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Inventor: Chih-Hung Chen


Address: Hsinchu, TW
No. of applications: 5
Last application issue date: 04/30/2009

Application No.Application TitleIssue Date
20090108935Variable gain amplifier including series-coupled cascode amplifiers
A variable gain amplifier to convert an amplifier input voltage to an amplifier output voltage, the variable gain amplifier includes: a plurality of cascode amplifiers coupled in series; a plurality of switching transistor pair circuits coupled in series; and a bias cir...
04/30/2009
20090108944LOW-NOISE AMPLIFIER CIRCUIT INCLUDING BAND-STOP FILTER
A low-noise amplifier circuit includes a MOS transistor in a common gate amplifier configuration. A single-ended input is at a source of the MOS transistor. A resonant cavity filter circuit is coupled to a gate of the MOS transistor....
04/30/2009
20080061112Method for soldering charge coupled device and tooling thereof
A method for soldering charge coupled device to improve the yield, working efficiency and imperfection of manual soldering. The method includes the steps of heating a base of a tooling by a heating board; putting a circuit broad having solders on the base; melting the s...
03/13/2008
20060128964METHOD FOR PREPARING 2- (2-PYRIDYLMETHYLSULPHINYL) BENZIMIDAZOLES
The present invention provides a method for preparing an antiulcer agent, 2-(2-pyridylmethylsulphinyl)benzimidazoles, such as Omeprazole, Lansoprazole and Pantoprazole, which includes oxidizing an intermediate having a linkage of methylthio group (—CH2S—)...
06/15/2006
20060104398Frequency synthesizing device with automatic calibration
A frequency synthesizer with automatic calibration includes a voltage-controlled oscillator, which has several working bands for receiving a coarse-tuned signal and a fine-tuned signal and generating an output signal in the working band of the coarse-tuned signals; prel...
05/18/2006
 
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