COLLEGE OF ENGINEERING amp; TECHNOLOGY Department: Electronics and Communications Engineering Lecturer: Assoc. Prof. Abdalla Course: Microwave...

Page 1/2 _______________________________________________________________ Take Home Exam -Attempt all questions Question No.1 (10 -Point) : Design a fixed beam forming array antenna such that it has a maximum pattern at θD and has undesired pattern at θn.. The antenna array element separation is /2. Plot the resulting array factor and hence compute all possible antenna parameters antennas. Co mpare your results for the same array with no weighting The interference cancelation details are as in last page. Question No. 2 (10-Point ): Design a circular polarized microstrip patch antenna. Verify your answer using a CST code and extract the possible antenna parameters in addition to the axial ratio. The operating frequency, the antenna substrate and the polarization method are listed below in last page. Good Luck Department: Electronics and Communications Engineering Lecturer : Assoc. Prof. M. A. Abdalla Course: Microwave Antennas Course Code: EC742 Time: NA Date: Sat., May , 14, 2016 Total Marks: 20 COLLEGE OF ENGINEERING & TECHNOLOGY Page 2/2 The specification associated for each student No. ID Name Beamforming (Q1) Circular Polarized (Q2) 1 15120259 ىئاكبلا دمحم رهاطلا دمحأ ΘD=0 and θn=--15, 10, 30, 90 r=4.4, h=1.6 mm, f= 1.25 GHz and CP method using /4 TL feeding. 2 15120321 نميأ دمحأ نيناسح دمحم ىفطل ΘD=0 and θn=--30, 45, 60, 90 r=4.4, h=1. 6 mm, f= 1.55 GHz and CP method using /4 TL feeding. 3 15120271 كوربم حاتفلا دبع دمحم دمحأ ΘD=0 and θn=--15, 10, 30, 90 r=3.55, h=1.52 mm, f= 1.25 GHz and CP method using /4 TL feeding. 4 15120213 ىلع نسح نيسح ايركز ملاسا ΘD=-0 and θn=--15, 10, 30, 90 r=3.55, h=1.52 mm, f= 1.55 GHz and CP method using /4 TL feeding. 5 15120247 قداصلا ديمحلا دبع دمحأ نميأ ΘD=-30 and θn=-0, 15, 60, 90 r=2.2, h=1.58 mm, f= 1.25 GHz and CP method using diamond feed. 6 15220551 نسح دمحم دمحم قراط ΘD=30 and θn=--60, 0, 15, 30 r=2.2, h=1.58 mm, f= 1.55 GHz and CP method using diamond feed. 7 15220528 ىعافر ىلع دمحم ىلع ΘD=60 and θn=-45, 0,45,90 r=4.4, h=1.6 mm, f= 1.25 GHz and CP method using 45 degree slot. 8 14120395 ملاسلا دبع سابع نيدلا ءاهب ورمع ΘD=60 and θn=--60, 0, 60, 90 r=4.4, h=1.6 mm, f= 1.55 GHz and CP method using 45 degree slot. 9 14120456 نامثع ميعن ىدمح دمحم ΘD=-30 and θn=--60, 0, 45, 90 r=4.4, h=1.6 mm, f= 5.8 GHz and CP method using 45 degree slot. 11 15220520 رمع قيفوت نسحم دمحم ΘD=-30 and θn=-90, -45,0, 30 r=2.2, h=1.58 mm, f= 5.8 GHz and CP method using 45 degree slot. 11 14220514 ناميلس دمحأ اهم ΘD=-60 and θn=--90, -45, 0, 90 r=3.55, h=1.52 mm, f= 5.8 GHz and CP method using 45 degree slot. 12 14120356 ةنيكس دمحم رمع ماشه ΘD=-60 and θn=--90, 0, 30, 90 r=4.4, h=1.6 mm, f= 5.8 GHz and CP method using diagonal feed. 13 15220521 ةرامع دمحم دومحم ماشه ΘD=-45 and θn=-90,0,30,90 r=2.2, h=1.58 mm, f= 5.8 GHz and CP method using diagonal feed. 14 NA نيطنطسق رصان انر ΘD=45 and θn=-45,0,60 90 r=3.55, h=1.52 mm, f= 5.8 GHz and CP method using diagonal feed. 15 NA ديغأ دمحم ةنامج ΘD=75 and θn=-60, -30,30,90 r=4.4, h=1.6 mm, f= 5.8 GHz and CP method using /4 TL feeding.