公开(公告)号：WO2007048113A2

公开(公告)日：2007-04-26

申请号：PCT/US2006060082

申请日：2006-10-19

Applicant: QUALCOMM INC ,  SAMPSON WESLEY ,  HADJICHRISTOS ARISTOTELE ,  SAHOTA GURKANWAL S

Inventor： SAMPSON WESLEY ,  HADJICHRISTOS ARISTOTELE ,  SAHOTA GURKANWAL S

CPC classification number: H04B7/0871 ,  H04B7/0825 ,  H04W88/06

Abstract: A diversity receiver capable of receiving a CDMA system (e.g., a W-CDMA system) and a TDMA system (e.g., a GSM system), with receive diversity for at least one system, is described. W-CDMA is often referred to as UMTS. In one design, the diversity receiver includes a first receiver for GSM and a second receiver for UMTS. The first receiver may be implemented with one receiver design, may be spec-compliant for GSM, and may also support UMTS. The second receiver may be implemented with another receiver design, may be spec-compliant for UMTS, and may also support GSM. The first receiver may include a lowpass filter having a bandwidth that is adjustable for GSM and UMTS. The second receiver may include a bandpass filter used to attenuate a transmit frequency range for UMTS. Each receiver may include circuit blocks that are used for both GSM and UMTS.

Abstract translation: 描述了能够接收具有用于至少一个系统的接收分集的CDMA系统（例如，W-CDMA系统）和TDMA系统（例如，GSM系统）的分集接收机。 W-CDMA通常被称为UMTS。 在一种设计中，分集接收机包括用于GSM的第一接收机和用于UMTS的第二接收机。 第一接收机可以用一个接收机设计来实现，可以对GSM进行规范兼容，并且还可以支持UMTS。 第二接收机可以用另一个接收机设计来实现，可以对UMTS进行规范兼容，并且还可以支持GSM。 第一接收机可以包括具有可针对GSM和UMTS调整的带宽的低通滤波器。 第二接收机可以包括用于衰减UMTS的发射频率范围的带通滤波器。 每个接收机可以包括用于GSM和UMTS的电路块。