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5
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27k
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Explain the construction and working of TRAPATT diode.
microwave devices and circuits updated 14 months ago by yashbeer ★ 11k
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875
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A reflex klystron operates under following conditions: $V_0=625 \mathrm{~V}, \mathrm{~L}=1 \mathrm{~mm}, \mathrm{R}_{\text {sh }}=14 \mathrm{~K} \Omega$ and $\mathrm{f}=8 \mathrm{GHz}$. ..
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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736
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Distinguish between probe and loop coupling mechanisms for waveguide components.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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690
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A rectangular waveguide of cross-section $5 \mathrm{~cm} X 2 \mathrm{~cm}$ is used to propagate TM11 mode at $9 \mathrm{G} \mathrm{Hz}$. Determine the cutoff wavelength and wave impedance.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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655
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Consider a plane wave normally incident on a half-space of copper. If $f=$ I $\mathrm{GHz}$, compute the propagation constant, impedance, and skin depth for the conductor. Also, compute the reflection
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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361
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Explain The Helmholtz Equation in detail.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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327
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A rectangular waveguide cavity is made from a piece of copper WR - $187 \mathrm{H}$-band waveguide, with $a=4.755 \mathrm{~cm}$ and $b=2.215 \mathrm{~cm}$. The cavity is filled with polyethylene..
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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274
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Explain the term quality factor of the resonator. How to measure the quality factor of resonant devices?
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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251
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What are cavity resonators? A rectangular waveguide cavity has the dimension $22.86$ $\mathrm{mm} \times...
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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221
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A rectangular wave guide of cross section $5 \mathrm{~cm} X 2 \mathrm{~cm}$ is used to propagate $T M_{11}$ mode at $9 \mathrm{G} \mathrm{Hz}$. Determine the cutoff wavelength and wave impedance.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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181
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Find the cut off frequency for $T M_{11}$ mode, given dimensions of the waveguide 2 $\mathrm{cm}$ and $4 \mathrm{~cm}$ respectively.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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178
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Explain Resistive loss and Dielectric loss in detail.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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176
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An aluminum waveguide with $a=4.2 \mathrm{~cm}, b=1.5 \mathrm{~cm}, \sigma_c=3.5 \times 10^7 \mathrm{mhos} / \mathrm{m}$, filled with telfon..
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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175
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1
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Explain Advantages and disadvantages of Microwaves compared to VHF.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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175
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What is Radiated loss? explain it.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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171
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1
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What is Coaxial cable attenuation? Explain it.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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167
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A rectangular waveguide is filled with air with dimension $2.28 \mathrm{~cm} \times 1.01 \mathrm{~cm}$ is operated...
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
0
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156
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Define the terms phase velocity and group velocity of a wave propagating through a rectangular waveguide.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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147
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Justify. Rectangular waveguides do not support TEM wave.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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141
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A plane wave with a frequency of $3 \mathrm{Gl} z$ is propagating in an unbounded material with $\epsilon_r=7$ and $\mu_r=3$. Compute the wavelength. phase velocity, and wave impedance for this wave.
microwave devices and circuits updated 11 months ago by prajapatijaimin • 3.0k
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