# kareemmas3ud/microwave-rat-race-coupler architecture

> Architecture diagram of the GitHub repository kareemmas3ud/microwave-rat-race-coupler, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/kareemmas3ud/microwave-rat-race-coupler
- Repository: https://github.com/kareemmas3ud/microwave-rat-race-coupler

## Overview

This repository documents the engineering lifecycle of a 2.4 GHz microstrip Rat-Race coupler, rather than providing a software runtime. The documented workflow runs from theory and dimension correction through HFSS simulation, fabrication, and VNA validation. The README describes these stages, while the HFSS project and report files are the available design and record artifacts; source excerpts were not available to verify further implementation details.

Main entry points: [`HFSS File/Project.aedt`](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/HFSS%20File/Project.aedt) (HFSS Model), [`README.md`](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md) (S-Parameter Measurements), [`Report/Microwave Project Report.pdf`](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/Report/Microwave%20Project%20Report.pdf) (Project Report), [`Report/Microwave Project Report.docx`](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/Report/Microwave%20Project%20Report.docx) (Editable Report)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_design["Theory and Design"]
  node_theory["Coupler Theory<br/>[README.md]"]
  node_dimensions["Corrected Dimensions<br/>[README.md]"]
end

subgraph group_simulation["EM Simulation"]
  node_hfss_model["HFSS Model<br/>[Project.aedt]"]
  node_simulation_results["Simulation Results<br/>[README.md]"]
end

subgraph group_fabrication["Fabrication"]
  node_fabrication["Chemical Etching<br/>[README.md]"]
  node_prototype["FR4 Prototype<br/>[README.md]"]
end

subgraph group_validation["Testing and Results"]
  node_measurements["S-Parameter Measurements<br/>[README.md]"]
  node_loss_analysis["Noise and Loss Analysis<br/>[README.md]"]
  node_report["Project Report"]
  node_report_docx["Editable Report"]
end

node_engineers(("Project Engineers"))
node_hfss["ANSYS HFSS"]
node_vna["VNA"]

node_engineers -->|"develop"| node_theory
node_theory -->|"guides"| node_dimensions
node_dimensions -->|"configure"| node_hfss_model
node_hfss -->|"simulates"| node_hfss_model
node_hfss_model -->|"produces"| node_simulation_results
node_simulation_results -->|"document"| node_report
node_hfss_model -->|"provides layout"| node_fabrication
node_fabrication -->|"fabricates"| node_prototype
node_prototype -->|"is measured"| node_measurements
node_vna -->|"measures"| node_measurements
node_measurements -->|"informs"| node_loss_analysis
node_loss_analysis -->|"document"| node_report
node_report -->|"editable form"| node_report_docx

click node_theory "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_dimensions "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_hfss_model "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/HFSS%20File/Project.aedt"
click node_simulation_results "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_fabrication "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_prototype "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_measurements "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_loss_analysis "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md"
click node_report "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/Report/Microwave%20Project%20Report.pdf"
click node_report_docx "https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/Report/Microwave%20Project%20Report.docx"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_theory,node_dimensions toneBlue
class node_hfss_model,node_simulation_results toneAmber
class node_fabrication,node_prototype toneMint
class node_measurements,node_loss_analysis,node_report,node_report_docx toneRose
class node_engineers,node_hfss,node_vna toneIndigo
```

## Components

### Theory and Design

- [Coupler Theory](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`
- [Corrected Dimensions](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`

### EM Simulation

- [HFSS Model](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/HFSS%20File/Project.aedt): `HFSS File/Project.aedt`
- [Simulation Results](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`

### Fabrication

- [Chemical Etching](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`
- [FR4 Prototype](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`

### Testing and Results

- [S-Parameter Measurements](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`
- [Noise and Loss Analysis](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/README.md): `README.md`
- [Project Report](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/Report/Microwave%20Project%20Report.pdf): `Report/Microwave Project Report.pdf`
- [Editable Report](https://github.com/kareemmas3ud/microwave-rat-race-coupler/blob/main/Report/Microwave%20Project%20Report.docx): `Report/Microwave Project Report.docx`

### Other components

- **Project Engineers**
- **ANSYS HFSS**
- **VNA**

## Connections

- Project Engineers → Coupler Theory: develop
- Coupler Theory → Corrected Dimensions: guides
- Corrected Dimensions → HFSS Model: configure
- ANSYS HFSS → HFSS Model: simulates
- HFSS Model → Simulation Results: produces
- Simulation Results → Project Report: document
- HFSS Model → Chemical Etching: provides layout
- Chemical Etching → FR4 Prototype: fabricates
- FR4 Prototype → S-Parameter Measurements: is measured
- VNA → S-Parameter Measurements: measures
- S-Parameter Measurements → Noise and Loss Analysis: informs
- Noise and Loss Analysis → Project Report: document
- Project Report → Editable Report: editable form