EC6602 -VI SEM.pdf - LATHA MATHAVAN ENGINEERING COLLEGE...

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LATHA MATHAVAN ENGINEERING COLLEGEKidaripatti, Madurai625301Subject: EC6602 Antennas & Wave PropagationYear & Semester: III year ECE / VI SEMFaculty: Mr.M.ANANDAN, ASP/ECEQuestion Bank & University Questions with AnswerUNIT 1 Question BankPART1.What is the significance of gain of an Antenna? (Nov 2015)2.Define the brightness temperature of the antenna? (Nov 2015)3.Write the importance (significance) of radiation resistance of an Antenna? (May 2015, 2011)4.What is the significance of aperture of the antenna? (May 2015)5.Compare short dipole from half wave dipole?(May2014)6.Draw E and H plane radiation pattern of a Dipole? (May2014)7.Define Isotropic radiator (Nov 2014)8.Distinguish between power gain and directive gain. (Nov2014)A9.Compare the Short Dipole and half Wave Dipole?(May 2013)10.Calculate the Rr of/8 wire dipole in free space?(May2012)11.Define Directivity and effective aperture of an Antenna? (May2012)12.Define Half Power Beam Width? (May 2012)13.If the Radiation Resistance of an Antenna is 65Ω &loss resistance is 10Ω, find its efficiency? (Nov2012)14.What are theandpatterns in Antenna radiation pattern? (Nov/Dec 2012)15.What are the dBiand dBd? Write their significances? (Nov 2012)16.What is Hertizian Dipole?(Nov 2011)PART1.Explain the following parameters of an Antenna:(i) Radiation pattern(ii) Gain(iii) Polarization(iv) Bandwidth (Nov2015, 2011)2.Examine the effectiveness of the following parameters of an antenna : (i) Beam Solid Angle(ii) Directivity (iii) Pattern Lobes (iv) Input impedance (Nov 2015)3.A thin dipole is/15 long. Ifit has loss resistance of 1.5Ω,Calculate: (i) Directivity (ii) Gain(iii) Effective Aperture (iv) Beam Solid Angle (v) Radiation Resistance. (Nov 2015)4.Derive the Electric and Magnetic field components of a Hertzian dipole. (May2015)5.Derive the field quantities and draw radiation pattern for a half wavelength dipole. (May 2011, 2015)6.(i) Two space crafts are separated by 3 Km. Each has an antenna with directivity D=200 operating at 2 GHz.If craft A’s receives 20 db power what is the transmitted power by the craft B? (May2015)(ii) Explain the following terms with respect to Antenna: (1) Polarization (2) Effective Aperture(3)Directivity (May2015)7.Derive the expression for power radiated and find the radiation resistance of a half wave dipole?(May2014)8.Solve the Wave equation for uniform plane waves in an infinitely extending conducting medium (May2012)9.Explain the following parameters of an Antenna:(a) Beam Solid Angle(3) (b) Radiation pattern(3)(c) Gain (3)(d) Polarization(4)(e) Bandwidth(3) (Nov2011)10.What are Hertizian dipoles? Derive the Electric and Magnetic field quantities of infinitesimal dipoleand radiation pattern? (16 Mark) (Nov2011)11.Explain the principle operation of Yagi Uda array with neat schematic diagram? ( May ,Nov 2011)12.Explain the following terms with respect to Antenna: (a) Polarization(4) (b) Effective Aperture (3)(c) Directivity (3) (d) Antenna Temperature (3) (e) Radiation Pattern (3) (May 2011)13.(i) Define and explain the polarization and its significance in Antenna analysis? (8 mark ) (Nov2011)(ii) State and prove Lorentz Reciprocity Theorem for Antennas? (8) (Nov2011)B
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Term
Spring
Professor
WANG
Tags
Polarization, Radio frequency antenna types

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