公开(公告)号：WO2014130152A1

公开(公告)日：2014-08-28

申请号：PCT/US2013/076639

申请日：2013-12-19

Applicant: RAYTHEON COMPANY

Inventor： ESSENWANGER, Kenneth, A.

IPC: H01P5/10

CPC classification number: H01P5/10

Abstract: Provided are assemblies and processes for efficiently coupling wideband differential signals between balanced and unbalanced circuits. The assemblies include a broadband balun having an unbalanced transmission line portion, a balanced transmission line portion, and a transition region disposed between the unbalanced and balanced transmission line portions. The unbalanced transmission line portion includes at least one ground and a pair of conductive signal traces, each isolated from ground. The balanced portion does not include an analog ground. The transition region effectively terminates the analog ground, while also smoothly transitioning or otherwise shaping transverse electric field distributions between the balanced and unbalanced portions. Beneficially, the balun is free from resonant features that would otherwise limit operating bandwidth, allowing it to operate over a wide bandwidth of 10:1 or greater. Assemblies can include RF chokes with back-to-back baluns, and other elements, such as balanced filters, and also can be implemented as integrated circuits.

Abstract translation: 提供了用于在平衡电路和不平衡电路之间有效耦合宽带差分信号的组件和过程。 组件包括具有不平衡传输线部分，平衡传输线部分和设置在不平衡和平衡传输线部分之间的过渡区域的宽带平衡 - 不平衡变压器。 不平衡传输线部分包括至少一个接地和一对导电信号迹线，每个与地面隔离。 平衡部分不包括模拟地。 过渡区域有效地终止模拟地，同时也平滑地过渡或以其他方式整形平衡和不平衡部分之间的横向电场分布。 有利的是，平衡 - 不平衡转换器没有谐振特性，否则会限制工作带宽，允许其在10：1或更大的宽带宽下工作。 组件可以包括具有背对背平衡 - 不平衡变换器的RF扼流器，以及诸如平衡滤波器的其它元件，并且还可以实现为集成电路。