• 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
SGA-3286 Product Description DC-5000 MHz, Cascadable SiGe HBT MMIC Amplifier
SGA-3286 Product Description DC-5000 MHz, Cascadable SiGe HBT MMIC Amplifier

... Tone Spacing Spacing == 11 MHz, MHz, Pout Pout per per tone tone == 0-5dBm dBm ...
UNIT 18 - Index of
UNIT 18 - Index of

... AM r.f. carrier is non-sinusoidal (i.e. its amplitude changes), it must contain other frequencies—see section 3.3. It can be shown that, if a sinusoidal r.f. carrier of frequency f C, is amplitude modulated by a sinusoidal a.f. signal of frequency fS, three different sinusoidal, constant amplitude ...
Lect_16
Lect_16

Home Audio Equipment Measurements
Home Audio Equipment Measurements

O A RIGINAL RTICLE
O A RIGINAL RTICLE

... Portable Solar Headphone Amplifier is a simple application project for a data transmission using solar cell. The is by converting the sound waves which propagated by air into light energy then converting back the light energy which received at the receiver to a electrical energy. The converting proc ...
Document
Document

... Sounds as a sum of different signals each with a different frequency. ...
voltage-controlled oscillator for fm broadcast radio receiver
voltage-controlled oscillator for fm broadcast radio receiver

Precision Variable Frequency Drive
Precision Variable Frequency Drive

... Synchronous motors are motors that run at a specific speed. A customer may want to run the motor at different speeds, like for a record player that needs to operate at 45 and 33 1/3 rpm. A precision variable frequency drive is a way to speed up or slow down the motor by changing the frequency of the ...
ECE 3323 Section 2.1 Signals Power and Energy
ECE 3323 Section 2.1 Signals Power and Energy

Sample Study Material
Sample Study Material

... The radio receiver best suited to this task is known as the super heterodyne receiver. ...
Sine Processing
Sine Processing

... (Image 1.3: Sine processing - 2D graph icon in red quadrant) Bellow you can see an example of three COLA (on top) and three resulting amplitudes (left) and phases (right). Data can be stored directly to D7D file and exported to standard export formats supported by Dewesoft. Time data does not need t ...
clicking here
clicking here

Principles of Electronic Communication Systems
Principles of Electronic Communication Systems

... Linear amplifiers are class A, AB or B. The class of an amplifier indicates how it is biased.  Class A amplifiers are biased so that they conduct continuously. The output is an amplified linear reproduction of the input.  Class B amplifiers are biased at cutoff so that no collector current flows w ...
Ch.14
Ch.14

... • A filter is passive if it consists only of passive elements, R, L, and C. • They are very important circuits in that many technological advances would not have been possible without the development of filters. ...
HAMTRONICS® R303 VHF FM RECEIVER: INSTALLATION
HAMTRONICS® R303 VHF FM RECEIVER: INSTALLATION

... INSTALLATION, OPERATION, & MAINTENANCE ...
13 Technician Multi Mode
13 Technician Multi Mode

... HF, VHF and UHF single-sideband communications? ...
Nonlinear Equalization Processor IC for Wideband Receivers and Sensors
Nonlinear Equalization Processor IC for Wideband Receivers and Sensors

... keep up with very high data rates. In order to reduce the algorithmic unit complexity, block floating point arithmetic is used instead of floating point arithmetic. The numbers of mantissa and exponent bits were varied depending on the signal processing functions in order to maximize the throughput ...
Lab #9 - facstaff.bucknell.edu
Lab #9 - facstaff.bucknell.edu

Introduction to Small Signal Model
Introduction to Small Signal Model

Chapter 8 - UniMAP Portal
Chapter 8 - UniMAP Portal

... – Selectivity in a receiver is obtained by using tuned circuits and/or filters. – LC tuned circuits provide initial selectivity. – Filters provide additional selectivity. – By controlling the Q of a resonant circuit, you can set the desired selectivity. – The optimum bandwidth is one that is wide en ...
Additional questions about Data & Signals
Additional questions about Data & Signals

... be implemented? And why these kind of devices are necessary? In devices like DSU because digital data must be converted to digital signals for proper transmission over a medium. ...
The Wein-Bridge Oscillator - Electrical and Computer Engineering
The Wein-Bridge Oscillator - Electrical and Computer Engineering

Hybrid Go-Kart University of Connecticut Department of Electrical
Hybrid Go-Kart University of Connecticut Department of Electrical

... Platform • High-current sections of a boost converter placed on separate platform, connected by cables. • Current and voltage sensor output to ...
project2 335 - UTK-EECS
project2 335 - UTK-EECS

... (e) Perform SPICE simulation to obtain the Q-point of the BJT and run transient simulation to obtain output voltage waveform using a sinusoidal input waveform. Use AC analysis to verify the midband voltage gain when the output signal is 5V peak-peak at 10 kHz. Also, obtain the maximum output voltage ...
A 40 meters CW QRP Transceiver
A 40 meters CW QRP Transceiver

... The mixer stage employs a double balanced NE602 IC and provides about 18 dB of gain. The local oscillator coil is made by 64 turns of of enameled 0.25 mm wire on a T50-2 Amidon toroid. The overall frequency span is controlled by the C13 capacitor; with a 68 pF value you may cover the entire 40 m ban ...
< 1 ... 377 378 379 380 381 382 383 384 385 ... 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