Asked Feb 11, 2020

Noise Figure of an amplifier is given as 10 dB. If the ambient temperature is 290 K, then what will be the equivalent noise temperature?


Expert Answer

1 Rating
Step 1

The noise figure (NF) and noise factor (F) of an amplifier are related by the following equation:

Electrical Engineering homework question answer, step 1, image 1

In this case, the values of the noise figure of the amplifier and the ambient temperature are given as

Electrical Engineering homework question answer, step 1, image 2

Step 2

Using equation (1), the value of the noise factor of the amplifier will be

Electrical Engineering homework question answer, step 2, image 1

Step 3

The equivalent noise temperature of the amplifier depends on the noise factor of the amplifier and it can be expressed as

Electrical Engineering homework question answer, step 3, image 1



Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in


Electrical Engineering

Related Electrical Engineering Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Find out the field strength at 1 on away from an isotopic station of 1 kW power.

A: Unlike directive transmitting stations which transmit in a specific direction, an isotropic station ...


Q: A parabolic antenna system is having a dish diameter of 10 m and the feed is connected at 10 GHz. Wh...

A: Parabolic antenna belongs to the class of reflector type antenna. Gain of parabolic antenna can be e...


Q: Please help!

A: The labeled circuit diagram is given as


Q: z Parameters 2.3 Given the two-port circuit below. VI V2 a) Find the z parameters. b) Is the circuit...

A: Z-parameter is also called the impedance parameter.Redrawing the given circuit diagram by marking th...


Q: Show that VSWR for a transmission line will have values between 1 and infinity.

A: Although expression of standing wave ratio ‘S’


Q: P1.27. Figure P1.27 shows an ammeter (AM) and voltmeter (VM) connected to measure the current and vo...

A: Referring to the question, the current flowing in the voltmeter is very small hence neglect the curr...


Q: Give me the reactance of inductor of inductance 500 mH and frequency of 10 MHz?

A: The given values of inductance and frequency are:


Q: With respect to Discrete Fourier Transform, prove that: W(k+N/2)N=WNk where W is the twidle factor

A: In Discrete Fourier Transform (DFT) terminology, the twiddle factor is defined by


Q: A shirt vertical grounded antenna is designed to radiate at 10 MHz. What will be radiation resistanc...

A: Radiation resistance is a fictitious resistance. When an antenna radiates, the total power radiated ...