wide Locking Range Differential Colpitts Injection Locked
A Wide Locking Range Differential Colpitts Injection Locked

resonance experiment
resonance experiment

... The plot of phase against frequency goes from negative to positive with the phase difference at Fres being zero. The resistor changed the Q factor. The bigger resistor gave the lowest Q factor. The results were a bit noisy (see the last graph). I could have done better with more ...
< 1 ... 371 372 373 374 375 376 377 378 379 ... 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