This project proposes a Python GUI based simulator to study AM. A user can vary various parameters—such as modulation index, amplitude and frequency of modulating signal, and carrier signal—and observe the output. The project can be used to simulate the signal modulation by radio engineers for designing different carrier signals and their modulation and demodulation.
This GUI is developed in Python 3.10.1 by using Jupyter Notebook. As only two components are used for the project, as shown in the bill of material, there is no need of any circuit diagram. Just connect the LCD to Raspberry Pi via an HDMI cable connector.
For amplitude modulation, the carrier waveform is modulated according to instantaneous amplitude of the message (baseband) signal. To understand, let us consider a sinusoidal wave as the message signal that needs to be transmitted. Let us say, the amplitude of message signal is Am and its frequency is fm. The mathematical time-domain representation of the message signal would be: m(t) = Am.cos (2π/ƒmt) ........Eq 1
The carrier signal is a high frequency radio wave with amplitude Ac and frequency fc, which is represented by: c(t) = Ac.cos (2π/ƒct) ........Eq 2
The equation of modulated waveform is:
The modulation index defines modulation level, which can be defined as:
Software installation
Denne historien er fra February 2023-utgaven av Electronics For You.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra February 2023-utgaven av Electronics For You.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
TRULY INNOVATIVE ELECTRONICS -INNOVATION UPDATES
Amongst numerous press releases of new products received by us, these are the ones we found worthy of the title Truly Innovative Electronics
Elastomer enhancing smart wearable performance
A high-tech, flexible wearable device made from the innovative elastomer material
Nanotechnology based noninvasive cancer diagnostics
Nanoflake sensors built from indium oxide with platinum and nickel detect changes in isoprene
Space communication with silent amplifiers
In the new communication system from researchers at Chalmers University of Technology, in Sweden, a weak optical signal (red) from the spacecraft's transmitter can be amplified noisefree when it encounters two so-called pump waves (blue and green) of different frequencies in a receiver on Earth.
Advancements in TOPCon solar cells
The structure and performance of tandem devices with highly passivated TOPCon bottom cells
Quantum leap in magnetism refines superconductors
Rice University physicists have uncovered key magnetic and electronic properties in kagome magnets, structures resembling basket-weaving patterns.
Sensor targets food antioxidants
A research team from Hunan City University and Xiangtan University in China has developed a sensor for detecting TBHQ, a food antioxidant used in oils and fats, addressing health concerns at high concentrations.
Data sensing with repurposed RFID tags
UC San Diego researchers have advanced passive data collection with a breakthrough in battery-free sensing.
Seal-inspired sensors to safeguard offshore wind farms
Schematic structure of the seal whisker-inspired flow sensors
Artificial nose identifies scents accurately
Artificial nose identifies scents accurately
