Electrical and Electronic Engineering
p-ISSN: 2162-9455 e-ISSN: 2162-8459
2012; 2(2): 78-81
doi: 10.5923/j.eee.20120202.14
Arpita Sen , Neela Chattoraj
Electronics and Communication Engineering Department, Birla Institute of Technology, Mesra, Ranchi, 835215, India
Correspondence to: Arpita Sen , Electronics and Communication Engineering Department, Birla Institute of Technology, Mesra, Ranchi, 835215, India.
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Copyright © 2012 Scientific & Academic Publishing. All Rights Reserved.
The design of a microstrip patch antenna is reported which can be operated at GPS (Global Positioning System) and Bluetooth frequencies. Very small thin microstrip antenna is excited by a co-axial SMA connector to produce centre frequency of a Bluetooth system and then a thin parasitic microstrip patch is coupled with this patch to excite the centre frequency of GPS system. The simulated results using IE3D software are supported by measurement. Also, some effects of such antennas on fraud have been studied. Some of the frauds like Increase in Subscription Fraud, Unattended High Usage Fraud, Increase in Roaming Fraud have been described in this paper.
Keywords: Microstrip Patch Antenna, Dual Frequency, Compact, Multi-Frequency, Bluetooth, GPS
![]() | Figure 1. Dual-frequency microstrip antenna (all dimensions are in mm) |
![]() | Figure 2. Simulated radiation pattern of the antenna |
![]() | Figure 3. Simulated gain of the antenna |
![]() | Figure 4. Simulated and measured reflection coefficients of the antenna |
![]() | Figure 5. Variation of gain (Simulated) with the relative shift (along y-axis) of parasitic patch with respect to the driven patch |
![]() | Figure 6. Current Distribution at 1.575 GHz and 2.45 GHz |
![]() | Figure 7. VSWR of the antenna |
![]() | Figure 8. Antenna Design and Measurement |