Would an amplifier with a noise figure of 10db be useful as the first stage in...
Would an amplifier with a noise figure of 10db be useful as the first stage in a system? (RF design)
Please explain in detain
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Would an amplifier with a noise figure of 10db be useful as the
first stage in...
A radar receiver consists of a unity noise figure, antenna with cable loss of 1dB, an...
A radar receiver consists of a unity noise figure, antenna with cable loss of 1dB, an RF amplifier with noise figure of 6dB and gain of 20dB and is followed by a mixer whose noise figure is 10dB, conversion loss is 8dB. Finally, an integrated circuit IF amplifier is cascaded with noise figure of 6dB and gain of 60dB. Calculate the overall noise temperature and noise figure of this radar receiver.
Problem 3: a) For the inverting amplifier designed using low noise amplifier AD743 shown on the...
Problem 3: a) For the inverting amplifier designed using low noise amplifier AD743 shown on the bottom of the page with Ri=10kOhm and Rf=220kOhm, what should be the value of the resistor connected to the non-inverting input (R2) to minimize the output offset due to input bias current? b.) Even if the R2 value you calculated is used, could there be an output offset due to a difference between the two input bias currents? What is the maximum value of...
Noise, noise figure, microwave theory, Please attempt both, clearly show me all the steps. Please 3. Derive an expression for noise figure for a cascaded amplifier section. What deduction can you make...
Noise, noise figure, microwave theory, Please attempt both,
clearly show me all the steps. Please
3. Derive an expression for noise figure for a cascaded amplifier section. What deduction can you make from this equation? . Assuming you have three amplifiers with the following parameters in table Q1; Table Q1 AmplifierNoise Figure (dB)] Gain (dB) 6 20 20 7 7.4 10 Gh3 How would would you arrange these amplifiers in a cascade to minimise the noise figure?
3. Derive an...
12 oblem # 6 The front-endof has a a radio receiver has a preamplifier followed by a mixer stage. The mixer stage with lactorN2-100 and the pre amplifier has NF, 9 dB. The overall noise factor of...
12 oblem # 6 The front-endof has a a radio receiver has a preamplifier followed by a mixer stage. The mixer stage with lactorN2-100 and the pre amplifier has NF, 9 dB. The overall noise factor of the 11.04. Suppose a signal of power-level equal to 5 dBm is watts,h imput of the preamplifier. Determine the output power-level of the preamplifier in Useful hint-Friis formula: SOLUTION
12 oblem # 6 The front-endof has a a radio receiver has a preamplifier...
A two-stage amplifier is shown in figure 7.75. It is constructed by cascading two one-stage amplifiers...
A two-stage amplifier is shown in figure 7.75. It is constructed
by cascading two one-stage amplifiers of the type seen in Problem
7.2.
PROBLEM 7.3 A two-stage amplifier is shown in Figure 7.75. It is constructed by cascading two one-stage amplifiers of the type seen in Problem 7.2. In analyzing this amplifier, use the MOSFET model described in Problem 7.2 and illustrated in Figure 7.74. V. V. OUT VIN MID a) The fact that a second amplifier stage is connected...
VS W l such a junction? (5 c) Suppose a (200+j75)- load is to be matched...
VS W l such a junction? (5 c) Suppose a (200+j75)- load is to be matched to a 300-2 transmission line to give SWR = 1. Determine the reactance of the stub and the characteristic impedance of the quarter-wave transformer, both connected directly to the load. d) (5 marks) i. For a given communication system, briefly explain the meaning of the following terms: Thermal Noise, Noise Figure, and Noise Temperature. A given communication system has a 12 GHz receiver that...
I need help with 3.1 through 3.5 if possible . 3. For the two stage amplifier...
I
need help with 3.1 through 3.5 if possible .
3. For the two stage amplifier Vcc-15V, Rsig-10Kohm, RL 2Kohm, First stage amplifier, RG 90Kohm, SV R3 RD115Kohm, RSI-2Kohm, gm 1mS and ro -20Kohm for transistor M1, Second stage amplifier, R3-40Kohm, . CI C4 7Kohm Lower corner frequency fi 3KHz. RSI Determine the configuration of the first and second stage amplifier. Configuration of first stage is Configuration of second stage is For Q3, find r,, gm. Rm"Re:9oka 1. - 2....
29. Identify the type of third stage amplifier: a) inverting amplifier; b) differential amplifier with passi load; c) differential amplifier with current mirror load; d) emitter follower; e...
29. Identify the type of third stage amplifier: a) inverting amplifier; b) differential amplifier with passi load; c) differential amplifier with current mirror load; d) emitter follower; e) none of above; 30. The Vsg of Q5 should be: a)-1V, b)-0.85% c) 0.65% d)0.85% env 31. To obtain IREF-30μΑ , the value of R should be: a)250ohm; b)25Kohm; c)250Kohm; d)2.5Mohm; e 5Mohm. network is composed by 4 identical phase shifter. The phase shift of each phase shifter in degree should be...
Noise-related problems Question # B.4 An RF system having a RF-bandwidth of 1 MHz, has a...
