To meet requirements for future planetary and astrophysics space missions, new mixers have been designed to take advantage of the frameless GaAs membrane technology developed at JPL. Single-diode fundamental mixers have been designed for 350,440, 560,640 and 1200 GHz, with 14% bandwidth. Additionally, subharmonic mixers for 560 GHz have been designed. Two circuit topologies have been used for t...

A detailed description is presented for a tunable far infrared laser spectrometer based on frequency mixing of an optically pumped molecular gas laser with tunable microwave radiation in a Schottky point contact diode. The system has been operated on over 30 laser lines in the range 10-100 cmi and exhibits a maximum absorption sensitivity near one part in 106. Each laser line can be tuned by f ...

Flexible radiation dosimeters have been produced incorporating thick films (>1 μm) of the semiconducting polymer poly([9,9-dioctylfluorenyl-2,7-diyl]-co-bithiophene). Diode structures produced on aluminium-metallised poly(imide) substrates, and with gold top contacts, have been examined with respect to their electrical properties. The results suggest that a Schottky conduction mechanism occurs ...

LLE Review, Volume 143 167 Introduction Room-temperature nanodevices based on quantum confinement and/or ballistic nonlinearities are intrinsic nanostructures, not simply scaled-down conventional circuitry, and are gaining wide-spread research attention. Among the nanodevices, one of the most popular is the asymmetric nanochannel diode (ANCD), also referred to as a self-switching diode (SSD), f...

In this paper studies on Si/ZnO heterojunction diode is presented. In this work Zinc oxide (ZnO) was conformally deposited on Silicon (Si) Wafer by atomic layer deposition (ALD) technique without using a buffer layer. For low-temperature ALD deposition, diethyl zinc (DEZn) and deionized (DI) water were used as the sources for zinc and oxygen respectively. Surface characterization and optical ch...

AbstructThe first coherent measurement of submillimeterwave sideband generator (SBG) output power is reported here. This SBG utilizes a submillimeter laser, microwave synthesizer, and high frequency Schottky diode to produce tunable radiation. Record efficiency and output power (10.5 pW) at a drive frequency of 1.6 THz has been obtained, and SBG radiation was efficiently separated from the lase...

The Tevatron is a single beam pipe machine which contains both protons and anti-protons for HEP. This poses a challenge for measuring betatron tunes because of the possibility of contamination from the other species. In order to overcome this problem, stripline type structures are usually used because they are directional by construction or for the case of the 21.4 MHz Schottky system, a clever...

In 1992 International Rectifier Corp. introduced the first commercially available diode based on this concept [3]. The superior properties of those devices have been improved further by means of axial lifetime engineering [4-7]. The final result is an IGBT companion diode with low forward voltage drop, a positive temperature coefficient, soft reverse recovery, and high ruggedness. This paper sh...