Circuit Analog STACK (CASTACK)
Overview
CASTACK (Circuit Analog STACK) is a computer code that calculates various electrical properties of a material composed of layers, each of which may contain a regular pattern of arbitrarily shaped circuit elements. Transmission and reflection coefficients are calculated for the material stack, as well as input impedance, normal layer admittance and layer impedance.
Applications
The CASTACK code is widely used for 1D RF prediction of material design and integration.
Benefits
In the CASTACK code, the scattered fields are obtained by determining the currents induced in the material stack by an incident excitation field.
Product Features
- Periodic structures
- Bandwidth optimization
- Sensor integration
- Frequency and angle filters
- Tent Basis Expansion
- Rigorous computation of inter- and intra-layer coupling
- Arbitrary element shape
- Arbitrary impedance
- Arbitrary number of periodic layers and interstitial dielectrics
- Layer characterization
- Anisotropic frequency-dependent shunt impedance associated with each periodic layer - used for termination computations
- Connectivity between elements of the periodic structures using complex impedance materials









