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CST Studio Suite Electromagnetic Projects

Selected RF, microwave and terahertz simulation projects developed in CST Studio Suite, including antennas, metamaterials, absorbers, field plots, S-parameter validation and impedance matching workflows.

CSSR Patch Antenna

Microstrip Patch + CSSR

Patch antenna geometry, CSSR feed network, far-field and return-loss comparison.

THz Bow-Tie Antenna

Photoconductive THz Antenna

Bow-tie geometry, CST parameterisation and S-parameter sweeps.

VO₂ THz Absorber

VO₂ Broadband Absorber

Spiral resonator geometry, absorbance curve and CST field maps.

Triple-Band THz Cell

Triple-Band Resonator

Unit-cell geometry, absorber peaks, 3D array and far-field visualization.

Square SRR THz

Square SRR THz Sensor

Layered SRR geometry, field maps and multi-parameter S11 plots.

Dual-Band Absorber

Dual-Band THz Absorber

Absorber unit cell, CST model and dual resonance curves.

Impedance Matching

Smith Chart Matching

L-section network, Smith chart, CST schematic and low-S11 validation.

C367 Final Project Report

CSSR-Loaded Microstrip Patch Antenna Bandwidth and Return-Loss Enhancement

A CST Studio Suite project investigating how complementary split-spiral resonator loading changes a microstrip patch antenna response, including feed design, radiation pattern, S11 and VSWR behaviour.

Step 01

Conventional Patch Geometry

The baseline rectangular microstrip patch was created with substrate, ground plane and feed dimensions before introducing CSSR loading.

Step 02

CSSR Feed-Network Integration

The complementary split-spiral resonator was added to study additional resonant behaviour and improve the antenna bandwidth response.

Step 03

Radiation Pattern Evaluation

CST far-field results were used to inspect the radiation pattern and gain of the antenna after modelling and excitation.

Step 04

Return-Loss and VSWR Results

The final frequency-domain plots compare the S11 return loss and matching behaviour of the CSSR-loaded antenna configuration.

Dissertation File (240937872)

Bow-Tie Photoconductive Antenna Terahertz Radiation Design

A CST-based bow-tie photoconductive antenna study for THz radiation, focusing on antenna gap, substrate dimensions, compact geometry and frequency response.

Step 01

Photoconductive Antenna Concept

The project starts from a photoconductive THz source concept where a laser-excited gap drives transient current between antenna electrodes.

Step 02

Bow-Tie Geometry and Dimensions

The bow-tie electrode layout was parameterised using gap, length, width and substrate dimensions to meet compact THz design requirements.

Step 03

CST Model Construction

The antenna, substrate and electrode geometry were built inside CST Studio Suite before solving the electromagnetic response.

Step 04

Parameter Sweep Response

S-parameter sweeps compared how antenna gap and geometry affect the resonant behaviour around the target THz band.

Dissertation Report (240860422)

Thermally Tunable VO₂ Metamaterial Absorber Broadband THz Absorption

A CST metamaterial absorber study using VO₂ switching behaviour to tune THz absorption, including unit-cell geometry, boundary conditions, field confinement and parameter sweeps.

Step 01

Metamaterial Unit Cell

A spiral metamaterial unit cell was modelled using conductive and substrate layers for THz absorber operation.

Step 02

Boundary Conditions in CST

Unit-cell boundary conditions were assigned to represent periodic excitation and wave propagation through the absorber structure.

Step 03

Reflectance and Absorbance

The simulated response produced broadband absorption behaviour, with reflectance and absorbance curves used to evaluate the design.

Step 04

Field Distribution and Sweeps

CST field plots and parametric studies show how geometry and VO₂ state affect confinement and tuning of the resonance bands.

Dissertation_Paper (240981624)

Triple-Band THz Metamaterial Array Multi-Resonance CST Simulation

A triple-band THz metamaterial design simulated in CST, combining unit-cell geometry, array construction, far-field behaviour and S-parameter resonance analysis.

Step 01

Unit-Cell Geometry

The resonator layout was defined with geometric parameters controlling the THz resonant bands.

Step 02

CST Array Construction

The unit cell was repeated into an array to represent the simulated metamaterial surface in CST.

Step 03

Absorbance Peaks

The simulated absorbance spectrum shows multiple resonant peaks, supporting the triple-band behaviour of the proposed structure.

Step 04

S-Parameter and Far-Field Results

S-parameter sweeps and 3D field/radiation plots were used to compare the electromagnetic performance of different unit-cell variants.

Dissertation_Paper_240861522

Square Split-Ring Resonator Metamaterial THz Sensor Structure

A CST Studio Suite square SRR metamaterial sensor project with parametric geometry, waveguide setup, electric field maps and S-parameter tuning.

Step 01

SRR Geometry Definition

The square split-ring resonator was parameterised with ring lengths, gap dimensions and layered substrate arrangement.

Step 02

Array and Simulation Setup

The unit-cell geometry was prepared in CST with array-style placement, excitation and boundary settings.

Step 03

Electric Field Distribution

Field maps identify the areas where the THz electric field concentrates around the ring gaps and resonator edges.

Step 04

S-Parameter Tuning

Parametric S-parameter plots compare the influence of geometry changes on the resonance position and depth.

Dissertation_Paper_240867890

Dual-Band THz Metamaterial Absorber Compact Resonant Absorption

A CST dual-band THz absorber project examining gold/polyimide geometry, simulated absorbance, S-parameter minima and geometric parameter effects.

Step 01

Absorber Unit-Cell Layout

The dual-band absorber geometry was built with gold resonant features over a dielectric substrate.

Step 02

CST 3D Model

The model was implemented in CST with layered geometry and electromagnetic excitation to evaluate THz behaviour.

Step 03

Dual Resonance Response

Absorbance and reflection plots show two strong resonance bands across the simulated THz frequency range.

Step 04

Parametric S-Parameter Sweeps

Several parameter sweeps were performed to track the shift and depth of the absorber resonances under geometry changes.

Impedance Matching Report (240937872)

L-Section Impedance Matching in CST Smith Chart and S11 Validation

A CST impedance-matching study comparing theoretical L-section design with Smith-chart tuning and CST S11 verification at the selected GHz operating frequency.

Step 01

Smith Chart Calculation

The load impedance was normalised and located on the Smith chart to guide the matching-network design.

Step 02

L-Section Matching Network

A series and shunt reactive network was used to transform the load impedance toward the target line impedance.

Step 03

CST Circuit Simulation

The calculated L-section was recreated in CST to validate the matching behaviour using circuit simulation.

Step 04

S11 and Smith Plot Validation

The simulated S11 minimum and Smith plot confirm the matching network performance close to the design frequency.