公开(公告)号：US08698056B2

公开(公告)日：2014-04-15

申请号：US12926723

申请日：2010-12-07

申请人： Sheng-Fuh Chang ,  Chia-Chan Chang ,  Po-Yu Tsai

发明人： Sheng-Fuh Chang ,  Chia-Chan Chang ,  Po-Yu Tsai

IPC分类号： H05B6/76 ,  G01T1/00 ,  G01D21/00

CPC分类号： G01D21/00

摘要： A battery-free electromagnetic leakage detector includes a substrate, an antenna, a filter circuit electrically connected with the antenna, a clamp circuit electrically connected with the filter circuit, and an indicating member electrically connected with the clamp circuit. Accordingly, the battery-free electromagnetic leakage detector is structurally simple and compact and can detect electromagnetic waves and display the detection without connection with any external power source.

摘要翻译： 无电池电磁泄漏检测器包括基板，天线，与天线电连接的滤波器电路，与滤波电路电连接的钳位电路以及与钳位电路电连接的指示构件。 因此，无电池的电磁泄漏检测器在结构上简单紧凑，可以检测电磁波并显示检测，而无需与任何外部电源连接。

公开(公告)号：US20090256654A1

公开(公告)日：2009-10-15

申请号：US12178703

申请日：2008-07-24

申请人： Sheng-Fuh CHANG ,  Yi-Ming CHEN ,  Cheng-Yu CHOU

发明人： Sheng-Fuh CHANG ,  Yi-Ming CHEN ,  Cheng-Yu CHOU

IPC分类号： H01P1/203

CPC分类号： H01P1/2039

摘要： The present invention discloses a switchable frequency response microwave filter, which uses voltage-controlled varactors to attain the separation or combination of the odd mode and even mode of signals in a dual-mode ring resonator to realize a bandpass or bandstop function and then controls the frequency response of the output filtered signals. Further, the present invention integrates different circuit architectures having bandpass and bandstop functions into a single circuit to reduce the complexity of the circuit.

摘要翻译： 本发明公开了一种可切换频率响应微波滤波器，其使用压控可变电抗器来实现双模环形谐振器中奇数模式和偶数模式信号的分离或组合，以实现带通或带阻功能，然后控制 输出滤波信号的频率响应。 此外，本发明将具有带通和带阻功能的不同电路架构集成到单个电路中以降低电路的复杂性。

公开(公告)号：US07444167B2

公开(公告)日：2008-10-28

申请号：US11149230

申请日：2005-06-10

申请人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Cheng-Hua Tsai ,  Chin-Hung Chien ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Cheng-Hua Tsai ,  Chin-Hung Chien ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H04Q7/32

CPC分类号： H04B1/0071 ,  H04B1/0082

摘要： The present invention discloses a dual-band RF transceiver. The transceiver comprises a first module, used as the RF front-end of the dual-band transceiver and used for receiving and transmitting a first RF signal and a second RF signal; a second module, electrically connected to the first module, used as the IF IQ modulator/demodulator of the dual-band RF transceiver; a third module, electrically connected to the first and the second modules, used as the tripe-band phase-locked frequency synthesizer of the dual-band RF transceiver and used for providing a first local oscillating signal and a second local oscillating signal to the first module, and a third local oscillating signal to the second module. The dual-band RF transceiver according to the present invention realizes the dual-band triple-mode operation of IEEE802.11 a/b/g by a single dual-band RF module, and therefore the circuit size, power dissipation, component count, and cost can be dramatically reduced.

摘要翻译： 本发明公开了一种双频RF收发器。 收发器包括用作双频带收发器的RF前端并用于接收和发送第一RF信号和第二RF信号的第一模块; 电连接到第一模块的第二模块，用作双频RF收发器的IF IQ调制器/解调器; 电连接到第一和第二模块的第三模块，用作双频带RF收发器的三频带锁相频率合成器，用于向第一和第二模块提供第一本地振荡信号和第二本地振荡信号 模块和第三本地振荡信号发送到第二模块。 根据本发明的双频RF收发器通过单个双频RF模块实现IEEE802.11a / b / g的双频三模操作，因此电路尺寸，功耗，组件数， 并且成本可以大大降低。

公开(公告)号：US07193477B2

公开(公告)日：2007-03-20

申请号：US11147458

申请日：2005-06-08

申请人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H03F3/04

CPC分类号： H03F3/191 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/372

摘要： The present invention discloses a gain amplifier, capable of concurrently operating at three different frequency bands. The gain amplifier comprises an amplification stage for amplifying a signal applied to an input of the amplifier and a triple-band resonance load connected between a DC bias voltage and a DC bias input of the amplification stage. The triple-band resonance load uses a set of reactive elements to provide match in a first frequency band, a second frequency band and in a third frequency band, such as at 2.4 GHz, 5.8 GHz and 9.0 GHz. According to the gain amplifier of the present invention, it can effectively provide triple-band signal amplification and in-band interference suppression for various multi-standard coexist communication systems.

