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1. 发明授权

US09270314B1 RF-to-BB-current-reuse wideband receiver with a single-MOS pole-zero LPF 有权
标题翻译：具有单MOS极零LPF的RF至BB电流再利用宽带接收机
公开(公告)号：US09270314B1
公开(公告)日：2016-02-23
申请号：US14616214
申请日：2015-02-06
申请人： UNIVERSITY OF MACAU
发明人： Pui-In Mak , Fujian Lin , Rui Paulo Da Silva Martins
IPC分类号： H04B1/10 , H04B1/26 , H04B1/16 , H03F3/193 , H03D7/14
CPC分类号： H03D7/1441 , H03F1/223 , H03F3/193 , H03F3/195 , H03F3/45183 , H03F3/45475 , H03F2200/06 , H03F2200/294 , H03F2200/451 , H03F2203/45528 , H03F2203/45544 , H03F2203/45616 , H03F2203/45631 , H03F2203/45644 , H03F2203/45701
摘要： A single-MOS pole-zero lowpass filter for use in a single-ended-input current-reuse wideband receiver having a stacked RF-to-BB front end adapted to receive and process an RF signal to generate an N-phase BB signal, the lowpass filter being adapted to filter the N-phase BB signal, the lowpass filter having a lowpass input impedance for high stopband rejection at low voltage headroom consumption. The lowpass filter is arranged with one active MOS MLPF and one self-biased MOS ML; MLPF creates complex poles and two stopband zeros to boost the stopband rejection; ML provides BB current-to-voltage conversion and common-mode feedback to alleviate tradeoff between voltage headband and BB gain; and ML is diode-connected to enable the generated BB signal to be copied to a next HR stage.
摘要翻译：一种用于单端输入电流再利用宽带接收机的单MOS极零低通滤波器，具有堆叠的RF至BB前端，适于接收和处理RF信号以产生N相BB信号，所述低通滤波器适于对N相BB信号进行滤波，所述低通滤波器具有用于在低电压余量消耗下的高阻带抑制的低通输入阻抗。低通滤波器配置有一个有源MOS MLPF和一个自偏MOS MOS; MLPF创建复极点和两个阻带零点来提高阻带抑制能力; ML提供BB电流 - 电压转换和共模反馈，以减轻电压头带和BB增益之间的折衷; 并且ML被二极管连接以使得所生成的BB信号被复制到下一个HR级。

2. 发明授权

US11201503B2 Wireless charging circuit and system 有权
公开(公告)号：US11201503B2
公开(公告)日：2021-12-14
申请号：US16711465
申请日：2019-12-12
申请人： University of Macau
发明人： Zhicong Huang , Chi-Seng Lam , Pui-In Mak , Rui Paulo Da Silva Martins
IPC分类号： H02J7/00 , H02J50/12 , H02J7/02 , H02M7/219 , H02M1/08
摘要： An exemplary embodiment of the present invention is a wireless power transmission circuit that provides power to a load of variable resistance with an alternating current (AC) power source induced at a secondary coil in a secondary side of the circuit by a primary coil in a primary side of the said circuit. The wireless power transmission circuit includes a switch-controlled capacitor (SCC) and a semi-active rectifier (SAR). The SCC connects to the AC power source. The SCC includes a first capacitor connected in parallel with two electrically controllable switches in series. The SAR connects to output of the SCC for rectifying the output of the SCC, wherein the SAR comprises a bridge circuit that includes two electrically controllable switches. A control angle of the SCC and a conduction angle of the SAR are regulated to provide a load impedance that matches the impedance of the coils.

3. 发明授权

US10436726B2 Palm-size μNMR relaxometer using a digital microfluidic (DMF) device and a semiconductor transceiver for chemical/biological diagnosis 有权
公开(公告)号：US10436726B2
公开(公告)日：2019-10-08
申请号：US14881889
申请日：2015-10-13
申请人： UNIVERSITY OF MACAU
发明人： Ka-Meng Lei , Pui-In Mak , Man-Kay Law , Rui Paulo Da Silva Martins
IPC分类号： G01N24/08 , G01R33/44 , G01R33/30 , G01R33/341 , G01R33/34 , G01R33/36
摘要： A palm-size portable μNMR relaxometer system for performing multi-step multi-sample chemical/biological assays, comprising a PCB having a CMOS μNMR transceiver and a DMF device integrated thereon. A portable magnet has an inner gap configured to at least partially receive the DMF device. The DMF device comprises a platform of electrodes including a sensing site and receives one or more samples for analysis at an electrode and automatically transports the one or more samples on individual paths sequentially to the sensing site, for performing sensing on each sample sequentially. A Butterfly coil disposed on the PCB and underneath the DMF device and is at least partially received in the inner gap. The Butterfly coil excites the sample at the μNMR sensing site by transducing a magnetic field produced at the sensing site to an electrical signal which is processed by the CMOS μNMR transceiver to produce an analytical signal.

