-
1.发明授权Method and apparatus to provide variable gain in a radio receiver front end 有权在无线电接收机前端提供可变增益的方法和装置公开(公告)号：US07539471B2
公开(公告)日：2009-05-26
申请号：US11394798
申请日：2006-03-30
CPC分类号： H03G3/3052
摘要： An RF receiver front end includes a variable gain low noise amplifier and/or a variable gain mixer to provide gain variability in the receiver. This gain variability may be used during, for example, automatic gain control operations. In at least one embodiment, the variable gain LNA is a broadband device that is capable of supporting multiple wireless standards.
摘要翻译： RF接收机前端包括可变增益低噪声放大器和/或可变增益混频器，以在接收机中提供增益变化。 这种增益变化可以在例如自动增益控制操作期间使用。 在至少一个实施例中，可变增益LNA是能够支持多个无线标准的宽带设备。
-
公开(公告)号：US07456667B2
公开(公告)日：2008-11-25
申请号：US11644284
申请日：2006-12-22
IPC分类号： H03K3/017
CPC分类号： H03K5/156
摘要： The duty cycle of a signal is modified by passing the signal through a plurality of inverting stages. The inverting stages each have bias circuitry to influence the input switching threshold of inverters. Multiple duty cycle modification circuits produce non-overlapping local oscillator signals in a system.
-
公开(公告)号：US07332964B2
公开(公告)日：2008-02-19
申请号：US11471095
申请日：2006-06-20
IPC分类号： H03G3/10
CPC分类号： H03G1/0088
摘要： A gain-step transconductor circuit operates with multiple gain values. The gain can be stepped from one gain value to another by selecting a different signal path between an input node and an output amplifier. The output amplifier may operate as a common source amplifier or a common gate amplifier.
摘要翻译： 增益级跨导电路以多个增益值运行。 通过在输入节点和输出放大器之间选择不同的信号路径，增益可以从一个增益值逐步增加。 输出放大器可以用作公共源放大器或公共栅极放大器。
-
公开(公告)号：US07630697B2
公开(公告)日：2009-12-08
申请号：US11714307
申请日：2007-03-06
IPC分类号： H04B1/26
CPC分类号： H04L25/085
摘要： A radio receiver measures a signal quality metric and modifies attributes of a local oscillator signal in response thereto. A digital signal processor may be used to determine a signal-to-noise-plus-distortion ratio (SNDR) of a baseband signal, and the overlap of two quadrature-related local oscillator signals may be modified.
摘要翻译： 无线电接收机测量信号质量度量并响应于此来修改本地振荡器信号的属性。 可以使用数字信号处理器来确定基带信号的信噪比加失真比（SNDR），并且可以修改两个正交相关的本地振荡器信号的重叠。
-
5.发明授权Apparatus and method reducing non-linearity in an output signal of an amplifier device 有权降低放大器装置的输出信号中的非线性的装置和方法公开(公告)号：US07288996B2
公开(公告)日：2007-10-30
申请号：US11186296
申请日：2005-07-21
IPC分类号： H03F3/04
CPC分类号： H03F1/3276 , H03F1/22
摘要： An apparatus reducing non-linearity in an output signal presented at an output locus of an amplifier device having an output unit coupled with the output locus, the output unit having at least one first operating characteristic contributing to the non-linearity, includes a compensating unit coupled with the output locus. The compensating unit has at least one second operating characteristic cooperating with the at least one first operating characteristic to effect the reducing.
摘要翻译： 一种降低在具有与输出轨迹耦合的输出单元的放大器装置的输出轨迹处呈现的输出信号中的非线性的装置，所述输出单元具有有助于非线性的至少一个第一操作特性，包括补偿单元 加上输出轨迹。 所述补偿单元具有与所述至少一个第一操作特性配合的至少一个第二操作特征以实现所述还原。
-
-
-
-
搜索结果
5 条记录 (耗时 0.029 秒)
