公开(公告)号：US08805313B2

公开(公告)日：2014-08-12

申请号：US13662294

申请日：2012-10-26

Applicant: Tektronix, Inc.

Inventor： Marcus K. Da Silva ,  Gordon A. Olsen ,  Richard M. Crouch ,  Franklin M. Borden

IPC: H04B1/00 ,  H04B17/00

CPC classification number: H04B1/10 ,  H04B17/20 ,  H04B17/21 ,  H04B17/29

Abstract: An integrated calibrator provides for magnitude and phase response calibration of RF receivers to produce amplitude flatness and phase linearity across the frequency range of the RF receiver by using a simple square law diode detector and a frequency-stepped two-tone source. A two-tone source generator provides two sinusoidal signals separated by a specified frequency delta about a center frequency. The center frequency is stepped across the bandwidth of the RF receiver. At each center frequency the two sinusoidal signals are input to the RF receiver and to the diode detector. The two sinusoidal signals are processed by both the receiver path and the calibrator path, and the results are used by the calibrator to generate coefficients for a correction filter in the receiver path at each of the stepped center frequencies.

Abstract translation: 集成校准器提供RF接收器的幅度和相位响应校准，以通过使用简单的平方律二极管检测器和频率阶梯式双音源在RF接收机的频率范围内产生幅度平坦度和相位线性度。 双音源发生器提供两个正弦信号，该正弦信号由关于中心频率的指定频率增量分开。 中心频率跨越RF接收机的带宽。 在每个中心频率，两个正弦信号被输入到RF接收器和二极管检测器。 两个正弦信号由接收器路径和校准器路径两者进行处理，并且校准器使用结果在每个阶梯式中心频率处的接收机路径中生成校正滤波器的系数。