IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... Design methodology of a low cost fsk signal transmitter The coded information forming the baseband frequency is used to switch on two oscillators of predetermined frequencies [12]. The 2 transistors Q1 and Q2 used, are either in a turn-off position (OV) or saturation (+5V) with the incoming digital ...
... Design methodology of a low cost fsk signal transmitter The coded information forming the baseband frequency is used to switch on two oscillators of predetermined frequencies [12]. The 2 transistors Q1 and Q2 used, are either in a turn-off position (OV) or saturation (+5V) with the incoming digital ...
Digital Modulation
... If a symbol (0,0,0) is transmitted, it is clear that if an error occurs, the transmitted signal is most likely to be mistaken for (0,0,1) and (1,1,1) and the signal being mistaken for (1,1,0) is remote. The decision pertaining to (0,0,0) is bounded by = /8(below 1(t)- axis) to = + /8 ( above ...
... If a symbol (0,0,0) is transmitted, it is clear that if an error occurs, the transmitted signal is most likely to be mistaken for (0,0,1) and (1,1,1) and the signal being mistaken for (1,1,0) is remote. The decision pertaining to (0,0,0) is bounded by = /8(below 1(t)- axis) to = + /8 ( above ...
Question Bank
... QUESTION BANK of COMMUNICATION CIRCUIT AND SYSTEM 1 1. Communication is the process of (a) Keeping in touch (b) Braodcasting (c) Exchanging information (d) Entertainment by electronics ...
... QUESTION BANK of COMMUNICATION CIRCUIT AND SYSTEM 1 1. Communication is the process of (a) Keeping in touch (b) Braodcasting (c) Exchanging information (d) Entertainment by electronics ...
Radar Signal Processing
... • The rate of change of the phase (d/dt) of the orderly signals is deterministic unlike the d/dt of the interferer signals ...
... • The rate of change of the phase (d/dt) of the orderly signals is deterministic unlike the d/dt of the interferer signals ...
Principles of Electronic Communication Systems
... 1. Spectrum space is conserved and allows more signals to be transmitted in the same frequency range. 2. All power is channeled into a single sideband. This produces a stronger signal that will carry farther and will be more reliably received at greater distances. 3. Occupied bandwidth space is narr ...
... 1. Spectrum space is conserved and allows more signals to be transmitted in the same frequency range. 2. All power is channeled into a single sideband. This produces a stronger signal that will carry farther and will be more reliably received at greater distances. 3. Occupied bandwidth space is narr ...
Effects of Frequency Domain Phenomena on Time Domain Digital
... delays due to the current components “hugging” the corner increasing the mean length • 2 rights do not necessarily equal a left and a right, especially for wide traces • 45o bends, round and chamfered bends exhibit reduced effects Interconnect II ...
... delays due to the current components “hugging” the corner increasing the mean length • 2 rights do not necessarily equal a left and a right, especially for wide traces • 45o bends, round and chamfered bends exhibit reduced effects Interconnect II ...
Reducing the Peak to Average Power Ratio of Multicarrier
... Hence, to avoid non{linear distortion and spectral spreading of the transmit signal highly linear ampli ers operating with a large back{o have to be used. In many papers methods to reduce the PAR are proposed. But either complexity and redundancy are high and/or only small gains in PAR are achieve ...
... Hence, to avoid non{linear distortion and spectral spreading of the transmit signal highly linear ampli ers operating with a large back{o have to be used. In many papers methods to reduce the PAR are proposed. But either complexity and redundancy are high and/or only small gains in PAR are achieve ...
Section 4: INTRO TO DIGITAL TRANSMISSION
... reference or 'clock'. The clock is a circuit which generates a 'timing waveform' which is usually a regular sequence of rectangular timing pulses. The timing waveform is normally not transmitted. A timing waveform must also be available at the receiver to indicate the time-points at which the channe ...
... reference or 'clock'. The clock is a circuit which generates a 'timing waveform' which is usually a regular sequence of rectangular timing pulses. The timing waveform is normally not transmitted. A timing waveform must also be available at the receiver to indicate the time-points at which the channe ...
Synchronous demodulator
... function generator of t e RX433 board is used. As the wanted signal a sine wave of frequency 1500 HZ is selected. Set up the experiment circuit below. Activate theTX433 board and set the function generator to a DC-free sine wave of frequency f=1500 HZ and Upp=2v. On the frequency generator of the RX ...
... function generator of t e RX433 board is used. As the wanted signal a sine wave of frequency 1500 HZ is selected. Set up the experiment circuit below. Activate theTX433 board and set the function generator to a DC-free sine wave of frequency f=1500 HZ and Upp=2v. On the frequency generator of the RX ...
Infrared PWM Transmitter
... information regarding the proximity of the train; a loud whistle means the train is near, a faint whistle means it is far away. Similarly the variation in pitch of the whistle (frequency) might give some additional clues about the direction of motion via the Doppler effect: if the frequency is incre ...
... information regarding the proximity of the train; a loud whistle means the train is near, a faint whistle means it is far away. Similarly the variation in pitch of the whistle (frequency) might give some additional clues about the direction of motion via the Doppler effect: if the frequency is incre ...
amplitude modulation
... 1. Spectrum space is conserved and allows more signals to be transmitted in the same frequency range. 2. All power is channeled into a single sideband. This produces a stronger signal that will carry farther and will be more reliably received at greater distances. 3. Occupied bandwidth space is narr ...
... 1. Spectrum space is conserved and allows more signals to be transmitted in the same frequency range. 2. All power is channeled into a single sideband. This produces a stronger signal that will carry farther and will be more reliably received at greater distances. 3. Occupied bandwidth space is narr ...
Document
... providing flawless operation even in the complicated electromagnetic environment. The frequency tuning algorithm implemented in NLJD automatically selects the probing signal frequency such that the noise level in the 2nd harmonic receiving channel is held minimal, while digital processing of a demod ...
... providing flawless operation even in the complicated electromagnetic environment. The frequency tuning algorithm implemented in NLJD automatically selects the probing signal frequency such that the noise level in the 2nd harmonic receiving channel is held minimal, while digital processing of a demod ...
chapter 2 - WordPress.com
... For an AM DSCFC wave with a peak unmodulated carrier voltage Vc = 10 Vp, a load resistor of RL = 10 and m = 1, determine a) Powers of the carrier and the upper and lower sidebands. b) Total sideband power. c) Total power of the modulated wave. d) Draw the power spectrum. ...
... For an AM DSCFC wave with a peak unmodulated carrier voltage Vc = 10 Vp, a load resistor of RL = 10 and m = 1, determine a) Powers of the carrier and the upper and lower sidebands. b) Total sideband power. c) Total power of the modulated wave. d) Draw the power spectrum. ...
Continuous-wave radar
Continuous-wave radar is a type of radar system where a known stable frequency continuous-wave radio energy is transmitted and then received from any reflecting objects. Continuous-wave (CW) radar uses Doppler, which renders the radar immune to interference from large stationary objects and slow moving clutter.CW radar systems are used at both ends of the range spectrum. Inexpensive radio-altimeters, proximity sensors and sport accessories that operate from a few dozen feet to several kilometers Costly early-warning CW angle track (CWAT) radar operating beyond 100 km for use with surface-to-air missile systems↑ ↑