Custom patch antenna design
Frequency-specific design for size, gain, bandwidth, and polarization targets.
RF designs and prototypes
Austral Microwaves builds compact microwave rf designs for custom integration, lab evaluation, and engineering prototype work. Our works include circular and linealy polarized patch antennas, phase shifters and phased-array development hardware.
- Characterized engineering prototypes
- Custom antenna adaptation for enclosure constraints
- Full RF solutions
Services
Custom antenna engineering where packaging and integration matter.
Antenna and Far-field characterization
S11, radiation pattern, gain, and axial-ratio report-ready plots for engineering review.
Semianechoic chamber.
Phased-array prototyping
Development support for array architecture, feed concepts, and beamforming demos.
CubeSat and SDR consulting
Reference design selection, trade studies, and technical guidance for early programs.
Our Team
Alessandro Ghezzo
RF and Digital Engineering Consultant
Experienced in antennas, switched-line phase shifters, phased arrays, and SoC-based digital systems for applied RF development.
ANSYS HFSS, CST Studio, Keysight ADS
Designs
Measured and simulation-backed antenna hardware for evaluation and integration.
X-band
8.425 GHz RHCP Patch
Compact circularly polarized reference hardware for TT&C, CubeSat, and lab work.
- Characterized matching and axial ratio
- Reference PCB with SMA connector
- Prototype and documentation package
S-band
2x2 Phased Array
High-value development hardware for beamforming demos, research, and control experiments.
- Array architecture summary
- Biasing and calibration notes
- Beam steering prototype workflow
S-band
Phase Shifter
- Switched Line Topology
- Series PIN Diode Based
- 4-Bit Design
- I2C Embedded Control
S-band
2.25 GHz RHCP Patch
Reference board for telemetry and university programs needing a credible starting point.
- Polarization and pattern documentation
- Prototype-ready stackup
- Measured or simulated far-field data
Available as prototype hardware, technical documentation, and starting points for custom RF programs.
Featured Antenna
8.425 GHz X-band RHCP patch for circularly polarized microwave links.
Circularly polarized X-band reference hardware for engineering evaluation, bench characterization, and integration studies around the 8.425 GHz target.
A characterized X-band circularly polarized patch intended as engineering reference hardware for CubeSat, TT&C, and microwave integration work, with simulation, measurement, and prototype fabrication data aligned around the 8.425 GHz band.
< 3dB Axial Ratio 200 MHz
- RHCP performance centered on the target band
- Measured and simulated matching results for comparison
- Fabricated panel and connector-side hardware imagery
Simulation vs Measurement
| Parameter | Simulation | Measurement |
|---|---|---|
| Center frequency | 8.425 GHz | 8.4 GHz |
| S11 | -22 dB | -12 dB |
| Matching bandwidth (S11 < -10 dB BW) |
920 MHz | 800 ± 30 MHz |
| Broadside gain | 7.06 dBi | 6.5 dBi |
Simulated Parameters
| Parameter | Simulated value |
|---|---|
| Operating frequency | 8.425 GHz |
| Reflection coefficient at 8.425 GHz | -22.14 dB |
| -10 dB impedance bandwidth | 927.3 MHz |
| Minimum axial ratio at broadside | 0.55 dB |
| Frequency of minimum axial ratio | 8.43 GHz |
| 3 dB axial ratio bandwidth | 218.7 MHz |
| Broadside gain | 7.06 dB |
| Back-lobe attenuation | -12.32 dB |
| RHCP polarization ratio at broadside | 35.75 dB |
Featured Array
2.15 GHz S-band 2x2 phased array for steering experiments and beam-control evaluation.
Bias-controlled S-band array hardware for beamforming development, matching studies, and measured-versus-simulated radiation analysis around 2.15 GHz.
A 2x2 patch array reference design built for CubeSat phased-array prototyping, steering validation, and RF characterization. The supporting material covers front and rear hardware views, S11 behavior across phase states, bias-current sensitivity, and measured/simulated lobe comparisons.
CubeSat Format
- Radiator and feed/control layers shown through front and back PCB views
- S11 tracked across phase configurations and polarization-bias current
- Measured and simulated angle and gain comparisons for steering evaluation
Performance Summary
| Parameter | Measurement |
|---|---|
| Operating frequency | 2.15 GHz |
| Bandwidth | 20 MHz |
| S11 | -16.56 dB |
| Broadside Gain | 7.83 dBi |
| Phase resolution | 5° |
| HPBW | [28°-38°] |
| Scan range | ±40° |
Contact
Start the conversation. Quote is free.
Share the target frequency, bandwidth, polarization, size limits, and integration constraints to scope prototype hardware or custom design work.
Email a Design Request