Selected projects

Recent engineering deliverables across RF, power electronics, control, and accelerator instrumentation. Each spans physics-level analysis, simulation, and fabrication-ready design.

Multi-hole directional coupler — X-band

Sidewall multi-hole directional coupler in WR-90 waveguide. Seven-hole Chebyshev-tapered array synthesised using Bethe small-hole coupling theory. 20 dB nominal coupling, directivity better than 25 dB, return loss below −20 dB across 8.2–12.4 GHz. Fabrication-ready 3D CAD with predicted S-parameters.

BPTX-class beam position pickup

Button-electrode beam position monitor with bipolar-pulse signal chain, modelled on the ATLAS LHC BPTX heritage architecture. Front-end conditioning, hybrid balun for differential extraction, and trigger generation for charged-particle beam diagnostics. Applicable to storage rings, cyclotron transfer lines, and beam-test facilities.

SSPA protection and sequencer

Protection and interlock subsystem for solid-state power amplifier chains. VSWR, overcurrent, and overtemperature monitoring with first-fault latching, drive disable, and operator-facing fault indication. KiCad schematic with screened PCB layout. Designed for 50–500 W radar and communications PA modules.

ISA 18.2 alarm annunciator

32-channel alarm annunciator with first-out indication, acknowledge and silence logic, and audible/visual annunciation. ISA 18.2 compliant. Designed for process-plant control rooms, accelerator-facility operator stations, and safety-critical industrial environments.

Disciplines and standards

RF and microwave — filters, couplers, antennas, waveguide components, signal chains, and front-end conditioning. Power electronics — amplifier modules, protection circuits, sequencers, and HV subsystems. Control systems — alarm management, instrumentation, and operator interfaces to ISA 18.2. PCB design — RF, mixed-signal, and power layouts in KiCad, schematic through Gerber-ready output.

Engineering disciplines

Standards and methods

ISA 18.2 alarm management. IPC-2221 PCB design rules. Bethe small-hole coupling theory and Chebyshev synthesis for waveguide components. Controlled-impedance microstrip routing for RF PCBs. Beam-physics first principles for accelerator instrumentation. Each delivery comes with the calculation, simulation, and measurement chain documented end-to-end.