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公开(公告)号：US10771064B1
公开(公告)日：2020-09-08
申请号：US16580550
申请日：2019-09-24
Applicant: NATIONAL CHI NAN UNIVERSITY
Inventor： Yo-Sheng Lin , Kai-Siang Lan
Abstract: An injection locked frequency divider includes: a resonator circuit including first to fourth inductors; and a mixer circuit receiving an input signal with an input frequency. Each of the third and fourth inductors is coupled between a respective one of the first and second inductors and the mixer circuit. The two circuits cooperate to form a tank circuit having a free-running frequency and defining a frequency locking range which is around three times the free-running frequency and within which the input frequency falls. By at least performing mixing with a differential reference signal pair, the mixer circuit generates, based on the input signal, a differential mixed signal pair with a frequency that is one-third the input frequency.
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公开(公告)号：US10116276B2
公开(公告)日：2018-10-30
申请号：US15355451
申请日：2016-11-18
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Chien-Chin Wang
Abstract: 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.
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公开(公告)号：US10056789B2
公开(公告)日：2018-08-21
申请号：US15381398
申请日：2016-12-16
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Kai-Siang Lan
CPC classification number: H02J50/20 , B23Q1/0009 , B23Q1/70 , H02J7/025 , H02J50/80 , H04B5/0037
Abstract: 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.
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公开(公告)号：US09166848B2
公开(公告)日：2015-10-20
申请号：US14282333
申请日：2014-05-20
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Chien-Chin Wang , Chien-Yu Li
IPC: H04L27/06 , H04L27/152 , H04W52/02
CPC classification number: H04L27/1525 , H04W52/0209 , Y02D70/00
Abstract: A frequency-shift keying (FSK) receiver includes an injection-locking oscillating circuit to receive a FSK input signal, and a phase detecting circuit. The injection-locking oscillating circuit outputs a locked signal having a phase that tracks a phase of the FSK input signal. A difference between the phases of the FSK input signal and the locked signal is associated with a difference between a frequency of the FSK input signal and a free-running frequency of the injection-locking oscillating circuit. The phase detecting circuit receives the FSK input signal and the locked signal, and outputs a baseband logic signal according to the difference between the phases of the FSK input signal and the locked signal.
Abstract translation: 频移键控（FSK）接收机包括用于接收FSK输入信号的注入锁定振荡电路和相位检测电路。 注入锁定振荡电路输出具有跟踪FSK输入信号的相位的相位的锁定信号。 FSK输入信号和锁定信号的相位之间的差异与FSK输入信号的频率和注入锁定振荡电路的自由运行频率之间的差异相关联。 相位检测电路接收FSK输入信号和锁定信号，并根据FSK输入信号和锁定信号的相位之差输出基带逻辑信号。
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公开(公告)号：US11533021B1
公开(公告)日：2022-12-20
申请号：US17528307
申请日：2021-11-17
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Kai-Siang Lan
Abstract: A down-conversion mixer includes a converting-and-mixing circuit and a load circuit. The converting-and-mixing circuit performs voltage to current conversion and mixing with a differential oscillatory voltage signal pair upon a differential input voltage signal pair to generate a differential mixed current signal pair. The load circuit includes two transistors each having a transconductance that varies according to a control voltage, two resistors each decreasing a threshold voltage of a respective one of the transistors, and a resistor-inductor circuit cooperating with the transistors to convert the differential mixed current signal pair into a differential mixed voltage signal pair.
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Patent Agency Ranking
公开(公告)号：US10389302B2
公开(公告)日：2019-08-20
申请号：US15624800
申请日：2017-06-16
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Jin-You Liao
IPC: H03B5/12
Abstract: 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. Each inductor receives a respective oscillation voltage signal, and provides a respective input voltage signal. Each amplifier generates a respective current signal based on a respective input voltage signal. When one of the current signals has a magnitude that varies according to a magnitude of the respective input voltage signal, the other of the current signals has a constant magnitude. The current signals are combined into an output current signal at a common node of the amplifiers.
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公开(公告)号：US10326459B1
公开(公告)日：2019-06-18
申请号：US16126881
申请日：2018-09-10
Applicant: NATIONAL CHI NAN UNIVERSITY
Inventor： Yo-Sheng Lin , Shao-Siang Wang
Abstract: An injection locked frequency divider includes a mixer circuit and a filter circuit. The mixer circuit includes two mixer units and two inductors. The mixer units mix a differential input voltage signal with a reference signal to output a differential current signal. The inductors cooperatively receive the differential current signal from the mixer units. The filter circuit is connected to the inductors, and filters the differential current signal to output a filtered differential voltage signal.
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公开(公告)号：US10298176B2
公开(公告)日：2019-05-21
申请号：US15451024
申请日：2017-03-06
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Ching-Hung Peng
Abstract: A mixer includes a transconductance circuit and a mixing circuit. The transconductance circuit includes a capacitor and first and second transconductance modules. The first transconductance module converts a single-ended to-be-shifted voltage signal at a first terminal of the capacitor into a first input current signal. The second transconductance module converts a voltage signal at a second terminal of the capacitor into a second input current signal that cooperates with the first input current signal to constitute a differential input current signal pair. The mixing circuit mixes the differential input current signal pair with a differential oscillatory voltage signal pair to generate a differential mixed voltage signal pair.
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公开(公告)号：US09742352B2
公开(公告)日：2017-08-22
申请号：US15340558
申请日：2016-11-01
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Wei-Cheng Wen
IPC: H03B5/12
CPC classification number: H03B5/1228 , H03B5/1212 , H03B5/124 , H03B5/1243 , H03B5/1293 , H03B2200/0034
Abstract: 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. An oscillatory signal pair is provided at the first terminals of the first and second transistors.
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公开(公告)号：US09608578B2
公开(公告)日：2017-03-28
申请号：US14838434
申请日：2015-08-28
Applicant: National Chi Nan University
Inventor： Yo-Sheng Lin , Sin-Chen Lin
CPC classification number: H03F1/565 , H03F1/223 , H03F3/193 , H03F3/601 , H03F2200/222 , H03F2200/294 , H03F2200/318 , H03F2200/387 , H03F2200/411
Abstract: A low noise amplifier includes a T-type circuit, a first amplification module and a second amplification module. The T-type circuit is adapted to receive an input signal from a signal source, filters the input signal to generate a filtered signal, and is configured such that an equivalent input impedance seen into the T-type circuit matches an equivalent output impedance seen into the signal source. The first amplification module is coupled to the T-type circuit for receiving the filtered signal therefrom, and amplifies the filtered signal to generate an amplified signal. The second amplification module is coupled to the first amplification module for receiving the amplified signal therefrom, and amplifies the amplified signal to generate an output signal.
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