A Stacked Patch Antenna with Broadband Circular Polarization and Flat Gains.pptx

This slide presents a stacked patch antenna designed to achieve broadband circular polarization and flat gains. The antenna integrates a square ring, double-layer stacked patches, and vertical patches on the ground plane. The stacked patches enhance impedance matching and generate an additional CP mode, while the vertical patches broaden the axial-ratio (AR) bandwidth. The design incorporates a corner truncated loop as a sequential phase feeding structure for four driven patches. Results demonstrate a measured impedance bandwidth of 43.2%, a 3-dB AR bandwidth of 26.5%, and a 1-dB gain bandwidth of 32.6%. The antenna offers advantages in terms of wide bandwidth, compact size, and flat gain compared to other similar CP stacked patch antennas.

1. Project Presentation Slide 1 of 16 A Stacked Patch Antenna with Broadband Circular Polarization and Flat Gains Presenter: Tazrian Noor ID: 2020691 Partho Prosad ID: 2022371 Md Hasibul Hossain ID: 2021053 Course: Communication II, Course ID: ETE322, Section: 01 Department of Electrical & Electronic Engineering Independent University, Bangladesh Ananya Pramanik ID: 1910213

2. Acknowledgement Slide 2 of 16 A Stacked Patch Antenna With Broadband Circular Polarization and Flat Gains Authors: KANG DING 1 , YANJIE WU 1 , KUN-HUA WEN 1 , DUO-LONG WU 1, 2, (Member, IEEE), AND JIAN-FENG LI 1, 2 IEEEAccess

3. Outline Slide 3 of 16 Introduction Methodology Patch Antenna Antenna structure Simulation Results Applications Conclusion

4. Introduction Slide 4 of 16 ANTENNA VS PATCH ANTENNA An Antenna is a device that is used to transmit or receive electromagnetic signals. Antennas are typically designed to operate over a specific frequency range. A Stacked patch antenna is made up of multiple layers of patches that are stacked on top of one another. Why m ultiple layers of patches?

5. Intro (Cont.) Slide 5 of 16 Circular polarization refers to the rotation of the electric field of the radio wave as it propagates through space. Flat gains refer to the ability of the antenna to maintain a consistent level of gain over a wide range of frequencies. In addition, four vertical patches on the ground plane of the antenna was designed in order to broaden the circular polarization bandwidth (CP). The proposed antenna design has been simulated using CST Microwave Studio.

6. Methodology Slide 6 of 16 Compare Design with Reference Antenna Design and Simulate using CST Studio Literature Review Analyze Results

7. Antenna Structure Slide 7 of 16 Figure: Schematic design of antenna in CST Figure: 3-Dimensional View

8. ANTENNA STRUCTURE Slide 8 of 16 Top view Bottom layer Side view Figure: Proposed antenna from different angles

9. Simulation results Slide 9 of 16 Figure: S-Parameter of our design Figure: S-Parameter from reference paper

10. Simulation Results Slide 10 of 16 Here, the efficiency has a maximum value of -0.25 dB at 5GHz frequency. Figure: Efficiency in dB

11. Simulation Results Slide 11 of 16 Figure: Electric field

12. Simulation Results Slide 12 of 16 Figure: Magnetic field

13. Simulation Results Slide 13 of 16 Figure: Far field when Phi=0 Figure: Far field when Phi=90 Figure: 3D plot of far field at 5GHz

14. Applications Slide 14 of 16 Numerous uses for stacked patch antenna exist in wireless communication. For instance, circularly polarized radiation patterns are needed for satellite communication and may be achieved using either a square patch microstrip antenna or a circular patch microstrip antenna. Circularly polarized microstrip antennas are employed in global positioning satellite (GPS) systems. Due of their placement, they are highly pricey and quite small in size. Mobile communication, RFID (radio frequency identification). Treatment of malignant tumors using a patch radiator.

15. Conclusion Slide 15 of 16 We have demonstrated a stacked patch antenna that offers flat gains and a wide bandwidth. In order to increase the CP bandwidth, we have also included four ground plane-based vertical patches. A flat gain could not be achieved within the operating frequency for the suggested antenna created in CST Microwave Studio.

16. Slide 16 of 16 End of Presentation