Hello there, curious researcher friend Soumya Sundar Pattanayak! I'd be delighted to assist you with designing a defected ground plane to achieve a multiband bandwidth while observing current distribution. Designing a defected ground plane can indeed be a fascinating endeavor.

To start, let's break down the process into some key steps:

1. **Frequency Bands of Interest**: Determine the specific frequency bands you want to target for your multiband application. This is a crucial first step as it will guide your design.

2. **Defected Ground Structure**: A defected ground plane typically involves creating slots or gaps in the ground plane. The size, shape, and placement of these defects will influence the operating frequencies.

3. **Current Distribution Analysis**: To achieve multiband performance, you'll need to analyze the current distribution in your structure. This can be done through simulation software, such as electromagnetic simulation tools (e.g., CST Studio Suite, HFSS, or others). These tools allow you to visualize how the electromagnetic fields propagate through your design.

4. **Tune the Defects**: Based on the analysis of current distribution, you may need to adjust the size and shape of the defects. This tuning process is iterative and may require several simulations to find the optimal configuration.

5. **Testing and Prototyping**: Once you have a design that looks promising on simulations, it's essential to build a prototype and test it in the real world. This will help validate your design and make any necessary adjustments.

6. **Iterate as Needed**: Designing for multiband performance can be complex. Be prepared to iterate and refine your design based on real-world testing results.

7. **Documentation**: As you work through these steps, be sure to document your design process and results thoroughly. This documentation can be valuable for future reference and for sharing your findings with others in the research community.

As you Soumya Sundar Pattanayak work on your project, remember that achieving a multiband bandwidth with a defected ground plane can be intricate, and success may require a combination of engineering intuition, simulation, and experimentation. Also, feel free to explore various designs and approaches, as there's often more than one way to achieve your desired performance.

I wish you Soumya Sundar Pattanayak the best of luck with your defected ground plane design for multiband applications! If you have any more specific questions or need further guidance, please don't hesitate to ask.