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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TEM wave is a special type of TM wave in which an electric field E along the direction of propagation is also zero. Derive the field configuration, cut off frequency and velocity of propagation for TM waves in rectangular wave — guides? The circle diagram may be used to find the input impendence of a line m of any chosen length. What is the dominant mode for the rectangular waveguide?

Since the root value of TE11 is lower than TM01TE11 is the dominant or the lowest order mode for a circular waveguide. Prove that the velocity of propagation? An infinite line is a line in which the length of the transmission line is infinite. Define reflection loss Reflection loss is defined as the number of nepers or decibels by which the current in the load under image matched conditions would exceed the current actually flowing in the load Derive the expression for the resonant frequency of the circular cavity resonator?

What are the types of loading?

Remember me on this computer. Explain about transverse electromagnetic waves between a pair of perfectly conducting planes? When a signal having many transmkssion components are transmitted along the line, all the frequencies will not have equal attenuation and hence the received end waveform will not be identical with the input waveform at the sending end because each frequency is having different attenuation.

Derive the expression for the resonant frequency of the rectangular cavity resonator?

## EC2305 Transmission Lines and Wave guides QUESTION PAPER

What is meant by cavity resonator? Define Propagation constant Propagation constant is defined as the natural logarithm of the ratio of the sending end current or voltage to the receiving end current or voltage of the line. What are the methods used for constructing a resonator? The input impendence of eighth wave line terminated in a pure resistance Rr.

How will you make standing wave measurements on coaxial lines? TM01 mode is preferred to the TE01 mode in a circular waveguide, since it requires a smaller diameter for the same cut off wavelength. Derive the expression for wavgeuides field strength for TE waves between parallel plates propagating in Z direction?

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

trransmission The frequency at which the e2c305 motion ceases is called cut-off frequency of the waveguide. When the operating frequency is lower than the cut-off frequency, the propagation constant becomes real i.

Wave Calculations Guided Notes. Define wave impedance and write the expression for wave impedance of TE waves in rectangular guide. A half wavelength line may be considered as a one- to. What are the performance parameters of microwave resonator? The TEM waves are waves in which both electric and magnetic fields are transverse entirely but have no components of Ez and Hz.

Give the equation for the radius of a circle diagram. The secondary constants of a line are: This type of distortion is called frequency distortion.

An application of the short circuited quarter wave line is an insulator to support an open wire lnes or the center conductor of a coaxial line. An important application of the quarter wave matching sectionis to a couple a transmission line to a resistive load such as an antenna. This application makes se of the fact that the input impendence of a quarter. What do you mean by copper insulators?

A quater wave line may be considered as an impendence inverter because it can transform a low impendence in to ahigh impendence and vice versa.

What are the characteristics of principal wave? What is the use of eighth wave line?

Why are rectangular wave-guides preferred over circular wave-guides? Help Center Find new research papers in: Give the input impedance of open and short circuited lines. What is cut off frequency? What is called standing wave ratio? Explain about degenerate tansmission in rectangular wave guide? Calculate attenuation and phase constant for the loaded line. 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.

What is resonant frequency of microwave resonator? What is a smooth line? The points along the line where magnitude of voltage or current is zero are called nodes while the the points along the lines where magnitude of voltage or current first maximum are called antinodes or loops. Assume free space within the cavity. The ratio of the maximum to minimum magnitudes of voltage or current on a line having standing waves called standing waves ratio.

At very high frequencies transmission ed2305 resonator does not give very high quality factor Q due to skin effect and radiation loss. Calculate the cut-off wavelength, the guide wavelength and the characteristic wave impedance for the TE mode.

What is a distortion less line? Why circular waveguides are not preferred over rectangular waveguides?