Electronics and Communication Engineering
GATE ECE Waveguides, optical fibers and antennas PYQs
Build your understanding with focused practice from past exam papers.
How to practice Waveguides, optical fibers and antennas
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 52
Open questionECMSQ2 marksNeeds review
A waveguide consists of two infinite parallel plates (perfect conductors) at a separation of
cm, with air as the dielectric. Assume the speed of light in air to be
m/s. The frequency/frequencies of TM wave which can propagate in this waveguide is/areYour answerSelect all correct options. You can choose more than one.
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Open questionECMCQ2 marksNeeds review
Standard air-filled rectangular waveguides of dimensions
cm and
cm are designed for radar applications. It is desired that these waveguides operate only in the dominant
mode with the operating frequency at least 25% above the cutoff frequency of the
mode but not higher than 95% of the next higher cutoff frequency. The range of the allowable operating frequency
isYour answerChoose one option.
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