Research question and engineering context
Study a shared-aperture dual-band antenna combining a 2×2 substrate-integrated-waveguide array and an S-band dipole, with attention to port isolation and beam-steering performance.
Establish whether both radiator functions can coexist within one aperture while maintaining impedance match, isolation and intended pattern control.
Model construction sequence
- 1. Model the SIW via rows, cavity or guided-wave launch and 2×2 radiating-element geometry using the actual substrate stack.
- 2. Place the S-band dipole and feed with its grounding, clearance and mechanical constraints specified.
- 3. Use separate excitation ports and an adequately sized radiation boundary or PML.
- 4. Sweep progressive phase states for the array and retain a consistent reference coordinate system for all far-field results.
What should be visible in the results
- Output 1: S11/S22 matching and cross-port coupling across each operating band. Record units, labels, stimulus conditions and analysis time window.
- Output 2: Co- and cross-polarization patterns for the SIW and dipole modes. Record units, labels, stimulus conditions and analysis time window.
- Output 3: Realized gain, radiation efficiency and steering angle versus phase progression. Record units, labels, stimulus conditions and analysis time window.
- Output 4: Scan loss, sidelobe levels and isolation sensitivity to shared-aperture geometry. Record units, labels, stimulus conditions and analysis time window.
How to read the evidence
Strong dual-band return loss does not by itself establish good antenna coexistence; compare isolation, efficiency, beam steering and pattern distortion in both bands.
Distinguish the material demonstrated in the source video from additional plots proposed here. Without the original numerical result files, the headings in this guide are a validation plan rather than evidence of achieved performance.
Reproducibility record
- Checkpoint 1: Verify SIW via pitch, diameter and substrate permittivity against the intended guide band.
- Checkpoint 2: Keep mesh and far-field normalization consistent between phase states.
- Checkpoint 3: Distinguish port excitation phase from the actual radiated main-beam direction.
Engineering use and next steps
For a defensible engineering report, provide schematic or geometry images, software version, unit-checked parameter tables, imposed inputs, solver configuration and the raw graph exports.
Compare the video demonstration with the original project files before describing a particular waveform or efficiency as experimentally verified.
Related project watch pages
Watch the relevant simulation output first, then use this article as a technical review or experimental planning guide.
Engineering research support
For the underlying MATLAB/Simulink, COMSOL, ANSYS HFSS or power electronics model, verification of solver settings, and documented outputs, contact the MATLAB Projects Code research team. Articles describe engineering validation approaches and are not a substitute for measured validation data.
Contents are for representative purposes; actual content may vary.