Design and Optimization of a Compact Dual-Band Antenna for IoT Devices

Project Description

We are looking for a freelancer to design and optimize a compact antenna structure suitable for low-power IoT devices operating in two frequency bands:

• 2.4 GHz (Wi-Fi/BLE)
• 868 MHz (ISM, LoRa, Sub-GHz)

The freelancer will deliver a documented, optimized antenna design along with radiation patterns, S-parameters, and a short report explaining the design process and performance metrics.

🎯 Objectives:

1. Design a compact dual-band antenna with dimensions suitable for embedded IoT devices (e.g., < 40 × 40 mm area)
2. Target frequency bands: 868 MHz ± 10 MHz, 2.4 GHz ± 50 MHz
3. Perform full-wave simulations: S11 vs frequency, 2D radiation patterns for both bands, Optional: efficiency and gain data
4. Optimize design for PCB-based integration
5. Document the antenna with: Geometry screenshots, Performance graphs, Design explanation

📦 Deliverables:

• Simulation files (e.g., CST, HFSS, or similar)
• STL or DXF/GERBER of antenna layout (if applicable)
• 2D/3D radiation plots and S-parameter graphs
• PDF design report (3–5 pages) with:
  • Objective summary
  • Frequency tuning notes
  • Performance results and limitations

🛠 Preferred Tools:

• CST Microwave Studio (preferred)
• ANSYS HFSS
• Altair FEKO
• Optional: MATLAB/Python for post-processing plots

🕒 Timeline:
Estimated Duration: 2–3 weeks
No check-ins required; only final delivery matters

📥 How to Apply:
Please submit:

Examples of prior antenna simulations
The simulation software you plan to use