# Search results

1. ### Extracting the effective parameters of multilayer dielectric using Nicolson Ross Weir

Hi, If i have multilayer of unknown materials stacked, how can i calculate the effective permittivity and permeability of entire slab using Nicolson Ross Weir (NRW) algorithm? Assume wave is propagating perpendicular to the multilayer surface, and S parameter is calculated using measurement...
2. ### CST Microwave Studio uses which time harmonic function (e^-jwt OR e^+jwt)?

This question arise while extracting the metamaterial property from the CST S parameter result. Depending on the time factor (e^-jwt OR e^+jwt), the S parameters will be time reversed. Please clarify which convention CST adopts.
3. ### Plane of Incidence for the wave transmitted with Horn Antenna.

Q1: Suppose Horn Antenna is used to transmit wave toward a target equipment under test (EUT), then what is the plane of incidence. Since with reference to the Incidence plane, TE and TM is defined. Plane of Incidence is a plane perpendicular to the EUT surface which also contain the incidence...
4. ### Why Resonance Frequency of Frequency Selective Surface Change with Incidence Angle

For a given dimension of element (patch or aperture type) in Frequency of Frequency Selective (FSS), the resonance frequency (Fr) change with Incidence Angle and polarization. (Example: Let us take a dipole cross type aperture array. The length of dipole is 1 centimeter. Fr is 15 GHz for...
5. ### Polarization Angle in Frequency Selective Surface simulation at CST MW Studio.

I am using CST Microwave Studio for Frequency Selective Surface (FSS) design. In the unit cell simulation setup i can change only the incidence angle. The solver generates output only for TE and TM polarization. [Q1]But how could i simulate for polarization angles other than 0 or 90 Degree...
6. ### How S Matrix is converted to Z Matrix in CST MW Studio

In CST MW Studio how Z-Matrix is calculated using an S Parameter calculation option. Please explain how its calculated. I have tried to calculate Z matrix from S parameter using formulas available in Microwave Engg-Pozer book. But i could not get correct result.
7. ### Equivalent Circuit Extration from CST Microwave Studio

Theres a option called "Network parameter extraction " available in CST Microwave Studio to generate the netlist. I want to find the equivalent circuit for a Electromagnetic Structure (enclosure box). Can anybody help me to find the "Equivalent Circuit" for the EM structure using CST. Thanks.
8. ### Frequency Selective Surface for EM Shielding

Hi, I am interested in Frequency Selective Surface (FSS) for EM Shielding applications. FSS is best suitable for enclosures of small size (< 50cm ), which i have designed and tested. But when tried FSS for enclosures of big size enclosure resonance dominates and FSS become useless. Can anybody...
9. ### Frequency Selective Surface Design

Hai, I am interested in FSS and very new to it . I could able to simulate pre designed FSS with CST software . Please tell me how the unit cell the designed and its dimensions decided. Ex: What should be the dimensions of the unit cell fss (of jerusalem cross shape) which have the passband at...
10. ### How FSS Unit Cell is Designed

Hai, I am interested in FSS and very new to it . I could able to simulate pre designed FSS with CST software . Please tell me how the unit cell the designed and its dimensions decided. Ex: What should be the dimensions of the unit cell fss (of jerusalem cross shape) which have the passband...