A radio frequency receiver comprises the 3 main sub-systems, as shown in the diagram below: INPUT RF IF IF OUTPUT AMP AMP1 AMP2 Noise Figure F1= 6dB G1 = 10DB F2= 6.5dB G2= 20DB F3 = 6.5dB GAIN G3 = 30DB (1) Define the term noise figure; (ii) Calculate the overall noise figure of the above receiving system; (iii) If the input signal-to-noise power ratio (SNR) is 10 dB, calculate the output SNR (dB).

Q: modulation is used. Calculate (a) the frequency of the carrier crystal oscillator and (b) the phase…

A: A transmitter must operate at a frequency of 160 MHz with a deviation of ± 4 kHz.It uses two…

Q: 3. An FM broadcast transmitter is modulated 50% by a 7-kHz test tone. When the frequency of the test…

A: Answer:—Given that the modulation is 50%Fm = 7 kHz when Fm is changed to 5 kHz, then transmitter…

Q: (a) Explain any two factors which justify the need of modulating a low frequency signal. (b) Write…

A: Given: (a) Explain any two factors which justify the need of modulating a low frequency signal. (b)…

Q: define marconni antenna with diagrams and label

A: Marconi antenna used at below 2 MHz frequency. Marconi antenna required a conducting path of ground…

Q: The main problem with the TRF receiver design is a. lack of sensitivity in receiving all AM…

A: Choose the correct option The main problem with the TRF receiver design is?

Q: What is the purpose of the limiter circuit in the FM system? to remove the variation in the FM…

A:

Q: (b) Figure 12 shows the block diagram of a simplé radio transmitter. transmitting аerial microphone…

A: Given block diagram

Q: n a superheterodyne receiver, why is it important to convert the RF Signal to IF Signal before…

A: Superhetrodyne Receiver :It is a radio receiver which consists the frequency level which is the…

Q: Q2] Describe the image station problem in the supper-heterodyne receivers. How can we overcome it?

A:

Q: 3.22 A superheterodyne receiver uses an IF frequency of 455 kHz. The receiver is tuned to a…

A: It is given that:- IF frequency = 455 kHz Carrier frequency = 1100 kHz

Q: Explain why using double side band with suppressed carrier (DSB-SC) in a communication system is…

A:

Q: For practical applications cavity resonators can be modified as per the requirement of the…

A: For practical applications, cavity resonators can be modified as per the requirement of the…

Q: How is the "Vp" pitch voltage calculated? Draw the "transfer curve for JFET (pinch)?

A: The objective of this question is to understand how to calculate the pinch-off voltage (Vp) and how…

Q: increases as the length of channel increases. (interference, distortion, additive noise,…

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: Q\ Compare between the method used to detect the FM signal (frequency Discriminator) and…

A: initially all three methods are explained individually . comparision sare done at the end.

Q: 1. Draw the AM transmitter block diagram. Identify the amplifiers in each stage. 2. Draw the low…

A:

Q: Q3: design a frequency modulation transmitter, let the modulator has the following characteristics…

A:

Q: Derive the effect of phase and frequency errors between the local oscillator signal and the received…

A: Let us assume m(t) is a mesage signal adn corrsponding a SSB modylated signal (Upperside band…

Q: Define signal-to-noise figure of receiver. A receiver connected to an antenna vhose resistance is…

A:

Q: what is the history of amoled

A: AMOLED is a display technology and it's acronym is Active Matrix Organic Light Emitting Diodes.

Q: 3. In a FM system, the modulating frequency fm= WR be the new deviation ? If the modulating voltage…

A: Modulation is process by which some properties of carrier signal is varied according to modulating…

Q: a)Define (i) Sensitivity and (ii) Fidelity of a radio receiver ) b)Draw typical selectivity and

A: According to guidelines we need to solve only first question. According to the question we have to…

Q: What are the types of signal degradations that may be encountered in transmission over the channel ?

A: The objective is to determine the the types of signal degradation

Q:

A: In this question,  We need to differentiate between narrow band and wide band frequency modulation…

Q: In balance slope detection method if the signal has a high value of amplitude, how the interference…

A:

Q: Draw the low power FM transmitter block diagram. Identify the amplifiers in each stage

A: FM transmitter- FM transmitter is defined as a device which is used to transmit the frequency…

Q: Spectrum analyzer screen 8V₁ 4V OV 450 460 kHz

A: We are authorized to answer three sub-parts at a time, since you have not mentioned which part you…

Q: A message signal has bandwidth of 1 kHz Hz to 21 kHz. It frequency modulates a 100 MHz carrier. The…

A:

Q: The phenomenon of a strong FM signal dominating a weaker signal on a common frequecny is referred to…

A: Choose the correct option The phenomenon of a strong FM signal dominating a weaker signal on a…

Q: Outline the needs of signal modulation to transmit information in communication systems

A: We need to outline the need of modulation .

Q: Que. Differentiate between Narrow Band and Wide Band Frequency Modulation schemes.

A: Differentiate between Narrow Band and Wide Band Frequency Modulation schemes

Q: B 4. 7411 ZAS 10 1 7411 OLI FIGURE 3

A:

Q: What is the purpose of a limiter stage in an FM broadcast receiver?

A: PURPOSE OF A LIMITER STAGE IN A FM BROADCAST RCEIVER: Generally all the FM receivers consists of…

Q: Q1-Derive the effect of phase and frequency errors between the local oscillator signal and the…

A: Given :   In the question they want to know the effect of phase and frequency errors which are…

Q: Q2: A sinusoidal carrier voltage of frequency 1 MHz and amplitude 100 volts is modulated by…

A:

Q: A)lower cutoff frequency of the circuit? B)upper cutoff frequency of the circuit?

A:

Q: Why is DC COUPLE recommended when measuring a low frequency signal?

A: Coupling is the way to defined that how the circuits are interconnected with each other. DC…

Q: When sending images from a satellite, a gridded (frequency) noise would be added into the original…

A: We have to Give a Method the used in Satellites communication for Noise removing from Image

Q: bandwidth

A: In the above question the bandwidth, carrier frequency and peak voltage are known.

Q: (4) A PM signal has a deviation ratio of 3. The maximum modulating signal is 5 kHz. The bandwidth of…

A: In this question we need to find a bandwidth frequency

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.