1
GATE ECE 1998
Subjective
+5
-0
The region between a pair of parallel perfectly conducting planes of infinite extent in the y and z directions is partially filled with a dielectric as shown in Figure. A 30 GHz $$T{E_{10}}$$ wave is incident on the air dielectric interface as shown. Find the
VSWR at the interface.
![GATE ECE 1998 Electromagnetics - Waveguides Question 7 English](https://imagex.cdn.examgoal.net/h4rq6fIOGOD3qwHV2/BNnBCrn77sxv0D76UeOLRkjQOwA4F/S1Kn7gxdw6mOlBGoMdsUCA/uploadfile.jpg)
![GATE ECE 1998 Electromagnetics - Waveguides Question 7 English](https://imagex.cdn.examgoal.net/h4rq6fIOGOD3qwHV2/BNnBCrn77sxv0D76UeOLRkjQOwA4F/S1Kn7gxdw6mOlBGoMdsUCA/uploadfile.jpg)
2
GATE ECE 1996
Subjective
+5
-0
In an air-filled rectangular waveguide, the vector electric field is given by
$$\mathop E\limits^ \to = \cos \,(20\,\pi \,y)\,\exp \,\,\left[ { - j\left( {{{40\,\,\pi } \over 3}} \right)\,z\, + j\,\omega \,t} \right]\,\hat i\,\,\,V/m$$
Find the vector magnetic field and the phase velocity of the wave inside the waveguide.
3
GATE ECE 1995
Subjective
+5
-0
A rectangular hollow metal waveguide is required to be so designed to propagate a 9375 MHz signal in its $$T{E_{10}}$$-mode that the guide-wavelength equals the cut-off wavelength. Calculate the value of 'a' (breadth or the wider dimension of the waveguide). Take b = a/2. Also, calculate the cut-off frequency of the next higher order mode.
4
GATE ECE 1994
Subjective
+5
-0
A rectangular hollow metal waveguide of internal cross-section of $$7.366\,\,cm\,\, \times \,\,3.556\,cm$$ carries a 3 GHz signal in the $$T{E_{10}}$$-mode. Calculate the maximum power handling capability of the waveguide assuming the maximum permissible electric field inside the waveguide to be 30 kV/cm
Questions Asked from Waveguides (Marks 5)
Number in Brackets after Paper Indicates No. of Questions
GATE ECE Subjects
Signals and Systems
Representation of Continuous Time Signal Fourier Series Discrete Time Signal Fourier Series Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Transmission of Signal Through Continuous Time LTI Systems Discrete Time Linear Time Invariant Systems Sampling Continuous Time Signal Laplace Transform Discrete Fourier Transform and Fast Fourier Transform Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Fourier Transform
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics