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Infrared (IR) absorption spectroscopy is widely accepted as a reliable technique for chemical and biological sensing. However, most commercially available IR spectroscopy systems are expensive, bulky bench-top instruments. Demand for developing low cost, portable IR spectroscopy system is continuously growing, especially an on-chip IR spectroscopy that can be conveniently used for field testing is...
In this contribution we describe recent progresses on ultra-sensitive chemical sensing in the mid-infrared (MIR; 3–20 μm) spectral range combining microfabricated thin-film GaAs/AlGaAs and HgCdTe waveguides with quantum cascade lasers (QCL). Epitaxial grown methods including molecular beam epitaxy (MBE) and metal-organic vapor-phase epitaxy (MOVPE) were applied facilitating the growth of 6 μm thin...
This paper presents design of an all-digital fully-integrated 5th-order Gaussian pulse generator (PG) for full band (3.1GHz-10.6GHz) impulse radio ultra wideband (IR-UWB) transceiver SoC. The design is implemented in a foundry 0.18μm CMOS process. New FCC effective isotropic radiated power (EIRP) aware design technique is used to optimize the PG. Measurement shows peak pulse amplitude of 533mV at...
Systematic investigation of novel CMOS-compatible on-chip ferrite-integrated RF inductors is reported. New ferrite-fully-filled solenoid inductor is achieved, using low-temperature ferrite nano-powder-mixed-photoresist ink jetting/spin-coating technique we developed, which shows significant improvement of +160% in L and +220% in Q, to multi-GHz. An improved equivalent circuit for new ferrite-integrated...
In this paper, a single-chip pulse-based, non-carrier, high throughput, low power ultra wideband (UWB) transceiver system-on-a-chip (SoC) with on-chip analog-to-digital converter (ADC) for high payload wireless video/audio/multimedia streaming applications is presented. To achieve high throughput (>100Mbps) and high simplicity, the UWB SoC adopts single-band (7.5GHz), pulse-based non-carrier architecture,...
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