摘要翻译： 本发明公开了一种增益放大器，能够同时在三个不同的频带工作。 增益放大器包括用于放大施加到放大器的输入的信号的放大级和连接在放大级的DC偏置电压和DC偏置输入之间的三频带谐振负载。 三频带谐振负载使用一组无功元件来提供第一频带，第二频带和第三频带（例如，2.4GHz，5.8GHz和9.0GHz）的匹配。 根据本发明的增益放大器，可以有效地为各种多标准并存通信系统提供三频带信号放大和带内干扰抑制。

公开(公告)号：US20060279362A1

公开(公告)日：2006-12-14

申请号：US11147458

申请日：2005-06-08

申请人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H03F3/191

CPC分类号： H03F3/191 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/372

摘要： The present invention discloses a gain amplifier, capable of concurrently operating at three different frequency bands. The gain amplifier comprises an amplification stage for amplifying a signal applied to an input of the amplifier and a triple-band resonance load connected between a DC bias voltage and a DC bias input of the amplification stage. The triple-band resonance load uses a set of reactive elements to provide match in a first frequency band, a second frequency band and in a third frequency band, such as at 2.4 GHz, 5.8 GHz and 9.0 GHz. According to the gain amplifier of the present invention, it can effectively provide triple-band signal amplification and in-band interference suppression for various multi-standard coexist communication systems.

摘要翻译： 本发明公开了一种增益放大器，能够同时在三个不同的频带工作。 增益放大器包括用于放大施加到放大器的输入的信号的放大级和连接在放大级的DC偏置电压和DC偏置输入之间的三频带谐振负载。 三频带谐振负载使用一组无功元件来提供第一频带，第二频带和第三频带（例如，2.4GHz，5.8GHz和9.0GHz）的匹配。 根据本发明的增益放大器，可以有效地为各种多标准共存通信系统提供三频带信号放大和带内干扰抑制。

公开(公告)号：US20060091979A1

公开(公告)日：2006-05-04

申请号：US10978395

申请日：2004-11-02

申请人： Sheng-Fuh Chang ,  Shuen-Chien Chang ,  Jia-Liang Cheng ,  Shih-Chieh Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Shuen-Chien Chang ,  Jia-Liang Cheng ,  Shih-Chieh Chen ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H01P1/203

CPC分类号： H01P1/20363 ,  H01P1/20372 ,  H01P1/20381

摘要： A dual-band bandpass filter with stepped-impedance resonators uses only one circuit to generate dual-band effect. It adopts the principle of stepped-impedance resonator, which contains a connecting section and two coupling sections. The impedance and electrical length of the connecting section and coupling sections conforms to a selected condition to generate two passbands at desired frequencies. A multi-layer broadside-coupled parallel lines structure may be applied to increase coupling-amount between the parallel lines so that the dual-band bandpass filters have broader bandwidth and less loss.

摘要翻译： 带有阶梯型阻抗谐振器的双频带通滤波器仅使用一个电路来产生双频带效应。 它采用阶梯阻抗谐振器的原理，其包含连接部分和两个耦合部分。 连接部分和耦合部分的阻抗和电长度符合所选条件，以产生所需频率的两个通带。 可以应用多层宽边耦合并行线结构来增加并联线之间的耦合量，使得双频带通滤波器具有更宽的带宽和更小的损耗。

公开(公告)号：US20060044074A1

公开(公告)日：2006-03-02

申请号：US10932086

申请日：2004-09-02

申请人： Sheng-Fuh Chang ,  Jia-Liang Chen ,  Chuan-Ting Wu ,  Juo-Rui Tsai ,  Zong-Hsian Tsai ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Jia-Liang Chen ,  Chuan-Ting Wu ,  Juo-Rui Tsai ,  Zong-Hsian Tsai ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H01P5/18

CPC分类号： H01P5/185 ,  H01P5/187

摘要： A spurline directional coupler includes a first coupling section and a second coupling section that are in parallel with each other for coupling, and a first sub-coupling section and a second sub-coupling section coupled with the first coupling section, and a third sub-coupling section and a fourth sub-coupling section coupled with the second coupling section. The parallel coupling relationship between the coupling section and the sub-coupling sections generates a capacitive effect thereby may improve isolation and directivity of the spurline directional coupler.

