CMOS Silicon-on-Sapphire RF Tunable Matching Networks

Thin film PIN photodiodes for optoelectronic silicon on sapphire CMOS

In this paper, we consider both the utility of SOS substrates as a vehicle for optoelectronic packaging and the high speed silicon photodiodes available on a commercial SOS process. We show optical responses for six configurations of PIN photodiodes designed in this process. Our results indicate that photodiodes native to this process will operate at better than gigabit rates and produce signal...

Electronically Tunable Impedance-Matching Networks for Intelligent RF Power Amplifiers

This paper presents the simulation and optimization design of the electronically tunable impedance-matching networks for intelligent RF power amplifiers in a cognitive radio system. Reconfigurable elements, such as varactors and RF switches are utilized to achieve the dynamic impedance matching both in the input and output matching circuit, providing coarse and fine tuning of the target impedan...

Silicon-on-Sapphire Waveguides for Widely Tunable Coherent Mid-IR Sources

Low-voltage temperature sensor for micro- power harvesters in silicon-on-sapphire CMOS

A low-voltage temperature sensor designed for MEMS power harvesting systems is fabricated. The core of the sensor is a bandgap voltage reference circuit operating with a supply voltage in the range 1–1.5 V. The prototype was fabricated on a conventional 0.5 mm silicon-onsapphire (SOS) process. The sensor design consumes 15 mA of current at 1 V. The internal reference voltage is 550 mV. The temp...

Single Event Effects in a 0.25 μm Silicon-On-Sapphire CMOS Technology

Wickham Chen, Southern Methodist University, Dallas, TX, 75275. Phone: 214-768-1402. Fax: 214-768-3573. Email: [email protected] Tiankuan Liu, Southern Methodist University, Dallas, TX, 75275. Phone: 214-768-1541. Fax: 214-768-4095. Email: [email protected] Ping Gui, Southern Methodist University, Dallas, TX, 75275. Phone: 214-768-1733. Fax: 214-768-3573. Email: [email protected] Annie C...