公开(公告)号：US07012484B2

公开(公告)日：2006-03-14

申请号：US10831318

申请日：2004-04-26

申请人： Sheng-Fuh Chang ,  Yng-Huey Jeng

发明人： Sheng-Fuh Chang ,  Yng-Huey Jeng

IPC分类号： H01P1/203

CPC分类号： H01P1/20345 ,  H03H7/0123 ,  H03H7/1758 ,  H03H7/1775

摘要： The present invention discloses a filter using multilayer ceramic technology. The filter comprises an input port, an output port, a first lumped resonator and a first step-impedance resonator connected to the input port, a second lumped resonator and a second step-impedance resonator connected to the output port, a coupling capacitor used for the coupling of the first lumped resonator and the first step-impedance resonator to the second lumped resonator and the second step-impedance resonator. The filter according to the present invention can provide the multi-transmission zeros in the stopband to isolate the adjacent channel and suppress the harmonics, and provide the transmission poles in the passband to have lower insertion loss. In addition, a manufacturing method for the filter using multilayer ceramic technology is also disclosed.

摘要翻译： 本发明公开了一种使用多层陶瓷技术的过滤器。 滤波器包括输入端口，输出端口，第一集总谐振器和连接到输入端口的第一阶梯式阻抗谐振器，连接到输出端口的第二集总谐振器和第二级阻抗谐振器，用于 将第一集总谐振器和第一阶梯阻抗谐振器耦合到第二集总谐振器和第二阶阻抗谐振器。 根据本发明的滤波器可以在阻带中提供多传输零点，以隔离相邻信道并抑制谐波，并且提供通带中的传输极具有较低的插入损耗。 此外，还公开了使用多层陶瓷技术的过滤器的制造方法。

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。