公开(公告)号：US20040108920A1

公开(公告)日：2004-06-10

申请号：US10314352

申请日：2002-12-09

Applicant: Com Dev Ltd.

Inventor： Ming Yu ,  Van Dokas ,  Wai-Cheung Tang

IPC: H01P001/205

CPC classification number: H01P1/2053 ,  H01P1/20

Abstract: The invention provides a method and apparatus for an adaptively predistortion filter which has a transfer function that satisfies performance criteria specified for at least one property of the filter. The transfer function is obtained by adaptively predistorting the transfer function poles to meet the performance criteria such that at least one of the poles is shifted by a unique amount.

Abstract translation: 本发明提供了一种用于自适应预失真滤波器的方法和装置，其具有满足为滤波器的至少一个特性规定的性能标准的传递函数。 通过自适应地预失真传递函数极以满足性能标准获得传递函数，使得至少一个极被偏移独特的量。

公开(公告)号：US20030234707A1

公开(公告)日：2003-12-25

申请号：US10465226

申请日：2003-06-20

Applicant: COM DEV Ltd.

Inventor： R. Glenn Thomson ,  Ming Yu

IPC: H01P007/06

CPC classification number: H01P3/12 ,  H01P1/2138

Abstract: A waveguide assembly for operation over a range of temperatures includes a waveguide body and a plurality of restraining strips coupled to the waveguide body. The waveguide body includes a pre-curved narrow sidewall of material having a first coefficient of thermal expansion (CTE). The restraining strips are coupled to the waveguide body at first and second lateral points on either side of the pre-curved narrow sidewall laterally and are spaced apart along the length of the waveguide body, and are made from a material having a second CTE much less than the first CTE. Thus, when the temperature of the waveguide assembly changes, the restraining strips maintain a substantially constant lateral distance between said first and second lateral points over the range of temperatures such that as the length of the waveguide varies with temperature, the curvature of the pre-curved narrow sidewall also changes, causing the effective large dimension of the waveguide assembly to vary such that the combination of said changes results in a constant phase length for said waveguide body.

Abstract translation: 用于在一定温度范围内操作的波导组件包括波导体和耦合到波导体的多个限制条。 波导体包括具有第一热膨胀系数（CTE）的材料的预弯曲窄侧壁。 限制条在预弯曲的窄侧壁的任一侧上的第一和第二横向点在波导体上被耦合到波导体，并且沿着波导体的长度间隔开，并且由具有第二CTE的材料制成 比第一个CTE。 因此，当波导组件的温度改变时，限制条在温度范围内在所述第一和第二横向点之间保持基本上恒定的横向距离，使得随着波导的长度随着温度而变化， 弯曲的窄侧壁也改变，导致波导组件的有效大尺寸变化，使得所述变化的组合导致所述波导体的恒定相位长度。