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    KULLIYYAH OF ENGINEERING DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING ANTENNA AND WAVE PROPAGATION LABORATORY (ECE 4243 L) EXPERIMENT NO:1 “DIPOLE ANTENNA”   1 ANTENNA LAB REPORT LAB REPORT SUBMISSION Students are required to submit the reports within 7 days after performing the experiment. The reports should be submitted at the lab. REPORT FORMAT The following format is one that should be followed by the students in all their laboratory reports: 1.   Cover Page 2.   Objectives 3.   List of Components 4.   Procedures 5.   Theory 6.   Results and Plotting Graph 7.   Discussion of Result 8.   Conclusion Of these listed above each section included in a report should be clearly nominated with the appropriate heading. The information to be given in each section is set out below: 1.Cover Page: The cover page of the report should include the experiment title, the lab instructor, the members names’, the matric numbers and the date of the experiment. DO NOT WRITE THE DATE OF SUBMISSION. 2.Objectives: It may be verification of law, a theory or observation of particular phenomena. Writing out the aim of experiment is important to the student as it emphasized the  purpose for which the experiment was conducted. 3.List of Components: In this section, a record should be made of all major components that were used in the experiment. The information is best given in tabulated form or diagram. 4.Procedures: In this section, the students should briefly provide a description of the procedure which was necessary obtained a set of experimental results. Students should use the correct tenses. DO NOT EXACTLY COPY THE WORDS FROM THE LAB MANUAL. 5.Theory: In this section, the students should briefly provide the related theories. Obtaining information related to the experiment from textbooks, internet or journals is HIGHLY encouraged.   2  6.Results and Plotting Graph: Results must be tabulated neatly. Wherever necessary, use the given tables in the lab experimental manual. Students should plot using the polar graph which is provided with the lab manual. 7.Discussion of Result: Once the analysis of the result is completed, the students must form some deductions on the result of their analysis. The students should be able to express their own ideas on the experiment results and how well they have been able to analyze the results and make deduction on the analysis of the result. It is very rare experiment in which the results are entirely without some discrepancy. The student should explain what factors, in their opinions, may be the possible causes to the discrepancies. Similarly, results of an unexpected nature should form the basis for a discussion of their possible nature and cause. The students should not be reluctant to give their opinions even though they may not be correct. They should regard their discussions as an opportunity to demonstrate their reasoning ability. 8.Conclusion: It is recommended that the conclusion should be made by clear and concise explanations, based on the experiment results. Usually this involves deducting whether the final results show the aim of the experiment has been achieved or not, and if they verify some laws or theories presented to the students during the lectures. GRADING Grading is distributed as follows: REPORT FORMAT SECTION POSSIBLE SCORE Objectives 1 Procedures 2 Theory 2 Results and Plotting Graph 2 Discussion of Result 3 TOTAL 10 The highest mark for each report is 10. However, the report marks can be deducted if any of its formats are not satisfied. ATTENDANCE Students who are absent will have a zero grading unless they have reasonable excuses.   3 DIPOLE ANTENNAS OBJECTIVE To become familier with dipole antennas. To broaden our knowledgr of the assembly and mode of operation. To experimentally investigate the influences of various antenna lengths and capacitive loads on the directional diagram. INTRODUCTION The dipole is one of the oldest and simplest forms of antenna. It is used in all of the microwave frequency ranges and on up to the long-wave range. Its radiation properties are dependent on a ratio1/ λ   (dipole length/wavelength). In actual practice, the antenna length is normally between 1/3 λ   and 5/4 λ   and only rarely exceeds 2 λ  . Since our antenna experiments are carried out in the X-band, in the frequency range f = 9.40 ±0.05 GHz dimensions suitable for work in the laboratory. Consequently, they can be investigated without entailing difficulties. EQUIPMENTS i.   1 Rotating antenna platform 737 400 ii.   1 Gunn power supply with SWR meter 737 021 iii.   1 Gunn oscillator 737 01 iv.   1 Isolator 737 06 v.   1 Pin Modulator 737 05 vi.   1 Large Horn Antenna 737 21 vii.   2 RF cable, L = 1 m 501 02 viii.   2 Supports for waveguide components 737 15 ix.   2 Stand base MF 301 21 x.   1 Set of microwave absorbers 737 390 xi.   1 Set of 10 thumb screws M4 737 399 xii.   1 Remote control for rotating antenna platform 737 401 xiii.   1 Dipole antenna kit 737 410
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