Antenna Library/Direction Finding/Cavity-Backed Archimedean Spiral Antenna
CAD Geometry • SPIRALSTEP / SolidWorks AP214
3D CAD•3D CAD SOLVER MODEL
Archimedean Dual-Arm Feed
±0.001 mm CAD

Computational Verification

Primary SolverAnsys HFSS
Numerical MethodFEM
Validation StatusMeasurement-correlated
Mesh Cell Count15.6 Million
Simulation Runtime4.2 Hours

Package Deliverables

  • Touchstone .s2p
  • Axial ratio frequency curves
  • CAD STEP
  • HFSS .aedt workspace
Bilateral NDA Standard & Air-Gapped Compute

Custom installed studies and platform integrations are executed on dedicated on-premise compute nodes under bilateral mutual non-disclosure agreements.

Direction FindingMeasurement-correlated

Cavity-Backed Archimedean Spiral Antenna

400 MHz to 8 GHz cavity-backed Archimedean spiral. Utilizes graded carbon absorber cavity backing to eliminate back-radiation reflections across multi-octave bandwidth.

Calibrated Solver Results

Band: 400 MHz – 8 GHz

Detailed S-parameter sweep & 3D polar matrix available upon request package generation.

Antenna Specifications

Operating Band
400 MHz – 8 GHz
Antenna Geometry
Planar two-arm Archimedean spiral with absorbing cavity
Peak Realized Gain
8.2 dBi
Max VSWR
2:1
Radiation Efficiency
78%
Polarisation
RHCP
Target Platforms
Airborne, Tactical, UAV/Drone
Mesh Model
15.6M cells

License Model or Request Custom Platform Study

Add this antenna model to your request basket to license the validated simulation archive, re-simulate with custom material parameters, or order a vehicle/mast installed-performance study.