Antenna Unit Test II questions
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This document discusses antenna array design and analysis. It defines different types of antenna arrays including broadside arrays, endfire arrays, and uniform linear arrays. It also covers topics like pattern multiplication, non-uniform amplitude distributions, binomial arrays, and designing radiation patterns for two-element and four-element arrays. Additionally, it discusses designing broadside arrays using Tchebyscheff polynomials to optimize sidelobe levels and calculating relative amplitudes for arrays. Horn antenna design equations and pyramidal horn antenna field components are also explained.
Antenna Unit Test II questions
- 1. Part A 1. Define Broad Side Array. 2. Define End Side Array. 3. Define Uniform Linear Array 4. Difference between broadside and end side array. 5. Define principle of Pattern Multiplication. 6. List different types of non-uniform amplitude distribution. 7. Define Binomial Array. 8. List the advantages of Pattern Multiplication. Part B 1. Design the radiation pattern of a two element array separated by λ/2 distance of equal amplitude and in phase. 2. Design the radiation pattern of a two element array separated by λ/2 distance of equal amplitude and are opposite in phase.
- 2. 3. Design a broadside array of a four element separated by a λ/2 distance and plot its radiation pattern (field pattern). 4. Design a end fire array of a four element separated by a λ/2 distance and plot its radiation pattern (field pattern). 5. Design a four element broad side array with optimum pattern side lobe level 19.1db below main lobe using Tchebyscheff polynomial. 6. A 7 element array with optimum pattern side lobe level is -20db below main lobe using Tchebyscheff polynomial design relative amplitude.
- 3. 7.Explain in detail about Horn antenna design equation. 8. Explain in detail about Pyramidal horn antenna’s field component.