4. 发明授权

US09356636B1 RF-to-BB-current-reuse wideband receiver with parallel N-path active/passive mixers 有权
标题翻译：具有并行N路主动/被动混频器的RF至BB电流再利用宽带接收机
公开(公告)号：US09356636B1
公开(公告)日：2016-05-31
申请号：US14616085
申请日：2015-02-06
申请人： UNIVERSITY OF MACAU
发明人： Pui-In Mak , Fujian Lin , Rui Paulo Da Silva Martins
IPC分类号： H04B1/10 , H04B1/16 , H03D7/14 , H03F3/193 , H04B1/12
CPC分类号： H03D7/1441 , H03D7/1466 , H03D7/1491 , H03D7/165
摘要： A single-ended-input current-reuse wideband receiver comprising (1) a stacked Radio Frequency to Baseband (RF-to-BB) front-end with an 8-path active mixer realizing RF amplification, harmonic-recombination (HR) down-conversion, and BB filtering in the current domain for better linearity and power efficiency; (2) a feedforward 8-path passive mixer enabling LO-defined input impedance matching without external components, while offering frequency-translated bandpass filtering and noise cancelling; (3) a single-MOS pole-zero lowpass filter (LPF) permitting both RF and BB filtering at low voltage headroom consumption, while easing the tradeoff between the in-/out-of-band linearity; and (4) a BB-only two-stage HR amplifier boosting the 3rd and 5th harmonic rejection ratios (HRR3,5) with low hardware intricacy.
摘要翻译：一种单端输入电流再利用宽带接收机，包括：（1）堆叠的射频到基带（RF-to-BB）前端，具有8路有源混频器，实现RF放大，谐波重组（HR）转换和BB滤波，以获得更好的线性和功率效率; （2）前馈8路无源混频器，可实现LO定义的输入阻抗匹配，无需外部元件，同时提供频率转换的带通滤波和噪声消除; （3）一个单MOS极零低通滤波器（LPF），可以在低电压净空消耗下同时进行RF和BB滤波，同时简化带内线性度之间的折衷; 和（4）仅BB级两级HR放大器以低硬件复杂度提升第3和第5谐波抑制比（HRR3,5）。

5. 发明授权

US11545901B1 Control system for buck converter 有权
公开(公告)号：US11545901B1
公开(公告)日：2023-01-03
申请号：US17370188
申请日：2021-07-08
申请人： University of Macau
发明人： Wenliang Zeng , Chi Seng Lam , Sai Weng Sin , Weng Keong Che , Rui Paulo Da Silva Martins , Ran Ding
IPC分类号： H02M3/158 , H02M1/00 , H02M1/08
摘要： The present disclosure provides a control system of a buck converter, relating to the field of Internet of Things. The control system of a buck converter provided in an embodiment of the present disclosure includes a first control module, a second control module, and a mode selector. The first control module is turned on and the second control module is turned off through an analog current sensor in the mode selector when an IoT device switches from a transmission mode to a sleep mode or a standby mode, so that the first control module outputs a first voltage pulse to the driving and level shifter module, wherein a frequency of the first voltage pulse is determined by a frequency of a first clock in the first control module, and a width of the first voltage pulse is determined by a frequency of a second clock in the first control module.

6. 发明授权

US10256661B1 Reconfigurable bidirectional wireless charging transceiver 有权
公开(公告)号：US10256661B1
公开(公告)日：2019-04-09
申请号：US15843138
申请日：2017-12-15
申请人： University of Macau
发明人： Yan Lu , Mo Huang , Seng-Pan U , Rui Paulo Da Silva Martins
IPC分类号： H01M10/46 , H02J7/02 , H02J7/00 , H02J50/12
摘要： Bidirectional wireless power transfer (WPT) manages to provide a first aid to a mobile device that is running out of energy in urgent circumstances. To facilitate bidirectional WPT with minimum additional cost, a WPT transceiver reconfigurable for performing WPT and wireless power reception (WPR) is provided. The transceiver is reconfigurable between a differential class-D power amplifier (PA) and a full-wave rectifier. A maximum current charging mode (MCCM) is used to maximize a battery-to-battery (B2B) charging efficiency, by directly charging the loading battery with the rectifier, and by powering the PA with the sourcing battery. No output voltage or current regulation is used. Then the number of cascaded charging stages is reduced from five in the conventional design to three.

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