公开(公告)号：US07899409B2

公开(公告)日：2011-03-01

申请号：US11341382

申请日：2006-01-30

Applicant: Carol Barrett Huang ,  Edwin X. Li

Inventor： Carol Barrett Huang ,  Edwin X. Li

IPC: H04B1/44

CPC classification number: H04B1/18 ,  H04B1/0458 ,  H04B1/38

Abstract: A transceiver is described that includes a power amplifier (PA), a low noise amplifier (LNA), and an impedance matching circuit having a first and second differential output node. The first and second differential output nodes are coupled to outputs of the PA and to inputs of the LNA. The impedance matching circuit provides a load impedance to the outputs of the PA. The transceiver further includes a first impedance device having an output impedance coupled between the first and second differential output nodes. In this way, the combination of the output impedance and the load impedance matches with an impedance at the inputs of the LNA.

Abstract translation: 描述了包括功率放大器（PA），低噪声放大器（LNA）和具有第一和第二差分输出节点的阻抗匹配电路的收发器。 第一和第二差分输出节点耦合到PA的输出和LNA的输入。 阻抗匹配电路为PA的输出提供负载阻抗。 收发器还包括具有耦合在第一和第二差分输出节点之间的输出阻抗的第一阻抗装置。 以这种方式，输出阻抗和负载阻抗的组合与LNA的输入处的阻抗匹配。

公开(公告)号：US07522900B2

公开(公告)日：2009-04-21

申请号：US09813420

申请日：2001-03-20

Applicant: Stephen Allott ,  Louis Pandula ,  Edwin X. Li

Inventor： Stephen Allott ,  Louis Pandula ,  Edwin X. Li

IPC: H04B1/10

CPC classification number: H03D3/008 ,  H03D7/166 ,  H04B1/30

Abstract: A method and apparatus for determining a delay vector from inputs of in-phase and quadrature phase low pass filters to an output of the demodulator of a dual mixer radio receiver and from such delay measurement computing and providing DC offset correction to said receiver.

Abstract translation: 一种用于确定从同相和正交相位低通滤波器的输入到双混频器无线电接收机的解调器的输出的延迟矢量的方法和装置，以及从这种延迟测量计算并向所述接收机提供DC偏移校正。