公开(公告)号：US06819103B2

公开(公告)日：2004-11-16

申请号：US10276983

申请日：2002-11-21

申请人： John L. Champion ,  Robert Osiander ,  Robert B. Givens ,  Dennis K. Wickenden ,  Daniel G. Jablonski ,  James H. Higbie ,  Scott T. Radcliffe ,  Margaret A. Darrin ,  Thomas J. Kistenmacher ,  Douglas A. Oursler

发明人： John L. Champion ,  Robert Osiander ,  Robert B. Givens ,  Dennis K. Wickenden ,  Daniel G. Jablonski ,  James H. Higbie ,  Scott T. Radcliffe ,  Margaret A. Darrin ,  Thomas J. Kistenmacher ,  Douglas A. Oursler

IPC分类号： G01R3300

CPC分类号： H03H9/2447 ,  H03D7/00 ,  H03H9/02259 ,  H03H2009/02511

摘要： A Lorentz force-driven mechanical resonator apparatus that utilizes a high-Q resonant structure as both a mixing device and a high-Q bandpass filter. Specifically, an external time varying, but quasistatic, magnetic field is applied to the resonating device while simultaneously running a time varying electrical current through the device. The resulting Lorentz force (I×B) is proportional to the vector product of the electrical current in the bar (I) and the external magnetic field (B). Integrating such a resonant device with a magnetic field coil produces the functionality of an ideal radio frequency (RF) mixer coupled with a high-Q intermediate frequency (IF) filter. Wide tunability provides the capability to scan, or even step, an array of filters having very narrow bandwidths via a common local oscillator to a desired frequency range.

摘要翻译： 利用高Q谐振结构作为混合装置和高Q带通滤波器的洛伦兹力驱动机械谐振器装置。 具体地，外部时变，但准静态的磁场被施加到谐振装置，同时同时运行时变电流通过该装置。 所产生的洛伦兹力（IxB）与条（I）中的电流和外部磁场（B）的矢量积成比例。 将这种谐振装置与磁场线圈集成产生与高Q中频（IF）滤波器耦合的理想射频（RF）混频器的功能。 宽可调性提供了通过公共本地振荡器扫描甚至步进具有非常窄带宽的滤波器阵列至所需频率范围的能力。