1. DESIGNING OF MICRO-STRIP ANTENNAS FOR WIDEBAND & UWB APPLICATIONS

2. CONTENTS What is an Antenna? Fundamental Parameters Of Antenna
Types of Antenna
Micro-strip Antenna
Types of feed
Design parameters and Equations
Simulations and results
Advantage and diadvantage
Real world example
conclusion
References

3. What is an Antenna?
A Microwave Transducer.

4. Fundamental Parameters of an antenna
Beamwidth
Directivity
Gain
Radiation pattern
Return Loss

5. Types Of Antennas 5 types of Antennas are there I. Wire Antenna
II. Aperture Antenna
III. Micro-strip Antenna
IV. Array Antenna
V. Reflector Antenna

6. MICRO-STRIP ANTENNAS

7. HISTORY Developed in 1952, gained popularity in 1974
Primarily used in aircraft, missiles, rockets, mobile satellites, communication

8. What is a Micro-strip Patch Antenna ?
The PCB which are used as substrate in MPA
radiates signal at high frequency.
Antenna engineers use this property.

9. Some Feeding Methods MS FEED

10. Some Feeding Methods cont…
PROBE FEED

11. DESIGN PARAMETERS AND EQUATIONS
Effective dielectric constant:
Width of the patch (for rectangular):

12. Length of the patch (for rectangular)
Radius of Circular patch

13. SIMULATION AND RESULTS(1)

15. RPA without slots(8GHz)

16. Return loss &Radiation Pattern
B.W.=400MHz

17. RPA with slots(8GHz)

18. Return loss & Radiation Pattern
B.W.=300MHz

19. RPA WITH SUBSTRATE VARIATION(SUB HEIGHT =0.2CM)

20. Return loss & Radiation Pattern
BW=NGBL

21. RPA WITH SUBSTRATE VARIATION(SUB HEIGHT =0.1CM)

22. Return loss & Radiation Pattern
BW=Negligible

23. COMPARISION: PROBE FEED: PARAMETERS WITHOUT SLOTS WITH SLOTS
WITHOUT SLOTS
WITH SLOTS
OPERATING FREQUENCY
8.2GHz
8.3GHz
BANDWIDTH
400MHz
300MHz
RADIATION PATTERN
good
somehow good
PARAMETERS
SUBSTRATE THICKNESS=0.32
SUBSTRATE THICKNESS=0.2
SUBSTRATE THICKNESS=0.1
OPERATING
FREQUENCY
8.2GHz
2.2GHz
7.9GHz
BANDWIDTH
400MHz
Negligible
RADIATION
PATTERN
Good
Somehow good
Not so good

24. CPA without slots(8GHz)

25. Return loss & Radiation Pattern
BW=700MHz

26. CPA WITH SUBSTRATE VARIATION (THICKNESS=0.2CM)

27. Return loss & Radiation Pattern
BW=800MHz

28. COMPARISION: CIRCULAR PATCH PARAMETERS WITH SUBSTRACT THICKNESS=0.32
OPERATING FREQUENCY
8.3GHz
16GHz
BANDWIDTH
500MHz
600MHz
RADIATION PATTERN
SIDE LOPES APPEARED

29. RPA WITH MS FEED(8GHz)

30. Return loss & Radiation Pattern
BW=500MHz

31. RPA WITH MS FEED(10GHz)

32. Return loss & Radiation Pattern
BW=500MHz

33. RPA WITH MS FEED(11GHz)

34. Return loss & Radiation Pattern
BW=700MHz

35. RPA WITH MS FEED(12GHz)

36. Return loss & Radiation Pattern
BW=900MHz

37. RPAWITH DIFFERENT SHAPES (MICROSTRIP FEED)

38. RECTANGULAR RING MICROSTRIP FEED ANTENNA (10GHz)

39. Return loss & Radiation Pattern
BW=500MHz

40. RECTANGULAR U-SHAPED MICROSTRIP FEED ANTENNA (10GHz)

41. Return loss & Radiation Pattern
BW=750MHz

42. RECTANGULAR H-SHAPED MICROSTRIP FEED ANTENNA (10GHz)

43. Return loss & Radiation Pattern
BW=1GHz

44. RECTANGULAR PATCH WITH CIRCULAR CUTOUT (10GHz)

45. Return loss & Radiation Pattern
BW=1GHz

46. COMPARISION: MICROSTRIP FEED
PARAMETERS
RECTANGULAR SHAPED PATCH
H SHAPED PATCH
RECTANGLE WITH CIRCULAR CUTOUT
OPERATING
FREQUENCY
10.2GHz
10.75GHz
BANDWIDTH
500MHz
1GHz
RADIATION
PATTERN
Good
PARAMETERS
RECTANGULAR SHAPED PATCH
RECTANGULAR
RING PATCH
U SHAPED PATCH
OPERATING
FREQUENCY
10.2GHz
10.25GHz
10.9GHz
BANDWIDTH
500MHz
750MHz
RADIATION
PATTERN
Good

