The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Implantable neuro-prosthetics have provided considerable clinical benefit to a range of neurological conditions. Optogenetics is a particular recent interest which utilizes high radiance light for photo-activation of genetically altered nerve cells. This can provide improved biocompatibility and neural targeting over electrical stimuli. To date the primary optical delivery method in tissue for optogenetics...
Thermal stability of the high-k/In0.53Ga0.47As interface has been analyzed by both physical and electrical methods for the first time. It has been found that As-O and In-O bonds decompose and Ga-O bonds form above 400°C, as shown by XPS and corroborated by TEM, SIMS and EDX. Electrically, this interface decomposition resulted in increased frequency dispersion (accumulation), C-V shift, and mobility...
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...
Analog-to-digital conversion plays an essential role in all kinds of electronics systems, including signal processing, communications and storage. In particular, interpolated flash ADC has been widely used in high-speed systems requiring very high sampling speed. Obviously, practical ADC design is very challenging, which has been dominated by experiences and trial-and-error skills. This is true to...
A 3.1-4.8GHz two-stage LNA for Group-1 UWB applications featuring current reuse, resistive feedback, complete and high ESD protection design is reported. ESD-RFIC co-design technique was used to ensure whole-chip optimization. The design is implemented in a foundry 0.18μm RFCMOS. Measurement shows a gain of 13.2dB/14.0dB, excellent input reflection of -13.4dB/-17.5dB, noise figure (NF) of 5.11dB/4...
A 3.1-4.8GHz LNA for lower-band UWB transceiver front-end ICs designed in a commercial 0.18μm CMOS is presented. The LNA features current reuse, resistive feedback, complete and robust full-chip ESD protection. LNA circuits with and without ESD protection are compared to minimize ESD-induced LNA performance degradation. Experiment shows a gain of 13.2dB, excellent input reflection of -13.4dB, NF of...
A new combined AC/DC-coupled output averaging technique for input amplifier design of flash analog-to-digital converters (ADC) is presented. The new offset averaging design technique takes full advantages of traditional DC-coupled resistance averaging and AC-coupled capacitance averaging techniques to minimize offset-induced ADC nonlinearities. Circuit analysis allows selection of optimum resistance...
A new universal stress retardation parameter set is successful to account for initial oxidation rate enhancement, orientation-dependent retardation and self-limiting phenomena observed in the dry oxidation experiment of the silicon FIN nanostructures over a wide temperature range. This stress-retarded orientation-dependent model was proved to be trustworthy in shape engineering of silicon nanowire...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.