[Solved]Ecens52 Antenna Theory Design Assignment Spring 2018 19 Part 1 Group Assignment 10 Group A Q37251422
ECENS52 Antenna Theory and Design Assignment (Spring 2018/19) Part 1 (Group Assignment): 10% Group Assignment Guidelines 1. Title: Massive Multiple-Input Multiple-Output (MIMO) 2. The sequence in which the assignment report should be arranged and bound is as follows: a. Introduction b. History of communication systems (1G, 2G, 3G, 4G) c. Introduction to 5G d. What is MIMO? e. What is massive MIMO? f. Benefits of massive MIMO g. Comparison between SG and 4G features. h. Conclusion i. References: Please provide these in IEEE format (i.e. all the same throughout the list!), and indude authors, year, title of paper, journal, volume, and first and last page numbers. You may use numbers throughout the text for your references, but please include the full reference in the reference list. 20 to 30 references should be adequate. 3. The group assignment report should normally not less than 15 pages (excluding the appendix and references, ifany Presentation date will be announced soon. 4. 5. Please make sure that sufficient details are provided in the legend for the reader to understand the figure or table fully without reference to the text. Figure legendsgo at the bottom of the fi nds go at the top of the table. 6. Similarity check report must be provided. Similarity must be less than 25%. If Part 2 (individual Assignment): 10% Question1 The power radiated by a lossless antenna is 10 watts. The directional characteristics of the antenna are represented by the radiation intensity of U 2cos 0 watts/unit solid angle. Find the (a) Maximum power density at a distance of 1000 m (assume far-field distance) (b) Maximum directivity (c) Maximum gain Question 2 In target-search ground-mapping radars it is desirable to have echo power received from a target, of constant cross section, to be independent ofits range. For one such application, the desirable radiation intensity of the antenna is given by 0< 20° U(e,p)0.342 csc( 20° <0<60° 60° <θ< 180″ 0″ < ф < 3600 Find the directivity (in dB) Question 3 The normalized radiation intensity of a given antenna is given by b) U sin0sin2ф c) U-sinesin p e) U sin2 sin2 ф f) U sin2 sin3ф The intensity exists only in the 0 θ π,0 π region, and it is zero elsewhere. Find the φ (a) Exact directivity (b) Half-power beamwidths (in degrees) Question 4 A λ/2 dipole, with a total loss resistance of 2 ohm. is connected to a generator whos internal impedance is 50 j25 ohms. Assuming that the peak voltage of the generator is 3 V and the impedance of the dipole, excluding the loss resistance, is 73+j42.5 ohms, find the power (a) Supplied by the source (real) (b) Radiated by the antenna (c) Dissipated by the antenna Question S: The antenna and generator of Problem 4 are connected via a 50 ohm λ/2 long lossless transmission line. Find the power (a) Supplied by the source (real) (b) Radiated by the antenna (c) Dissipated by the antenna Question 6: The radiation intensity of an antenna can be approx imated by 90° < θ < 180° with 00 < ф < 360°. Determine the maximum effective aperture (in m) of the antenna if its frequency of operation is f- 10GHz Show transcribed image text ECENS52 Antenna Theory and Design Assignment (Spring 2018/19) Part 1 (Group Assignment): 10% Group Assignment Guidelines 1. Title: Massive Multiple-Input Multiple-Output (MIMO) 2. The sequence in which the assignment report should be arranged and bound is as follows: a. Introduction b. History of communication systems (1G, 2G, 3G, 4G) c. Introduction to 5G d. What is MIMO? e. What is massive MIMO? f. Benefits of massive MIMO g. Comparison between SG and 4G features. h. Conclusion i. References: Please provide these in IEEE format (i.e. all the same throughout the list!), and indude authors, year, title of paper, journal, volume, and first and last page numbers. You may use numbers throughout the text for your references, but please include the full reference in the reference list. 20 to 30 references should be adequate. 3. The group assignment report should normally not less than 15 pages (excluding the appendix and references, ifany Presentation date will be announced soon. 4. 5. Please make sure that sufficient details are provided in the legend for the reader to understand the figure or table fully without reference to the text. Figure legendsgo at the bottom of the fi nds go at the top of the table. 6. Similarity check report must be provided. Similarity must be less than 25%. If
Part 2 (individual Assignment): 10% Question1 The power radiated by a lossless antenna is 10 watts. The directional characteristics of the antenna are represented by the radiation intensity of U 2cos 0 watts/unit solid angle. Find the (a) Maximum power density at a distance of 1000 m (assume far-field distance) (b) Maximum directivity (c) Maximum gain Question 2 In target-search ground-mapping radars it is desirable to have echo power received from a target, of constant cross section, to be independent ofits range. For one such application, the desirable radiation intensity of the antenna is given by 0
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