Journal ArticleDOI
GaAs varactor diode for u.h.f. t.v. tuners
Ikuo Niikura,Tohru Hara +1 more
TLDR
In this paper, the design and fabrication of a GaAs varactor diode for u.h.f. t.v. tuners were carried out using a double epitaxial layer.Abstract:
The design and fabrication of a GaAs varactor diode for u.h.f. t.v. tuners were carried out using a GaAs double epitaxial layer. The capacitance ratio of diode. C3/C25, is 6.0 and the series resistance at 470 MHz is 0.24 Ω. These characteristics are much better than those of an Si diode and well satisfy the requirements for t.v. tuners.read more
Citations
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Journal ArticleDOI
Liquid-phase epitaxial growth of thin GaAs layers from supercooled solutions
TL;DR: In this article, a technique for the liquid phase epitaxial growth of thin GaAs layers has been developed using supercooled solutions free from GaAs precipitates, and very smooth surfaces with a roughness smaller than 0.01 μm are obtained for layers thinner than 1μm.
Journal ArticleDOI
High-Q GaAs varactor diodes
TL;DR: In this paper, a double epitaxial gallium arsenide tuning diode has been developed for TV varactor tuners, and the capacitance variation ratio is 6.0 and is large enough to cover the UHF TV broadcasting band.
Journal ArticleDOI
GaAs Varactor Tuners for UHF TV
TL;DR: High resistance diodes in varactor tuners lead to a higher noise figure and lower gain in tuner performance, and the Q value of tuning circuit is still much lower than that of mechanical tuner in UHF region.
Journal ArticleDOI
TV Tuners Using Low Loss and Low Distortion GaAs Varactor Diodes
TL;DR: The noise figure of conventional TV varactor tuners is fairly high, when typical Si diodes, whose average resistance is 0.65Ω at 470 MHz, are used, and improvements using low loss Si rf transistors are only 1.0 ~ 1.2 dB when compared with conventional tuners.
Journal ArticleDOI
Resistance of GaAS Varactor Diodes for TV Tuners
TL;DR: Hyper-abrupt GaAs diodes have been manufactured by a double epitaxial growth technique and are commercially available and strongly requested to realize low noise TV tuners satisfying with the FCC noise figure requirement.
References
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Journal ArticleDOI
Spreading Resistance as a Function of Frequency
TL;DR: In this paper, the cylindrical capacitor is examined with emphasis on the configuration which applies to the variable-capacitor diode, which is used primarily for harmonic power generation.
Journal ArticleDOI
Liquid-phase epitaxial growth of thin GaAs layers from supercooled solutions
TL;DR: In this article, a technique for the liquid phase epitaxial growth of thin GaAs layers has been developed using supercooled solutions free from GaAs precipitates, and very smooth surfaces with a roughness smaller than 0.01 μm are obtained for layers thinner than 1μm.
Journal ArticleDOI
Junction capacitance switches
TL;DR: In this paper, the design of junction capacitance switches consisting of a combination of abrupt junctions is considered, and theoretical characteristics are calculated for ideally abrupt junction junctions.
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J.J. Harris,J.M. Woodcock +1 more