HomeworkLib
Question

A system has an effective resistance of 1 MOhm. Calculate the shot noise when using three...

A system has an effective resistance of 1 MOhm. Calculate the shot noise when using three different bandwidth oscilloscopes (80 GHz, 200 MHz, and 50 MHz), assuming that the different scopes do not alter the effective resistance.

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Write the expression for short noise. V 4kTFR For 80 GHz, V4(1.38x103 (298K)(80x10Hz) (102) 0.0363 V For 200 MHz, v= 14(1.38×10-23 JK)(298K)(200x10°Hz)(106Ω) 1.81x10V For 50 MHz, V=114(1.38x10-23 J/K)(298 K)(50x106 Hz)(106Ω) 9.07x104 v

0 0
Add a comment
Know the answer?
Add Answer to:
A system has an effective resistance of 1 MOhm. Calculate the shot noise when using three...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Problem #2 (2 points) ive resistance of 1 MOhm. Calculate the shot noise when using three...

    Problem #2 (2 points) ive resistance of 1 MOhm. Calculate the shot noise when using three A system has an effecti different bandwidth oscilloscopes (80 GHz, 200 MHz, and 50 MHz), assuming that the different scopes do not alter the effective resistance Problem #3 (2 points) Which signal is most likely to suffer from 1/noase? Which signal is most likely to suffer from thermal noise? (a) 1Hz (b) 10Hz (c) 100Hz (d) 1kHz

  • 2. A diode can be used as a white noise generator. Calculate the magnitude of shot noise if 100 V is applied to a diode in series with a 10 Ω resistor when measured with an instrument that has a 1...

    2. A diode can be used as a white noise generator. Calculate the magnitude of shot noise if 100 V is applied to a diode in series with a 10 Ω resistor when measured with an instrument that has a 100 kHz bandwidth. a. If the shot noise signal above is taken across the resistor and amplified by 105 calculate the shot noise at the amplifier output b. 2. A diode can be used as a white noise generator. Calculate...

  • A detection system with a bandwidth of 250Hz has a signal to noise ratio of 12...

    A detection system with a bandwidth of 250Hz has a signal to noise ratio of 12 when the detector is at room temperature. Calculate the new signal to noise ratio if the detector is cooled to -196 °C and the bandwidth is reduced to 10Hz for (a) thermal noise and (b) shot noise.

  • Consider a typical optical receiver that contains a InGaAs pin photodiode, a load resistor, and an...

    Consider a typical optical receiver that contains a InGaAs pin photodiode, a load resistor, and an amplifier. The receiver has the following parameters at the wavelength 1.15e-5 m: The dark current is 5.0 nA, the quantum efficiency is 0.85, and the surface leakage current is negligible. The incident optical power is 3 mW, load resistance is 50 ohm, and the effective noise bandwidth of the receiver is 1 GHz. (1)   Determine the photocurrent Iph .               (2)   Calculate...

  • 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)

  • Question 7 1 pts A length of coaxial cable has a shield resistance of Rs =...

    Question 7 1 pts A length of coaxial cable has a shield resistance of Rs = 2 ohms and a shield inductance of Ls = 1 microH. Over what frequency range will this cable be useful as a shielded conductor for suppressing magnetic field noise? Of< 320 kHz Of<2 MHz Of> 320 kHz 320 kHz<f<2 MHz Question 8 1 pts In the circuit shown, L1 = 20 uH, Ls = M= 15 uH, and Rs = 1 12. The load...

  • 1. Suppose log10(x) = 25. Calculate log2 (x) by calculating x and then calculating log2 (x)....

    1. Suppose log10(x) = 25. Calculate log2 (x) by calculating x and then calculating log2 (x). Be sure to show the instructions you gave to R, as well as the value of x and the final result. 2. Find log2 (x), as in (1) without calculating x, by multiplying by something. 3. Suppose log2 (x) = 25. Calculate log10(x) for y = 25 by calculating x and then calculating log10(x). Be sure to show the instructions you gave to R,...

  • Q2 Fig.2 is a simplified diagram of a WCDMA system downlink signalling 20 construction, in which different channel...

    Q2 Fig.2 is a simplified diagram of a WCDMA system downlink signalling 20 construction, in which different channelization code CensF are used to PAPER CODE: EEE326/17-18/S2/ exam Page 2 of 6 separate different physical channels in downlink whilst the scrambling code Sa is used to differentiate the BSs. Each physical channel is assigned to different user with a gain factor Gi. Assume QPSK modulation is employed for digital transmission and the spectrum is 3.84 MHz. One user has a data...

  • a) A security system for a building has three ways of detecting an intruder. 1. Security...

    a) A security system for a building has three ways of detecting an intruder. 1. Security camera (SC) which sends a 1 when an intruder is detected. 2. Motion sensor (MS) which sends a 0 when an intruder is detected. 3. Noise level detector (NLD) which sends a 1 when the noise level rises beyond a certain threshold. The system should work such that the alarm should sound when: • SC doesn’t detect an intruder but the MS and the...

  • A security system for a building has three ways of detecting an intruder. 1. Security camera...

    A security system for a building has three ways of detecting an intruder. 1. Security camera (SC) which sends a 1 when an intruder is detected. 2. Motion sensor (MS) which sends a 0 when an intruder is detected. 3. Noise level detector (NLD) which sends a 1 when the noise level rises beyond a certain threshold. The system should work such that the alarm should sound when • SC doesn’t detect an intruder but the MS and the NLD...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT