- Product R&D at Epoch Microelectronics, a NY-based Radio Frequency Integrated Circuits (RFIC) company (fabless).
- Worked closely with customers to achieve prompt time-to-market, while developing feature-rich, low-cost and high-performance products.
Designed a wide range of mixed signal RFICs for telecommunications and state-of-the-art data converter systems, including:
- RF Modulators (passive and active).
- Fractional and integer PLLs.
- Wideband, low-noise LNAs.
- Low-noise bandgaps and regulators.
- LC and XTAL oscillators.
- ΣΔ modulators.
- FIR/IIR interpolation and decimation filters.
- Anti-aliasing filters for data converters.
- Continuous time, high linearity analog filters for base-band processing.
Worked with multiple telecommunication standards, including:
- Cellular: GSM (EDGE), CDMA, WCDMA, LTE, WIMAX
- Terrestrial and Cable Television: DVB, ATSC, ISDB
- Low-power standards: Bluetooth, Zigbee
System block diagram
Chip photo (1050µm x 750µm)
- Master's thesis under the supervision of Prof. Peter Kinget (Columbia University).
- Designed a contactless IC testing mechanism using inductive probing through custom devices.
- Simulated EM structures in software and designed a low-power and high-efficiency, on-chip RF power rectification system for 90nm process.
- Publication: J. Tompson, A. Dolin and P. Kinget, "2.6GHz RF Inductive Power Delivery for Contactless On-Wafer Characterization," IEEE International Conference on Microelectronic Test Structures, Edinburgh, 2008, pp. 175-179.
Measurement Setup (probe station)
Chip photo (2550µm x 2100µm)
- Academic research under the supervision of Prof. Peter Kinget (Columbia University).
- Investigated the matching of on-chip oscillators and compared statistics to theoretical estimates (from fabricated samples in UMC's 90nm CMOS process).
- Designed test structures for fabrication and automated testing of silicon wafers in software.
Chip A & B orientation
Close up: Spiral Inductor Communication Structures
- Undergraduate Honors thesis under the supervision of Prof. Gu-Yeon Wei (Harvard University).
- Designed a novel transformer-based communication system for high-speed digital systems.
- Research involved microwave device modeling of custom inductor devices as well as circuit and VHDL simulations of the inductive communication architecture.
- Thesis is available upon request.