公开(公告)号：US06205171B1

公开(公告)日：2001-03-20

申请号：US09075076

申请日：1998-05-08

申请人： Wen-Wei Yang ,  Min Hung Shen ,  Chen-Chung Kuo ,  Shuw Guann Lin ,  Ssu-Pin Ma

发明人： Wen-Wei Yang ,  Min Hung Shen ,  Chen-Chung Kuo ,  Shuw Guann Lin ,  Ssu-Pin Ma

IPC分类号： H04B138

CPC分类号： H04B1/44 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/372

摘要： A wireless LAN RF module uses a low power transistor switchable voltage divider circuit to control the bias input of a GaAs MESFET output power amplifier. This bias control circuit provides stable, high speed on-off switching of the power amplifier stage by applying low power bias voltages to the MESFET gate input, rather than by interrupting the high power MESFET drain to Vdd circuit.

摘要翻译： 无线LAN RF模块使用低功率晶体管可切换分压器电路来控制GaAs MESFET输出功率放大器的偏置输入。 该偏置控制电路通过向MESFET栅极输入施加低功率偏置电压而不是通过将高功率MESFET漏极中断到Vdd电路来提供功率放大器级的稳定的高速开关切换。

公开(公告)号：US6054952A

公开(公告)日：2000-04-25

申请号：US191932

申请日：1998-11-13

申请人： Min-Hung Shen ,  Sheng-Ming Deng ,  Tsung-Yang Hung

发明人： Min-Hung Shen ,  Sheng-Ming Deng ,  Tsung-Yang Hung

IPC分类号： H01Q1/38 ,  H01Q1/52 ,  H01Q5/00 ,  H01Q5/371 ,  H01Q9/04

CPC分类号： H01Q9/0407 ,  H01Q1/38 ,  H01Q1/526 ,  H01Q5/371

摘要： A broad-band microstrip antenna implemented using a dielectric base as its main body is disclosed. The base has two sides where the dual-mode resonator is located on the first side, while the grounded plane is located on the second side of the dielectric base. The dual-mode resonator has a high-frequency resonator and a low-frequency resonator, which are partially positioned in parallel. Due to the electric-magnetic effects, these two resonators are mutually coupled to significantly increase the operating bandwidth. In addition, there is a feed line on the first side of the dielectric base, which connects to the dual-mode resonator to provide signal transmission. In addition, there is a grounded mask in the antenna, which is located on the first side of the dielectric base, to provide sheltering for the feed line, and connect to the grounded plane to form a closed area to provide a more complete radiation field pattern.

摘要翻译： 公开了使用电介质基底作为其主体实现的宽带微带天线。 基座具有两侧，双模共振器位于第一侧，而接地平面位于电介质基座的第二侧。 双模谐振器具有高频谐振器和低频谐振器，它们被部分地并联放置。 由于电磁效应，这两个谐振器相互耦合以显着增加工作带宽。 此外，在电介质基底的第一侧上有馈电线，该馈电线连接到双模谐振器以提供信号传输。 另外，在天线中有一个接地的掩模，它位于电介质基底的第一面上，为馈电线提供防护，并连接到接地平面，形成一个闭合的区域，以提供更完整的辐射场 模式。

公开(公告)号：US06366764B1

公开(公告)日：2002-04-02

申请号：US09075096

申请日：1998-05-08

申请人： Wen-Wei Yang ,  Min Hung Shen ,  Chen-Chung Kuo ,  Shuw Guann Lin ,  Ssu-Pin Ma

发明人： Wen-Wei Yang ,  Min Hung Shen ,  Chen-Chung Kuo ,  Shuw Guann Lin ,  Ssu-Pin Ma

IPC分类号： H04B144

CPC分类号： H01Q1/2275 ,  H01Q1/22 ,  H04B1/48

摘要： A wireless LAN RF module uses parasitic element compensation devices in an antenna select circuit to improve port isolation. In addition, various combinations of RC filter networks and spurious radiation attenuators are incorporated into the Quad Demod/Mod and Synthesizer ;/circuits to provide suppression of EMI susceptibility and radiation throughout the RF module.

摘要翻译： 无线LAN RF模块在天线选择电路中使用寄生元件补偿装置来改善端口隔离。 此外，RC滤波器网络和杂散辐射衰减器的各种组合被并入到四路Demod / Mod和合成器/电路中，以提供整个RF模块中的EMI敏感性和辐射的抑制。

公开(公告)号：US06370361B1

公开(公告)日：2002-04-09

申请号：US09246319

申请日：1999-02-08

申请人： Tsung-Yang Hung ,  Min-Hung Shen

发明人： Tsung-Yang Hung ,  Min-Hung Shen

IPC分类号： H04B140

CPC分类号： H04B1/44 ,  H04B1/403

摘要： A transceiver with a receive/transmit fast switch function according to the invention is disclosed. In the transceiver, a frequency generator is used to generate a carrier signal which is fed into a transmitter and a receiver. Furthermore, a frequency transfer circuit and a frequency synthesizer are used to generate first, second and third local oscillation signals which are fed into the transmitter and the receiver. When transmitting a signal, the transmitter receives the carrier signal and the first local oscillation signal. The carrier signal is up converted by a mixer and then transmitted by the antenna. Inversely, when receiving a signal, the receiver receives the signal from the antenna, the receive signal is down converted in coordination with the second and third local oscillation signals and then outputted. Moreover, the receive signal can be demodulated into an FSK signal by a discriminator.

摘要翻译： 公开了具有根据本发明的接收/发送快速切换功能的收发器。 在收发器中，使用频率发生器来产生馈送到发射机和接收机中的载波信号。 此外，使用频率转移电路和频率合成器来产生馈送到发射机和接收机中的第一，第二和第三本地振荡信号。 当发送信号时，发送器接收载波信号和第一本地振荡信号。 载波信号由混频器上变频，然后由天线发射。 相反，当接收到信号时，接收机从天线接收信号，接收信号与第二和第三本地振荡信号协调地下变频，然后输出。 此外，接收信号可以通过鉴别器被解调成FSK信号。