We present a system level description of a cavity-enhanced millimeter-wave spectrometer that is the first in its class to combine source and detection electronics constructed from architectures commonly deployed in the mobile phone industry and traditional pulsed Fourier transform techniques to realize a compact device capable of sensitive and specific in situ gas detections. The instrument, which has an operational bandwidth of 90-102 GHz, employs several unique components, including a custom-designed pair of millimeter-wave transmitter and heterodyne receiver integrated circuit chips constructed with 65 nm complementary metal-oxide semiconductor (CMOS) techniques. These elements are directly mated to a hybrid coupling structure that enables free-space interaction of the electronics with a small gas volume while also acting as a cavity end mirror. Instrument performance for sensing of volatile compounds is highlighted with experimental trials taken in bulk gas flows and seeded molecular beam environments.
This paper describes our vision on the architectures required to build next generation systems. Next generation systems will not be PC centric anymore, but they will be built based on distributed, networked, power constraint embedded systems on a chip (SOC) or systems on a multi chip module (SOM). These architectures will consist of large set of heterogeneous building blocks, many of them reconfigurable at different levels of abstraction. The paper will describe new forms of reconfigurable interconnect and it will include a description of the critical position of reconfigurable interconnect in these architectures. The challenge is not to provide general reconfigurability but to tune it to optimize the energy efficiency. Categories and Subject Descriptors C.3 [Computer Systems Organization]: Special purpose and application based systems-real-time and embedded systems.
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