摘要翻译： 支线定向耦合器包括彼此并联以耦合的第一耦合部分和第二耦合部分，以及与第一耦合部分耦合的第一子耦合部分和第二子耦合部分， 耦合部分和与第二耦合部分耦合的第四子耦合部分。 耦合部分和子耦合部分之间的并联耦合关系产生电容效应，从而可以提高支线定向耦合器的隔离度和方向性。

公开(公告)号：US06714088B2

公开(公告)日：2004-03-30

申请号：US10065292

申请日：2002-10-01

申请人： Sheng-Fuh Chang ,  Jia-Liang Chen ,  Shi-Wei Kuo

发明人： Sheng-Fuh Chang ,  Jia-Liang Chen ,  Shi-Wei Kuo

IPC分类号： H03B714

CPC分类号： H03B5/1847

摘要： A low-phase noise oscillator with a microstrip resonator for generating a target signal with a predetermined frequency is provided. The resonator includes a first microstrip line and a second microstrip line. The first microstrip line is parallel with the second microstrip line without having any contact. A length of the first microstrip line equals a length of the second microstrip line, and the length equals a quarter wavelength of the target signal. When a plurality of oscillating signals is transmitted to the first microstrip line, one of the oscillating signals having the predetermined frequency will be output from the resonator by an electromagnetic coupling generated between the first microstrip line and the second microstrip line.

摘要翻译： 提供具有用于产生具有预定频率的目标信号的微带谐振器的低相位噪声振荡器。 谐振器包括第一微带线和第二微带线。 第一条微带线与第二条微带线并联，没有任何接触。 第一微带线的长度等于第二微带线的长度，并且长度等于目标信号的四分之一波长。 当多个振荡信号被发送到第一微带线时，具有预定频率的振荡信号中的一个将通过在第一微带线和第二微带线之间产生的电磁耦合从谐振器输出。

公开(公告)号：US20110291011A1

公开(公告)日：2011-12-01

申请号：US12926723

申请日：2010-12-07

申请人： Sheng-Fuh Chang ,  Chia-Chan Chang ,  Po-Yu Tsai

发明人： Sheng-Fuh Chang ,  Chia-Chan Chang ,  Po-Yu Tsai

IPC分类号： G01T1/00 ,  G01D21/00

CPC分类号： G01D21/00

摘要： A battery-free electromagnetic leakage detector includes a substrate, an antenna, a filter circuit electrically connected with the antenna, a clamp circuit electrically connected with the filter circuit, and an indicating member electrically connected with the clamp circuit. Accordingly, the battery-free electromagnetic leakage detector is structurally simple and compact and can detect electromagnetic waves and display the detection without connection with any external power source.

摘要翻译： 无电池电磁泄漏检测器包括基板，天线，与天线电连接的滤波器电路，与滤波电路电连接的钳位电路以及与钳位电路电连接的指示构件。 因此，无电池的电磁泄漏检测器在结构上简单紧凑，可以检测电磁波并显示检测，而无需与任何外部电源连接。

公开(公告)号：US07245186B2

公开(公告)日：2007-07-17

申请号：US10882215

申请日：2004-07-02

申请人： Sheng Fuh Chang ,  Jia Liang Chen ,  Cherng Cherng Liu ,  Hung Cheng Chen ,  Shu Fen Tang ,  Albert Chen

发明人： Sheng Fuh Chang ,  Jia Liang Chen ,  Cherng Cherng Liu ,  Hung Cheng Chen ,  Shu Fen Tang ,  Albert Chen

IPC分类号： H03F3/04

CPC分类号： H03F3/191 ,  H03F2200/147 ,  H03F2200/222 ,  H03F2200/372

摘要： The present invention discloses a bandpass amplifier having gain and bandpass performance. The bandpass amplifier includes an input match unit for matching the gain of the amplifier and having a first filter response; a first bias unit electrically connected to the input match unit for driving the first terminal of the amplifier and having a first high pass filter response; a gain stage electrically connected to the first bias unit for providing the flat gain of the amplifier; a second bias unit electrically connected to the gain stage for driving the second terminal of the amplifier and having a second high pass filter response; and an output match unit electrically connected to the second bias unit for matching the gain of the amplifier and having a second filter response.

摘要翻译： 本发明公开了具有增益和带通性能的带通放大器。 带通放大器包括用于匹配放大器的增益并具有第一滤波器响应的输入匹配单元; 电连接到输入匹配单元的第一偏置单元，用于驱动放大器的第一端并具有第一高通滤波器响应; 增益级，电连接到第一偏置单元，用于提供放大器的平坦增益; 电连接到增益级的第二偏置单元，用于驱动放大器的第二端并具有第二高通滤波器响应; 以及输出匹配单元，电连接到第二偏置单元，用于匹配放大器的增益并具有第二滤波器响应。