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National Chi Nan University patents


Recent patent applications related to National Chi Nan University. National Chi Nan University is listed as an Agent/Assignee. Note: National Chi Nan University may have other listings under different names/spellings. We're not affiliated with National Chi Nan University, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | National Chi Nan University-related inventors


Digital modulating device, frequency doubling modulator thereof and frequency doubler

A digital modulating device includes an oscillator that generates an oscillation signal, and a frequency doubling modulator that includes: a single-ended to differential converter converting the oscillation signal into two periodic signals; two inductors respectively receiving the periodic signals and respectively providing two input signals; a switching circuit; and two amplifier circuits. When the switching circuit operates in a first state, the amplifier circuits respectively amplify the input signals to respectively generate two amplified signals that are combined into a combined signal at a common node thereof. ... National Chi Nan University

Voltage-controlled oscillator

A voltage-controlled oscillator includes an oscillation generator, two inductors and two amplifiers. The oscillation generator generates two oscillation voltage signals based on a control voltage. ... National Chi Nan University

Method for preparation of gold nanoparticles through pulsed laser

. . A method for preparation of gold nanoparticles in aqueous solution through pulsed laser, comprises firstly preparing an aqueous solution including haucl4.h2o and h2o2, followed by allowing a catalytic light source to emit into the aqueous solution for catalysis, such that a plurality of gold nanoparticles are formed in the aqueous solution, the catalytic light source being a pulsed laser. Additionally, it is also possible for firstly placing a porous silicon substrate into the aqueous solution, and then allowing the catalytic light source to emit into the aqueous solution for catalysis, such that the gold nanoparticles are grown on the surface of the porous silicon substrate. ... National Chi Nan University

Mixer

A mixer includes a transconductance circuit and a mixing circuit. The transconductance circuit includes a capacitor and first and second transconductance modules. ... National Chi Nan University

Method of manufacturing a photovoltaic-thermoelectric hybrid device, and photovoltaic-thermoelectric hybrid device

A photovoltaic-thermoelectric hybrid device is disclosed, which comprises a bi-layer silicon substrate, an electrode unit having a first electrode and a second electrode disposed on and connected to the bi-layer silicon substrate, and an external circuit connecting to the electrode unit, in which an electric current is set up between the first electrode and the second electrode and flows through the bi-layer silicon substrate as the first electrode is either heated or illuminated more than the second electrode.. . ... National Chi Nan University

Power amplifying converter

A power amplifying converter comprises a multi-balanced-unbalanced converting unit, a plurality of power amplifying units, a plurality of dual-path power combining units and a differential power combining unit. The multi-balanced-unbalanced converting unit is provided with a first input/output end and a plurality of second input/output ends. ... National Chi Nan University

Slot antenna

A slot antenna comprises a substrate, an antenna portion and a feed-in portion. The substrate is provided with an upper surface and a lower surface corresponding to the upper surface. ... National Chi Nan University

Wireless power transfer system and a wireless power receiver thereof

A wireless power transfer system includes a wireless power transmitter and a wireless power receiver. The wireless power receiver includes: a receiver resonator for wirelessly receiving power from the wireless power transmitter through resonant inductive coupling to generate an ac induced voltage; an ac-to-dc converter having a first input terminal and a second input terminal that are connected to the receiver resonator for receiving the ac induced voltage therefrom, and converting the ac induced voltage into a dc converted voltage; and a power storage element connected to the first and second input terminals of the ac-to-dc converter.. ... National Chi Nan University

Wireless sensor and machine tool including the same

A wireless sensor includes a wireless power module, a sensor module generating a sensor output, an analog-to-digital converter (adc) module connected to the sensor module, a wireless transceiver (trx) module operating in a receiving state by default to receive an rf input signal, transmitting an rf output signal based on digital signals when in a transmitting state, and switching back to the receiving state after a period, and a processing module connected to the adc and trx modules, activating the adc module to convert the sensor output to the digital outputs when the trx module is in the receiving state, and when receiving the digital signals, deactivating the adc module and switching the trx module to the transmitting state.. . ... National Chi Nan University

Method for updating a public key

A method for updating a public key is provided. The method includes: acquiring, by a transmitting-end device, a first hash value calculated based on a first current public key; generating a first update public key and a first update private key; generating an update string such that a hash value of a hash function calculated based at least on the first update public key and the update string is equal to the first hash value; calculating, by a receiving-end device, a second hash value based at least on the first update public key and the update string according to the hash function; and verifying the first update public key by comparing the first hash value and the second hash value.. ... National Chi Nan University

