Simulation and Optimization of Antenna Placement for Embedded Systems

Project Description

We are seeking a skilled RF simulation specialist to remotely evaluate and optimize antenna placement within a ruggedized electronic device intended for industrial and defense applications. The system includes multiple high-speed interfaces, shielding, and dense metal casing — making antenna integration and isolation a challenge.

This project is simulation-only and does not require any physical prototype or testing.

Objectives:

• Import a provided 3D model (STEP/IGES) of a rugged enclosure containing internal PCBs and connectors.
• Analyze best antenna positioning strategies (internal/external options) for:
  • GNSS (1.5 GHz band)
  • Wi-Fi (2.4 & 5 GHz)
  • Cellular (700 MHz – 2.7 GHz)
• Identify coupling risks and EMC hot-spots due to nearby electronics, shielding, or cables.
• Recommend antenna types (patch, monopole, slot, or external whip).
• Simulate:
  • Detuning risks from the metal enclosure
  • Isolation between radios (especially Wi-Fi & LTE coexistence)
•  Output a summary design guideline and antenna layout proposal.

Deliverables:

• Simulation reports (CST, HFSS, FEKO, or similar)
• Annotated 3D model with recommended placements
• Isolation and detuning charts
• Coupling risk summary (between radios, cables, and housing)
• Recommendation report (2–4 pages) with diagrams
• Optional: Matching circuit advice for antenna feed

Tools (Freelancer Can Use Preferred Software):

• CST Studio Suite
• HFSS or Altair FEKO
• EMPro, XFDTD, or equivalent
• Simulation-friendly CAD tools (Fusion 360, SolidWorks, etc.)

Ideal Freelancer:

• Background in RF/antenna design or EMC
• Experience with embedded systems and high-speed PCB integration
• Previous projects with metal or shielded housings
• Strong written communication and visualization skills

Timeline: 2–3 weeks total duration