专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1998011674A1 METHOD AND APPARATUS FOR SUPPRESSING TRANSMITTER OVERTONES AND RECEIVER BLOCKING SIGNALS IN A RADIO TRANSCEIVER 审中-公开
标题翻译：用于抑制无线电收发器中的发射机覆盖和接收器阻塞信号的方法和装置
公开(公告)号：WO1998011674A1
公开(公告)日：1998-03-19
申请号：PCT/SE1997001495
申请日：1997-09-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , BERGGREN, Lars , STATTIN, Hans , ANDERSSON, Christian , SVENSSON, Anders , CAMPER, Hans , NORD, Lars
IPC分类号： H04B01/48
CPC分类号： H04B1/48 , H04B1/40
摘要： Method and apparatus for efficiently suppressing receiver blocking signals and transmitter overtones in a radio transceiver. In an exemplary embodiment, a transceiver includes a transmitter for generating information signals to be transmitted by the transceiver, and a receiver for processing information signals received by the transceiver. A power amplifier connected to an output of the transmitter amplifies information signals prior to transmission, and a low-noise amplifier connected to an input of the receiver amplifies received signals prior to processing. Additionally, a band-pass filter connected to an input of the low-noise amplifier filters received signals prior to amplification. Time-division multiplexing of transmitted and received signals is accomplished by a switch alternately connecting a radio antenna of the transceiver to the output of the power amplifier in the transmit path and to the input of the band-pass filter in the receive path. A bi-directional low-pass filter, situated between the antenna and the switch, is used to filter both transmitted and received information signals. The band-pass filter and the low-pass filter attenuate disruptive receiver blocking signals. The low-pass filter also attenuates unwanted transmitter overtones.
摘要翻译：在无线电收发机中有效抑制接收机阻塞信号和发射机泛音的方法和装置。在示例性实施例中，收发器包括用于产生要由收发器发送的信息信号的发送器，以及用于处理由收发器接收的信息信号的接收器。连接到发射机的输出的功率放大器在传输之前放大信息信号，并且连接到接收机的输入端的低噪声放大器在处理之前放大接收的信号。此外，连接到低噪声放大器的输入端的带通滤波器在放大之前滤波接收的信号。发射和接收信号的时分复用是通过将收发器的无线电天线交替地连接到发射路径中的功率放大器的输出和接收路径中的带通滤波器的输入的开关来实现的。位于天线和开关之间的双向低通滤波器用于过滤发送和接收的信息信号。带通滤波器和低通滤波器衰减了破坏性接收器阻塞信号。低通滤波器还会衰减不必要的发射机泛音。

IPRDB

热门服务

关于我们

友情链接

联系方式