Device Topology & Electromagnetic Behavior
Combines 4 or 6 interdigitated microstrip fingers linked by wirebonds or air bridges. Overcomes the physically impossible gap limitations of standard edge-coupled lines, achieving octave-bandwidth 3 dB coupling with low insertion loss. Widely deployed in GaN balanced power amplifiers.
Rogers RT/duroid® 6010.2LM (εr = 10.2) or thin 5 mil RT/duroid 5880 for tight coupling.
- Precision gold wirebonds (1 mil diameter) or gold air-bridges over fingers.
- Strict photolithography tolerance (line width/spacing down to 25 µm).
Design, 3D EM Simulation & Handoff for Lange Coupler (Interdigital 90°)
We provide turnkey synthesis, multi-frequency full-wave simulation, and fabrication-ready packaging for the Lange Coupler (Interdigital 90°).
1. 3D Full-Wave FEM Modeling
Complete Ansys HFSS 3D CAD modeling with true edge-launch SMA or SMP connectors, via fence stitching, and adaptive mesh refinement down to ΔS < 0.007.
2. Sensitivity & Tolerance Sweeps
Monte Carlo statistical analysis over copper etching tolerances (±15 µm) and substrate permittivity variations to guarantee first-pass high-yield manufacturing.
3. Manufacturing Handoff
Delivery of verified simulation models, parameterized layout geometries, and photolithography-compliant Gerber RS-274X fabrication packages.
More in Power Division & Combining
Wilkinson Power Divider
Equal-phase splitting with lossless transmission and high inter-port isolation.
Resistive Power Divider
Ultra-wideband DC-to-mmWave resistive splitter with zero frequency dispersion.
Branch-Line Coupler (90° Hybrid)
Four-port quadrature hybrid with equal 3 dB split and exact 90° phase offset.
Initiate Design & 3D EM Simulation Scope for Lange Coupler (Interdigital 90°)
Submit your operational frequency, bandwidth, power handling, and target substrate stackup. Our electromagnetic engineers will deliver a verified feasibility audit within 48 hours.
Initiate Project Scope & NDA
We treat client intellectual property with military-grade rigor. Prior to receiving proprietary disclosure files, patent drafts, or trade secret geometries, we execute standard bilateral NDAs.
Bilateral NDA Standard
Mutual non-disclosure executed before file transmission.
Isolated On-Prem Compute
Simulations run on dedicated air-gapped workstations.
Clean Room Protocol
Full audit trail for IP litigation and patent defense.