Zobrazeno 1 - 10
of 31
pro vyhledávání: '"J.A. Calviello"'
Publikováno v:
MTT-S International Microwave Symposium Digest.
Newly developed GaAs beam-lead diodes have been used in mixers covering the millimeter bands of 35 to 50 GHz, 70 to 90, and 90 to 120 GHz. The mixers were tested at room temperature and achieved the following single sideband conversion losses: 4 to 4
Autor:
J.L. Wallace, J.A. Calviello
Publikováno v:
IEEE Transactions on Electron Devices. 24:698-704
We have developed a reliable, high-performance, batch-processed, GaAs tantalum Schottky diode (with a gold overlayer) and native-oxide passivated junction1in a quasi-planar configuration, Varactors and mixers have been fabricated with near-ideal char
Publikováno v:
IEEE Transactions on Electron Devices. 32:2844-2847
A GaAs Schottky-drain [1] power FET (SDFET) having a 2.4-mm gate periphery and 1.5-µm gate length has been developed, and it realized excellent performance at 10 GHz. This includes an output power in excess of 1 W and 36-percent power-added efficien
Publikováno v:
IEEE Transactions on Electron Devices. 21:624-630
A novel quasi-planar and highly reliable varactor configuration has been developed to batch fabricate fully passivated GaAs Schottky varactors with near ideal characteristics and state of the art performance. Typically, they exhibit at zero bias a ju
Autor:
J.A. Calviello
Publikováno v:
IEEE Transactions on Electron Devices. 26:1273-1281
The purpose of this paper is to discuss key topics related to low-noise mixers, high efficiency multipliers, the use of quasi-optical techniques to reduce circuit losses, and the development of very high-Q devices applicable to the millimeter and sub
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 30:2184-2189
A subharmonic mixer is described that has an instantaneous bandwidth of 11 to 14 GHz centered near 95 GHz. A wide bandwidth is achieved by the close integration of a low-capacitance diode mount, printed circuit matching elements, and simple yet effec
Publikováno v:
Electronics Letters. 22:510-512
An all-refractory-metal GaAs MESFET (ARFET) making use of a Ta Schottky barrier with a thick gold overlayer for the source, gate and drain, and very highly doped N+-layers (2x1019 cm-3) to achieve low-resistivity nonalloyed ohmic contacts, has been s
Publikováno v:
1981 International Electron Devices Meeting.
A high-performance GaAs beam-lead Quasi-Mott Schottky barrier mixer diode (patent pending) for the millimeter and submillimeter application has been developed. Typically these devices have a zero-volt bias capacitance in the 0.005 to 0.010 pf range,
Publikováno v:
1970 International Electron Devices Meeting.
P-N and M-S epitaxial GaAs varactors have been developed for broad-band parametric amplifiers. At, zero bias the varactors have a junction capacitance of 0.15 pF, and a cutoff frequency of 700 GHz when measured at 70 GHz. Millimeter wave measurements
Autor:
J.A. Calviello
Publikováno v:
Proceedings of the IEEE. 51:611-612