Noise-related problems Question # B.4 An RF system having a RF-bandwidth of 1 MHz, has a front-end preamplifier of gain (A) equal to 20 dB and a noise-figure (NF) of 4 dB. The preamplifier is followed by a mixer stage with a NF 18 dB. Suppose the signal-to-noise ratio (SNR) at the mixer output is 30 dB, find the SNR at the preamplifier input. Hint: Use Friis formula: Answer hints: NF (Total) 4.96 dB)
Connect the Multistage Amplifier circuit as shown in Figure 1. VCC T 15.0V R4 TR8 34700...
Connect the Multistage Amplifier circuit as shown in Figure 1. VCC T 15.0V R4 TR8 34700 R6 $390 *3.3k02 3 C4 SR2 200k C2 0.01F C1 Q2 2N7000 *2N7000 42 HA 2N2222A V1 100mVpk 5kHz 0.01F 0.1npF R5 (R7 6.8ko 1500 R9 $5600 282ko First stage : CS Second Stage: CE Figure / Multi Stage Amplifier Circuit Connect each stage in the multistage circuit in figure 1 separately 1) Measure the Q points for both transistors Q1 and Q2 record...
Noise, noise figure, microwave theory, Please attempt both,
clearly show me all the steps. Please
3. Derive an expression for noise figure for a cascaded amplifier section. What deduction can you make from this equation? . Assuming you have three amplifiers with the following parameters in table Q1; Table Q1 AmplifierNoise Figure (dB)] Gain (dB) 6 20 20 7 7.4 10 Gh3 How would would you arrange these amplifiers in a cascade to minimise the noise figure?
3. Derive an...
12 oblem # 6 The front-endof has a a radio receiver has a preamplifier followed by a mixer stage. The mixer stage with lactorN2-100 and the pre amplifier has NF, 9 dB. The overall noise factor of the 11.04. Suppose a signal of power-level equal to 5 dBm is watts,h imput of the preamplifier. Determine the output power-level of the preamplifier in Useful hint-Friis formula: SOLUTION
12 oblem # 6 The front-endof has a a radio receiver has a preamplifier...
A two-stage amplifier is shown in figure 7.75. It is constructed
by cascading two one-stage amplifiers of the type seen in Problem
7.2.
PROBLEM 7.3 A two-stage amplifier is shown in Figure 7.75. It is constructed by cascading two one-stage amplifiers of the type seen in Problem 7.2. In analyzing this amplifier, use the MOSFET model described in Problem 7.2 and illustrated in Figure 7.74. V. V. OUT VIN MID a) The fact that a second amplifier stage is connected...
VS W l such a junction? (5 c) Suppose a (200+j75)- load is to be matched to a 300-2 transmission line to give SWR = 1. Determine the reactance of the stub and the characteristic impedance of the quarter-wave transformer, both connected directly to the load. d) (5 marks) i. For a given communication system, briefly explain the meaning of the following terms: Thermal Noise, Noise Figure, and Noise Temperature. A given communication system has a 12 GHz receiver that...
I
need help with 3.1 through 3.5 if possible .
3. For the two stage amplifier Vcc-15V, Rsig-10Kohm, RL 2Kohm, First stage amplifier, RG 90Kohm, SV R3 RD115Kohm, RSI-2Kohm, gm 1mS and ro -20Kohm for transistor M1, Second stage amplifier, R3-40Kohm, . CI C4 7Kohm Lower corner frequency fi 3KHz. RSI Determine the configuration of the first and second stage amplifier. Configuration of first stage is Configuration of second stage is For Q3, find r,, gm. Rm"Re:9oka 1. - 2....
29. Identify the type of third stage amplifier: a) inverting amplifier; b) differential amplifier with passi load; c) differential amplifier with current mirror load; d) emitter follower; e) none of above; 30. The Vsg of Q5 should be: a)-1V, b)-0.85% c) 0.65% d)0.85% env 31. To obtain IREF-30μΑ , the value of R should be: a)250ohm; b)25Kohm; c)250Kohm; d)2.5Mohm; e 5Mohm. network is composed by 4 identical phase shifter. The phase shift of each phase shifter in degree should be...
Noise-related problems Question # B.4 An RF system having a RF-bandwidth of 1 MHz, has a front-end preamplifier of gain (A) equal to 20 dB and a noise-figure (NF) of 4 dB. The preamplifier is followed by a mixer stage with a NF 18 dB. Suppose the signal-to-noise ratio (SNR) at the mixer output is 30 dB, find the SNR at the preamplifier input. Hint: Use Friis formula: Answer hints: NF (Total) 4.96 dB)
Connect the Multistage Amplifier circuit as shown in Figure 1. VCC T 15.0V R4 TR8 34700 R6 $390 *3.3k02 3 C4 SR2 200k C2 0.01F C1 Q2 2N7000 *2N7000 42 HA 2N2222A V1 100mVpk 5kHz 0.01F 0.1npF R5 (R7 6.8ko 1500 R9 $5600 282ko First stage : CS Second Stage: CE Figure / Multi Stage Amplifier Circuit Connect each stage in the multistage circuit in figure 1 separately 1) Measure the Q points for both transistors Q1 and Q2 record...
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