Substrate for semiconductor device and semiconductor device using the same

The present invention provides a substrate for a semiconductor device and a semiconductor device using the same. The substrate for a semiconductor device comprises a ceramic supporting base plate formed by a polycrystalline aluminum nitride (aln) sintered body; at least one silicon oxide layer formed on the base plate by a sol-gel method wherein the at least one silicon oxide layer has an average roughness less than the base plate to block polycrystalline orientation of the base plate and has a total thickness in a range of 10˜5000 nm, the silicon oxide layer is only formed from the sol-gel method and are not single crystalline; a first buffer layer comprising aluminum nitride (aln) on the at least one silicon oxide layer with a thickness of 0.1˜10 μm; and a gallium nitride layer formed on the first buffer layer and having a single-crystal crystalline structure.. ... National Chi Nan University

Radio frequency power amplifier

A radio frequency (rf) power amplifier includes an amplifying stage that includes an amplifying module, an input module and a feedback module. The amplifying module receives an rf to-be-amplified signal, and performs power amplification on the rf to-be-amplified signal to generate an rf output signal. ... National Chi Nan University

Voltage-controlled oscillator

A voltage-controlled oscillator includes a first transistor, a second transistor, a first center-tapped inductor, two first varactors, a second center-tapped inductor and two second varactors. The first and second transistors cooperatively forma cross-connected pair. ... National Chi Nan University

Power amplifier circuit

An rf power amplifier circuit includes a power divider, multiple power amplification circuits and a power combiner that cooperatively perform power amplification on an rf input signal so as to output an rf output signal, and an impedance conversion circuit that has a circuit terminal coupled to one of the power divider and the power combiner which has a microstrip structure, and that is configured such that a conversion impedance, which is an impedance seen into the impedance conversion circuit from the circuit terminal, matches an impedance seen into the power divider or the power combiner from the circuit terminal. The microstrip structure has a physical length associated with the conversion impedance.. ... National Chi Nan University

10/12/17 / #20170291201

Method for groundwater remediation using sustained-release persulfate tablets

The present invention provides a method for groundwater remediation using sustained-release persulfate tablets, which is to synthesize the persulfate and cellulose with specific ratio to form a remediated tablet, and the manufacturing process is operated under the specific pressure. In the composition of the tablet, the persulfate is used as an oxidant while the cellulose is used as a coating agent. ... National Chi Nan University

07/20/17 / #20170207749

Down-conversion mixer

A down-conversion mixer includes a trans conductance unit, a resonant unit and a mixing unit. The transconductance unit converts a differential input voltage signal pair into a differential input current signal pair. ... National Chi Nan University

06/29/17 / #20170187366

Double frequency-shift keying modulating device

A double frequency-shift keying modulating device includes a modulation module. The modulation module receives an oscillating signal and a digital signal, and generates a modulation output signal that has a first frequency. ... National Chi Nan University

04/20/17 / #20170111011

Balanced up-conversion mixer

A balanced up-conversion mixer includes: a load circuit permitting a differential radio frequency (drf) current signal pair (sp) to flow out and outputting a drf voltage sp based on its impedance, a dc bias voltage and the drf current sp; a mixing circuit allowing the drf current sp to flow thereinto based on a differential intermediate frequency voltage sp, a differential oscillating voltage sp generated based on an oscillating voltage signal by a single-ended to differential conversion circuit, and first and second currents generated by a negative resistance compensation circuit based on a dc bias voltage; and a signal amplifier circuit amplifying the drf voltage sp to generate a differential output voltage sp.. . ... National Chi Nan University

03/30/17 / #20170093338

Mixer

A mixer includes a trans conductance unit, a gain boost unit, a mixing module and a buffer. The trans conductance unit, the gain boost unit and the mixing module cooperatively mix a differential input voltage signal pair with a differential oscillatory voltage signal pair to generate a differential mixed voltage signal pair. ... National Chi Nan University

02/16/17 / #20170047890

Voltage-controlled oscillator

A voltage-controlled oscillator includes two first inductors having a common node, two varactors respectively coupled to the first inductors, a cross-connected pair coupled to the first inductors, and a reversely tunable source degeneration module coupled to the cross-connected pair. The reversely tunable source degeneration module cooperates with the cross-connected pair to form a negative equivalent capacitance seen into the cross-connected pair from the common node of cross-connected pair and each first inductor. ... National Chi Nan University








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