Characterization of Flex to Printed Circuit Board Interconnections Using Insertion Connectors

C. Person, D. Nguyen, J. Coupez, P. Minard, D. L. Tong, P. Borel, D. Izoard
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Abstract

Advanced internet and multimedia set-top boxes are today massively based on 4*4 MIMO systems, with multi-sub-bands standards (WIFI bands, LTE, Bluetooth, …). Interconnections between the numerous access ports of different radio chipsets mounted on a main PCB (Printed Circuit Board) and multiple antennas spatially distributed on the plastic casing become therefore a great challenge for cost and performances motivations. The flex technology, based on well-controlled and low cost process, brings new functionalities and opportunities for assembling sub-systems, under compactness considerations, as well as electrical performances improvement. In this paper, we discuss about the characterisation of connectors used for flexible printed circuit to a main PCB interconnections. The choice of the connectors is a critical issue, and must be properly done considering both local ground and signal interconnections constraints. Simulation and measurements are performed up to 15Ghz covering WIFI bands
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使用插入连接器的柔性与印刷电路板互连的特性
今天,先进的互联网和多媒体机顶盒大量基于4*4 MIMO系统,具有多子频段标准(WIFI频段,LTE,蓝牙等)。因此,安装在主PCB(印刷电路板)上的不同无线电芯片组的众多接入端口之间的互连以及空间上分布在塑料外壳上的多个天线之间的互连成为成本和性能动机的巨大挑战。基于良好控制和低成本工艺的柔性技术,在考虑紧凑性和电气性能改善的情况下,为装配子系统带来了新的功能和机会。本文讨论了用于柔性印刷电路与主PCB互连的连接器的特性。连接器的选择是一个关键问题,必须考虑到本地接地和信号互连的限制。模拟和测量在15Ghz范围内进行,覆盖WIFI频段
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