SSM INSTITUTE OF ENGINEERING AND TECHNOLOGYSindalagundu post, Dindigul – 624002.

Reg. No.

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

CYCLE TEST – 2SUBJECT CODE: EC

2353 SUBJECT NAME:Antennas and wave propogationYEAR & SEM:III& VI TIME:1.30HrDATE: 04.03.2015 MARKS: 50

PART – A (2*5 =10)

1. Compare short dipole from half wave dipole.2. What are the advantages of antenna arrays?3. Differentiate broad side and end fire array.4. What is pattern multiplication and draw the pattern of 2 point sources separated

By /2

5. Define HPBW and FNBW6. What is array factor?7. What are all the field components of loop antennas?8. How the loop antennas are used in direction finding?9. What is uniform linear array?10. State the advantages of binomial array.

PART – B (16*2=32+8=40)

11. Derive the Field components, radiation resistance, effective aperture and

Directivity of /2 (15)

(OR)12. i) Derive field components and radiation resistance of loop antenna. (8)

ii) Derive array factor of a uniform linear array. (7)

13. Derive the expression for field pattern of broad side array of n point sources. (15) (OR)

12. Derive the expression for field pattern of broad side array and end fire array of 2

Point sources. (15)

SSM INSTITUTE OF ENGINEERING AND TECHNOLOGYSindalagundu post, Dindigul – 624002.

Reg. No.

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

CYCLE TEST – 2SUBJECT CODE: EC 2353 SUBJECT NAME:Antennas and wave propogationYEAR & SEM:III& VI TIME:1.30HrDATE: 04.03.2015 MARKS: 50

PART – A (2*5 =10)

1. Compare short dipole from half wave dipole.2. What are the advantages of antenna arrays?3. Differentiate broad side and end fire array.4. What is pattern multiplication and draw the pattern of 2 point sources separated

By /2

5. Define HPBW and FNBW6. What is array factor?7. What are all the field components of loop antennas?8. How the loop antennas are used in direction finding?9. What is uniform linear array?10. State the advantages of binomial array.

PART – B (16*2=32+8=40)

11. Derive the Field components, radiation resistance, effective aperture and

Directivity of /2 (15)

(OR)12. i) Derive field components and radiation resistance of loop antenna. (8)

iii) Derive array factor of a uniform linear array. (7)

13. Derive the expression for field pattern of broad side array of n point sources. (15)

(OR)

12. Derive the expression for field pattern of broad side array and end fire array of 2

Point sources. (15)