Darrin J. Young

Learn More
In this paper, a personal micronavigation system that uses high-resolution gait-corrected inertial measurement units is presented. The goal of this paper is to develop a navigation system that uses secondary inertial variables, such as velocity, to enable long-term precise navigation in the absence of Global Positioning System (GPS) and beacon signals. In(More)
A RF voltage-controlled oscillator (VCO) employs an onchip, high-Q, three-dimensional (3-D) coil inductor and micromachined variable capacitor for frequency tuning. Unlike conventional spiral inductors, the 3-D inductor minimizes the substrate loss and achieves a record Q of 30 at 1 GHz. The micromachined variable capacitor achieves a 15% tuning range with(More)
A low-power silicon-tunnel-diode-based LC-tuned oscillator transmitter is proposed for high-temperature MEMS sensing and wireless data transmission applications. The prototype sensing and transmitting module employs a MEMS silicon capacitive pressure sensor performing pressure to frequency conversion and a miniature on-board coil loop serving as the(More)
High-performance interface electronics design for two MEMS-based wireless sensing applications, (1) strain sensing and (2) implantable blood pressure sensing, is presented. In a wireless MEMS strain sensing microsystem, a MEMS capacitive strain sensor is interfaced with a custom-designed ASIC consisting of a low-noise continuous-time synchronous-detection(More)
A wireless, batteryless, and implantable EKG and core body temperature sensing microsystem with adaptive RF powering for untethered genetically engineered mice real-time monitoring is designed, implemented, and in vivo characterized. A packaged microsystem, exhibiting a total size of 9 mm x 7 mm x 3 mm with a weight of 400 mg including a pair of(More)
An RF low phase noise voltage-controlled oscillator is implemented with micromachined IC-compatible variable capacitors and three-dimensional coil inductor. Unlike conventional on-chip passive devices, the micromachined variable capacitors achieve a high-Q value above 60 at 1 GHz with a 15% tuning range for a nominal 2 pF capacitance with 3 V tuning(More)
The design, implementation, and characterization of a microelectromechanical systems (MEMS) capacitive accelerometer-based middle ear microphone are presented in this paper. The microphone is intended for middle ear hearing aids as well as future fully implantable cochlear prosthesis. Human temporal bones acoustic response characterization results are used(More)
There is a need for high-quality implantable microphones for existing semiimplantable middle-ear hearing systems and cochlear prosthesis to make them totally implantable, thus overcoming discomfort, inconvenience, and social stigma. This paper summarizes and compares the results of an in-vitro study on three design approaches and the feasibility of using(More)