Dear students here we provide notes for Anna university 5th sem Subject EC TRANSMISSION LINES AND WAVEGUIDES Lecture Notes pdf. you can . ec transmission lines and waveguides notesANNA UNIVERSITY ECE 5TH SEMESTERDETAILS: SUBJECT NAME: transmission lines. Imp Ec – Transmission Lines and Waveguides – Free download as PDF File .pdf), Text File .txt) or read online for free.

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If this is the case, the there occurs frequency and phase distortion in the line. Explain double stub matching on a transmission line and derive the expression and the length of the stub used for matching on a line? Trasnmission is TM01 mode preferred to the TE01 mode in a circular waveguide?

EC Transmission Lines And Wave Guides May June Question Paper

What is the dominant mode for TM waves in a circular waveguide The dominant mode for TM waves in a circular waveguide is the TM01 because it has the lowest root value of 2. What is a TEM wave or principal wave? A smooth line is one in which the load is terminated by its characteristic impedance and no waveguidea occur in such a line.

State the relation between standing were ratio S and reflection co-efficient k. Also, a The attenuation constant should be made independent of frequency.

Obtain the general solution of Transmission line? The performance parameters of microwave resonator are: Determine the reflection coefficient. Give the input linee of a dissipationless line. What are the types of cavity resonators?


Transmission line resonator can be built using distributed elements like sections of coaxial lines.

What is delay distortion? What is an evanescent mode? Determine the solution of electric and magnetic fields of TM waves guided along rectangular wave — guides? This non- propagating mode is known linse evanescent mode. Derive the expression for cut off frequency, phase constant and phase velocity of wave in a circular wave guide?

Why the point of voltage minimum is measured rather than voltage maximum? Skip to main content. What is the dominant mode for the TM waves in the rectangular waveguide? Give reasons for preferring a short- circuited stub when compared to an linss circuited stub.

The possible TE modes in a circular waveguide are: Loading is the process of increasing the inductance value by placing lumped inductors at specific intervals along the line, which avoids the distortion Transmission Lines – University of Surrey. An application of the short circuited quarter wave line is an linse to support an open wire line or the center conductor of a coaxial line. This requirement frequently calls for placement of the stub at an undesirable place from a mechanical view point.

Give the input impedance of open and short circuited lines. So the received end waveform will not be identical with the input waveform at the sending end because some frequency components will daveguides delayed more than those of other frequencies.

EC Transmission Lines and Waveguides question bank download:Exams n Results

If the transmission is not terminated in its characteristic impedance ,then there will be two waves traveling along the line rtansmission gives rise to standing waves having fixed maxima and fixed minima. The standing wave ratio S and the position of a voltage minimum are the independent measurements that must be made to find the location and length of the stub. Determine the characteristic impedance, propagation constant and wavelength for a source of f: What is an infinite line?


When a signal having many frequency components are transmitted along the line, all the frequencies will not have same time of transmission, some frequencies being delayed more than others.

A free-space medium is one in which there are no conduction currents and no charges. Explain about reflection loss?

EC2305 Transmission Lines and Wave guides QUESTION PAPER

What is cut off frequency? What are the performance parameters of microwave resonator? How is the circle diagram useful to find the input impendence of short and open circuited lines? Also discuss the application of quarter wave line? Measurements indicate that the standing wave wveguides are cm apart and that the last minimum is 35 cm from the load end of the line.

The difficulties of the smith chart are i Single stub impedance matching requires the stub to be located at a definite point on the line. Why rectangular or circular cavities can be used as trwnsmission resonators?

The range of values of standing wave ratio is theoretically 1 to infinity. Maximum input impedance, Minimum input impedance,