Jim Yip

Characterise automotive radar ICs through RF measurement, data analysis and Python-based automation. Support CMOS radar validation across RF, analogue and digital domains, including measurement-framework development, debugging and performance evaluation.

Developing electronic systems that deliver high-fidelity RF signal for ion trapping and microwave signals for qubit operation. Introduced conceptual design proposals for a surface-trap chip, including a fabrication method for low-loss RF vertical transition and a novel 2D planar microwave structure for generating circularly polarised wave.

Conducted independent theoretical, simulation and patent-development work in nonlinear quantum devices, cryogenic microwave hardware and radar sensing.

Introduced and discussed conceptual proposals in RF and quantum hardware, including a QPU packaging concept using integrated vertical interconnects to suppress box modes and improve isolation, flex cables with integrated low-pass and infrared filtering, and a magnet-free drive-line isolator concept.

Worked with a passive load-pull system for GaN power-amplifier optimisation, resolving issues involving measurements under trapping conditions, burn-in, bias-oscillation, system calibration and instrument control. Supported RF design for a trapped-ion quantum processor and proposed a waveguide transition to delivering signals into a cryogenic chamber.

Designed a broadband 79 GHz directional coupler, power combiner and matched load using either an 0201 resistor or a thin-film resistor. Verified a CMOS radar chipset, including noise figure and SFDR measurements, with particular emphasis on LO-cancellation technique for multitone SFDR testing.

79 GHz radar design and development, including ultra-broadband antenna design, a novel antenna-array concept incorporating a new side-lobe suppression technique, on-wafer measurement and calibration, and direct material characterisation at mmWave frequencies. Introduced strategic R&D proposals concerning a radar chipset project on CMOS 28 nm technology node, CMOS AI-chip design, MEMS antenna conce

Completed a short-term assignment to troubleshoot and resolve problems in the ATE system developed many years ago.

77 GHz radar project: contributed to chirper design, including filter design and RF PCB layout in Altium, and studied and proposed broadband antenna-design topologies.

Designed 77 GHz radar and antenna components, including three-port and four-port 77 GHz rat-race couplers with >10 GHz bandwidth, a 77 GHz power combiner, a 77 GHz 50 Ω termination, and a novel 77 GHz patch antenna array. Contributed to V-band radio design for Ericsson's Mini-Link 6351, including waveguide-to-microstrip transitions and a 17 GHz edge-coupled band-pass filter.

Optimised a quasi-push-pull TWT high-power-amplifier module to reduce production cost and improve manufacturing yield and RF performance. Implemented a complex ATE measurement system using VBA, established impulse-response measurements for high-power pulse power amplifiers, and designed a microwave power module incorporating a broadband 20 GHz adaptive RF-domain lineariser.

Designed a broadband track-and-hold amplifier module, a 2-20 GHz 180° hybrid splitter with balanced group delay, and a broadband, low-cost gain equaliser with adjustable slope, attenuation and input/output matching. Achieved 20 GHz bandwidth in broadband power combiner using only four stages, and developed a calibration scheme to de-embed packaged devices and an ATE measurement system.

Recruited as one of the two original RF designers of the MMIC Solutions E-band transceiver to support Filtronic's continuation and industrialisation of the platform after MMIC Solutions ceased trading. Reconstructed critical design intent from prototype hardware and corrected implementation issues, supported the transition into production through RF measurement, diagnostics, debugging and yield an

Involved in design and verification of an Rx backplane for new MISO and MIMO platforms supporting LTE or GSM wireless communications. Developed automated measurement systems.

Involved in the design of a clock generator using an OCXO and PLL. Contributed to the design of a 5 GHz transceiver for CAPS, China's regional navigation satellite system.

Passive millimetre-wave imaging project: developed a mode-suppression technique for MMIC packaging, detector modules using high-gain LNA and zero-bias Schottky diode, and designed 35 dB-gain, 2.8 dB-noise-figure W-band GaAs LNAs. E-band transceiver-module project: contributed to two technologies that resulted in granted patents, developed isolation networks enabling Tx and Rx integration on a sing

Developed a fibre stretcher with extremely low polarisation distortion, based on a patent licensed from the University of Kent at Canterbury. Led business planning and marketing of the product.

Designed, fabricated and tested a broadband planar 13-to-1 combiner for the PHAROS (Phase Array Radio Observing System) project, which collaborated with the Jodrell Bank Observatory.

Worked on DTI-sponsored National Measurement Services Electromagnetic Programmes, including developing new national impedance standards for millimetre-wave frequencies using dielectric waveguides, implementing calibration schemes, performing CPW on-wafer measurement, designing and simulating MEMS devices, and measuring dielectric properties using hemispherical open resonator.

Collaborated with the University of Cambridge through an NPL project involving theoretical studies of propagation modes in dielectric waveguide and measurement of characteristic impedance using thin resistive films.

Performed passive Intermodulation (PIM) measurements for space applications in work supported by the European Space Agency (ESA).

Supported laboratory teaching in digital electronics and programming in HTML and Java.

Ph.D. in Microwave Engineering. Thesis on W-band waveguide packaging for multi-chip module technology, including field analysis and mathematical modelling of electromagnetic interactions.

M.Sc. in Radio Communications and High Frequencies Engineering. Thesis on ionospheric effects of radio wave paths in satellite communications, with MATLAB programming for ray tracing and numerical optimisation.

B.Eng. (Hons.) in Electronic and Electrical Engineering with majors in VLSI design and digital electronics.