Reference Design ExampleBenchmark CAD baseline. Nikola RF delivers AAA Custom Full-Wave EM Simulation & Synthesis Services (Ansys HFSS / CST / Feko) to tune, co-design, and de-risk this geometry for your specific system requirements.
Request Custom Study →CAD Geometry • SPIRALSTEP / SolidWorks AP214
3D CAD•3D CAD SOLVER MODEL
±0.001 mm CAD
Computational Verification
Primary SolverAnsys HFSS
Numerical MethodFEM
Validation StatusMeasurement-correlated
Mesh Cell Count18.5 Million
Simulation Runtime4.8 Hours
Package Deliverables
- Touchstone .s1p
- Axial ratio vs theta curves
- CAD STEP
- HFSS project
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
Multi-Octave RHCP Cavity-Backed Spiral
Multi-octave 400 MHz to 8 GHz circular-polarized spiral antenna for radar warning receivers (RWR), ELINT, and broadband direction finding.
Calibrated Solver Results
Band: 400 MHz – 8 GHzReflection Coefficient |S₁₁| (dB)Port input return loss & resonance dips across simulated bandwidth
S₁₁ (dB)-10 dB (VSWR 2:1)
Minimum S₁₁: -19.2 dBPassband compliance: < -10 dB verified
Antenna Specifications
- Operating Band
- 400 MHz – 8 GHz
- Antenna Geometry
- Two-arm planar Archimedean spiral with graded absorber cavity
- Peak Realized Gain
- 8 dBi
- Max VSWR
- 2:1
- Radiation Efficiency
- 79%
- Polarisation
- RHCP
- Target Platforms
- Airborne, Tactical, UAV/Drone
- Mesh Model
- 18.5M 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.