INTRODUCTION: LAB Antenna System Trainer is a versatile trainer. Student can understand the basic principles of EM theory and the directivity patterns of various types of antennas. The fundamental principles of radio waves, and the basic operating action and characteristics of different types of antennas can be studied. TOPICS COVERED : Study of VSWR (Voltage Standing Wave Ratio). Study of Impedance. Study of Antenna gain. Study of Directional Antenna. Measurements of Front to Back ratio (FBR) Study of Radiation pattern: plotting of curve - Manual Rotation. Study of Polarisation - Discrimination. SOURCE: 1. RF Signal Generator : 700MHz Range. 2. Isotropic Radiator : 2Nos. 3. Field strength Meter TYPES OF ANTENNAS: (EACH 1-NO) 4. Dipole Antenna 5. Folded Dipole Antenna 6. Yagi Antenna : 3 Element - Folded Dipole Radiator. 7. Yagi Antenna : 5 Element - Folded Dipole Radiator. 8. Yagi Antenna : 5 Element -Simple Dipole. 9. Yagi Antenna : 3Element -Simple Dipole 10. Yagi Antenna : 7 Element. 11. Ground Plane Antenna 12. Hertz Antenna 13. Zeep line Antenna 14. Slot antenna. 15. Loop Antenna. 16. Rhombus Antenna. 17. Phase array l /4. 18. Phase array l /2. 19. Log Periodic Antenna 20. Helical Antenna 21. Parabolic Antenna 22. Combined Collinear Array. |