- What are the two basic types of RF modulation?
- What is the function of detector circuit?
- What is the difference between detector and demodulator?
- What is meant by detector?
- What is the function of a detector in gas chromatography?
- Which type of diode is used in radio receivers?
- What is a peak detector circuit?
- What is peak rectifier?
- What is a zero crossing detector?
- What are the types of detector?
- How does a diode detector work?
- What is a power detector?
- What is a diode detector?
- How does a clamper circuit work?
- What is characteristics of diode?
What are the two basic types of RF modulation?
The two forms of modulation that fall into the angle modulation category are frequency modulation and phase modulation..
What is the function of detector circuit?
An envelope detector is an electronic circuit that takes a (relatively) high-frequency amplitude modulated signal as input and provides an output which is the envelope of the original signal. An envelope detector is sometimes called as a peak detector.
What is the difference between detector and demodulator?
3 replies. A detector may be a device that recovers data of interest contained in a very modulated wave. Demodulation is up up to now type of detector, reception is that the act of extracting the first information-bearing signal from a modulated carrier.
What is meant by detector?
: one that detects: such as. a : a device for detecting the presence of electromagnetic waves or of radioactivity. b : a rectifier of high-frequency current used especially for extracting the intelligence from a radio signal.
What is the function of a detector in gas chromatography?
A chromatography detector is a device used in gas chromatography (GC) or liquid chromatography (LC) to detect components of the mixture being eluted off the chromatography column. There are two general types of detectors: destructive and non-destructive.
Which type of diode is used in radio receivers?
Varactor diodesVaractor diodes operate when they are reverse-biased. Varactor diodes are often used in RF circuits. They are used in voltage controlled oscillators in a phase locked loop. Practical applications of varactor diodes are radio receivers, cellular receivers and wireless receivers.
What is a peak detector circuit?
A peak detector circuit is a circuit that is able to measure the peak amplitude that occurs in a waveform. It is able to tell us what’s the highest value a waveform reaches. It is important because it can measure the maximum amplitude value of a signal.
What is peak rectifier?
Chapter 3 – Diodes and Rectifiers A peak detector is a series connection of a diode and a capacitor outputting a DC voltage equal to the peak value of the applied AC signal.
What is a zero crossing detector?
A zero-crossing detector or ZCD is one type of voltage comparator, used to detect a sine waveform transition from positive and negative, that coincides when the i/p crosses the zero voltage condition. … The applications of the Zero Crossing Detector are phase meter and time marker generator.
What are the types of detector?
The four types of fire detectors are ionization/photoelectric, photoelectric, ionization, and heat. The differences in these four types are found in how they detect a fire – heat is obviously triggered by temperature while the other three are from smoke.
How does a diode detector work?
A number of methods can be used to demodulate AM, but the simplest is a diode detector. It operates by detecting the envelope of the incoming signal which it does by rectifying the signal. … Its purpose is to remove any radio frequency components of the signal at the output.
What is a power detector?
MACOM’s power detectors are broadband devices that have integrated low loss directional couplers and built-in temperature compensation circuits. These detectors provide an easy way to monitor the power of a signal travelling in a specific direction along a transmission line.
What is a diode detector?
The diode detector is the simplest and most basic form of amplitude modulation, AM signal detector and it detects the envelope of the AM signal. The AM diode detector can be built from just a diode and a few other components and as a result it is a very low cost circuit block within an overall receiver.
How does a clamper circuit work?
A clamper circuit shifts the DC level or the reference level of the signal to the desired level without changing the shape of the waveform. … Some times the biasing voltage is also added with the clamper circuit to shift the DC level to the desired voltage level.
What is characteristics of diode?
Electrical Characteristics of Diodes Basic static characteristics of diodes are the forward voltage VF and forward current IF, and the reverse voltage and current VR and IR.