47. CPA WITH MS FEED(14.5GHz)

48. Return loss & Radiation Pattern
BW=3GHz

49. CPAWITH DIFFERENT SHAPES (MICROSTRIP FEED)

50. H SHAPED(14.5GHz)

51. Return loss & Radiation Pattern
BW=>13GHz

52. H SHAPED(14.5GHz)

53. Return loss & Radiation Pattern
BW=>3GHz

54. U SHAPED

55. Return loss & Radiation Pattern
BW=1.2GHz

56. CIRCULAR RING SHAPED

57. Return loss & Radiation Pattern
BW=> 3GHz

58. CIRCULAR SLOT

59. Return loss & Radiation Pattern
BW=2.5GHz

60. COMPARISION: PARAMETERS CIRCULAR PATCH (14.5GHz) H SHAPED 1 H SHAPED 2
CIRCULAR PATCH (14.5GHz)
H SHAPED 1
H SHAPED 2
U SHAPED
RING SHAPED
CIRCULAR
SLOT
PATCH
OPERATING
FREQUENCY
14.5GHz
41GHz
17.75GHz
19.5GHz
18.25GHz
18.5GHz
BANDWIDTH
3GHz
> 13GHz
>3GHz
1.2GHz
2.5GHz
RADIATION PATTERN
GOOD
SOMEHOW GOOD

61. SIMULATION AND RESULTS(3)

62. : MATCHING OF RPA (8GHZ)

63. Return loss & Radiation Pattern
BW=1.4GHz

64. MATCHING OF RPA (5.5GHZ)

65. Return loss & Radiation Pattern
BW=700MHz

66. MATCHING OF RPA (10GHZ)

67. Return loss & Radiation Pattern
BW=700MHz

68. MATCHING OF RPA (11GHZ)

69. Return loss & Radiation Pattern
BW=500MHz

70. MATCHING OF RPA (12GHZ)

71. Return loss & Radiation Pattern
BW=400MHz

72. MATCHING OF CPA (14.5GHZ)

73. Return loss & Radiation Pattern
BW=3GHz

74. Advantages Disadvantages Lightweight construction
Versatility of possible geometries
Low cost manufacturing
Simplicity of structure
Narrow bandwidth
Have low directivity / broad beam width
Low radiating power efficiency

75. Even though MPAs have a narrow bandwidth, it can be increased.
Increase the thickness of the board
Increase the width of the antenna

76. Real World Examples GPS Antennas Wireless LAN Missiles Rockets

77. Real World Examples cont…
Internal Integrated Microstrip Antenna
Interaction between antenna and human body is less than external antennas
Mechanically rigid and therefore does not break
Does not increase overall size
External Retractable Antenna
Internal Integrated Antenna

78. conclusion Use of MPA is increasing day by day.
Some future aspects are-:Multiband Antenna, array antenna, Application specific Antenna

79. References
Sanjeev Sharma, Bharat Bhusan, Shailender Gupta and Preet Kaur, Performance Comparison of Micro-strip Antennas with different shape of the patch, International Journal of u- and e- service, science and Technology Vol. 6, No. 3 June 2013.
Amit Kumar & Sanjay Singh, Designing and Analysis of T-shape Micro-strip Antenna for the 4G systems, Global Journal of computer science and Technology Network, Web & Security, Volume 13, Issue No. 8, version 1.0, 2013.
K.v.rop, D.b.o konditi, Performance analysis of a rectangular Micro-strip patch antenna on different Dielectric substrates, innovative systems design and engineering, vol 3, no 8, 2012.
Amit Kumar Gupta, R K Prasad and D.K.Srivastava, Design and Analysis of Quad-Band Rectangular Microstrip Patch Antenna, IOSR Journal of Electronics and Communication Engineering (IOSRJECE), VOLUME 1, Issue no. 6 (July-Aug 2012), PP
R.Divya an M.Priya, Design and characterization of e-shape microstrip patch antenna for wireless communication, Ictact Journal on Communication Technology, March 2013, vol 4, issue 01.

80. References Cont.
Chailtali Ingale, Trupti Ingale, Anand Trikolikar, Study of different types of Microwave Antenna and its applications, International Journal of Computer Technology and Electronics Engineering(IJCTEE) vol 3, Special Issue, March-April 2013.
Md.Tanvir Ishtaique-ul-Huque, Md. Kamal Hosain, Md. Shihabul Islam and Md. Al-Amin Chowdhury, Design and Performance Analysis of Microstrip Array Antennas with Optimum Parameters for X-band Applications(IJACSA) International Journal of Advanced Computer Science and Applications, vol. 2, no. 4, 2011.
Atinder Pal Singh, Ravinder Kumar and Hartej Singh Dadhwal, Design of Edge Fed Rectangular Microstrip Patch Antenna for WLAN Applications Using Ansoft-HFSS,VSRD-IJEECE,Vol.2(4), 2012,

81. References cont.
M.Gujral, J L-W. Li, T yuan and C-W.Qui, Bandwidth, Improvement of Micro-strip Antenna Array using Dummy Ebg Pattern on feed line, Progress in Electromagnetics Research, vol. 127, 79-92, 2012.
O.M.H.Ahmed and A.R.Sebak, size reduction and bandwidth enhancement of a UWB Hybrid Dielectric Resonator Antenna for short-range wireless communications, progress in Electromagnetics Research Letters, vol. 19, 19-30, 2010.
Constatine A. Balanis, “Antenna Theory – Analysis and Design”, John Wiley & Sons. Inc

82. THANK YOU

83. By Gourav Misra ( ) Nelson kumar ( ) Surya Prakash Tripathy ( ) Lokesh Kumar Patra ( ) Guided By Mr. Shaktijeet Mahapatra