公开(公告)号：WO2014093409A3

公开(公告)日：2014-08-28

申请号：PCT/US2013074221

申请日：2013-12-10

Applicant: QUALCOMM INC

Inventor： LEUNG LAI KAN ,  NARATHONG CHIEWCHARN ,  HU JIANYUN ,  FENG YUNFEI

IPC: H04B17/00 ,  H04B1/30

CPC classification number: H04B17/21 ,  H04B1/16 ,  H04B1/30 ,  H04B17/00 ,  H04B17/29

Abstract: Receiver circuits that can be reconfigured to generate test signals in a wireless device are disclosed. In an exemplary design, an apparatus includes a mixer and an amplifier. The mixer downconverts an input radio frequency (RF) signal based on a local oscillator (LO) signal in a first mode. The amplifier, which is formed by at least a portion of the mixer, amplifies the LO signal and provides an amplified LO signal in a second mode. In another exemplary design, an apparatus includes an amplifier and an attenuator. The amplifier receives and amplifies an input RF signal in a first mode. The attenuator, which is formed by at least a portion of the amplifier, receives and passes an LO signal in a second mode.

Abstract translation: 公开了可以重新配置为在无线设备中生成测试信号的接收器电路。 在示例性设计中，装置包括混频器和放大器。 混频器在第一模式中基于本地振荡器（LO）信号来下变频输入射频（RF）信号。 由混频器的至少一部分形成的放大器放大LO信号并在第二模式下提供放大的LO信号。 在另一个示例性设计中，装置包括放大器和衰减器。 放大器在第一模式下接收并放大输入RF信号。 由放大器的至少一部分形成的衰减器以第二模式接收并通过LO信号。