Microstrip Bandpass Filter for C Band applications

The bandpass filters (BPF) are electronic devices that pass required frequencies and rejects unwanted frequencies. At microwave region i.e 300 MHz ? 30 GHz the conventional lumped filters do not give desired response. Thus at such high frequencies filters based on distributed elements are recommende

Project Title

Microstrip Bandpass Filter for C Band applications

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

The bandpass filters (BPF) are electronic devices that pass required frequencies and rejects unwanted frequencies. At microwave region i.e 300 MHz – 30 GHz the conventional lumped filters do not give desired response. Thus at such high frequencies filters based on distributed elements are recommended. This project will focus on microstrip bandpass filters for C-band applications. The two center frequencies are chosen i.e. 4.3 GHz and 5 GHz respectively.

The design of chebyshev and butterworth filters will be briefly studied to achieve lumped circuit model for both filter configurations. The lumped circuit model will be verified by circuit simulator such as Keysight Advanced Design System (ADS). Next the distributed designs for bandpass filters will be investigated. The substrate is selected to be Roger 4003 having dielectric constant of 3.55 and thickness of 0.508 mm. The lumped design will be verified and optimized utilizing ANSYS High Frequency Structure Simulator (HFSS). Upon achieving the required response, the filters based on Butterworth and Chebyshev techniques will be manufactured utilizing the LPKF PCB  protomat machine. The developed prototypes of filters will be tested utilizing Network Analyzer. Finally, the comparison between simulation  and measured results will be presented and published in a research  paper.  

Project Objectives

The objectives of proposed projects are summarized as following.

1. To understand simulation setup and gain hands of experience on Keysight Advanced Design System (ADS) software.
2. To understand simulation setup and gain hands of experience on ANSYS High Frequency Structure Simulator (HFSS) software.
3. Design of Chebyshev Bandpass filter.
4. Design of Butterworth Bandpass filter.
5. Lumped circuit design verification utilizing ADS.
6. Microstrip bandpass filter design verification utilizing HFSS.
7. Manufacturing and testing of microstrip filter prototypes.
8. Research paper publication.

Project Implementation Method

The project implementation method is summarized as following.

1. The lumped circuit based on Chebyshev Filter model will be verified utilizing the ADS software.
2. The lumped circuit based on butterworth Filter model will be verified utilizing the ADS software.
3. The distributed (microstrip) models for both chebyshev and butterworth designs will be verified utilizing the HFSS software. 
4. The microstrip bandpass filter structures will be optimized utilizing ANSYS HFSS to achieve improved results.
5. Both chebyshve and butterworth filters will be implemented on Rogger 4003 substrate utilizing LPKF PCB protomat machine.
6. The developed microstrip filter prototypes will be tested and a comparison between the filter results will be given.

Benefits of the Project

The developed porotypes can be utilized in telecommunication, military, radars and space applications operating in C-band.

Technical Details of Final Deliverable

The final deliverable are following.

1. Prototype of microstrip bandpass filter based on butterworth design centered at 5 GHz.
2. Prototype of microstrip bandpass filter based on Chebyshev design centered at 4.3 GHz.
3. Measured Results of prototype microstrip filters.
4. Complete Report.

The above mentioned four filters will be implemented on Roger 4003 substrate having dielectric constant of 3.55 and thickness of 0.508mm.

Final Deliverable of the Project

Hardware System

Core Industry

Telecommunication

Other Industries

Others , Security

Core Technology

Internet of Things (IoT)

Other Technologies

Others

Sustainable Development Goals

Industry, Innovation and Infrastructure

Required Resources

If you need this project, please contact me on contact@adikhanofficial.com