Receiver including frequency down-converter and analog-to-digital converter for a wireless telecommunication system

发明授权

US06804308B1 Receiver including frequency down-converter and analog-to-digital converter for a wireless telecommunication system 有权

标题翻译：接收机包括用于无线电信系统的降频转换器和模数转换器

请登陆查看更多内容

专利标题： Receiver including frequency down-converter and analog-to-digital converter for a wireless telecommunication system
专利标题（中）： 接收机包括用于无线电信系统的降频转换器和模数转换器
申请号： US09605465

申请日： 2000-06-28
公开(公告)号： US06804308B1

公开(公告)日： 2004-10-12
发明人: Shimen K. Claxton , Bert K. Oyama , Mark Kintis , Andrew D. Smith , Craig R. Talbott , Donald R. Martin , William M. Skones , Vincent C. Moretti
申请人： Shimen K. Claxton , Bert K. Oyama , Mark Kintis , Andrew D. Smith , Craig R. Talbott , Donald R. Martin , William M. Skones , Vincent C. Moretti
主分类号： H03K900
IPC分类号： H03K900

Receiver including frequency down-converter and analog-to-digital converter for a wireless telecommunication system

摘要：

A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.

摘要（中）：

一种用于无线电信系统的接收机（10），其提供接收信号的相对宽带信号处理，而不增加信号失真，使得可以同时处理多个接收信号。接收器（10）包括专用LNA（16），降频转换器（18）和ADC（20），以在维持接收机性能的同时执行宽带信号处理。降频转换器（18）采用合适的混频器（28），BPA（32），衰减器（34）和变压器（36），其被调谐以在期望的宽带上提供期望的频率下变频和幅度控制。根据ADC的特定性能标准（20）选择下转换器器件。在接收器（10）中包括一个专门的数字信道化器（22），其接收来自ADC（20）的数字信号，并将信号分离成多个信道。在一个实施例中，在单个下变频处理中执行降频转换，并且ADC（20）采用delta-sigma处理来在整个频带上提供数字转换。在替代实施例中，在双下变频过程中执行降频转换，使得可以使用较不复杂的ADC（62）。

信息查询

Espacenet