Unlock instant, AI-driven research and patent intelligence for your innovation.

Test boards for printed circuit boards in the field of wireless systems

A technology of printed circuit boards and test boards, which is applied to circuits, electrical components, connection devices, etc., and can solve problems such as the inability to apply WiFi systems

Inactive Publication Date: 2016-12-21
THOMSON LICENSING SA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution can only operate with a limited frequency bandwidth and cannot be applied to WiFi systems operating in the 5GHz band, or even more so in two different frequency bands, namely the 2.4 and 5GHz bands

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test boards for printed circuit boards in the field of wireless systems
  • Test boards for printed circuit boards in the field of wireless systems
  • Test boards for printed circuit boards in the field of wireless systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] First of all, it should be pointed out that the present invention implements the operation on the test board, and the electromagnetic coupling between the slot / line and the printed line is known as Knorr coupling (Knorr coupling). In this case, the microstrip lines printed on one side of the multilayer substrate span across the slot-lines implemented in the opposite side of the substrate. The microstrip line has one open-circuited end, positioned at a distance of λ / 4 from the intersection point (λ is the wavelength of the line at the operating frequency), which means that the microstrip line sets a short-circuit plane at this point. The slot-line is short-circuited at a distance of λ' / 4 from the intersection point (λ' is the wavelength of the slot), which means that the slot-line sets an open plane at the intersection point, which makes it possible to go from the microstrip mode to the slot mode Efficiently transmit microwave signals and vice versa.

[0029] Having sai...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a test card for a printed circuit card comprising a radio frequency circuit connected by a transmission line (18) to an antenna (3), characterized in that the test card consists of at least one dielectric Substrate layer (10) consisting of a substrate provided on one surface with a first conductive area receiving a test connector, said first conductive area being connected to a second conductive area on the opposite side of said substrate , said test card comprising: at least one power line (15), said at least one power line (15) being connected to said first conductive area and forming at least one electromagnetic coupling that can form a line / gap type at said antenna level a component; and a component (16) for returning quasi-zero impedance at the level of the junction.

Description

technical field [0001] The invention relates to a test board for printed circuit boards in the field of wireless systems. The invention also relates to a printed circuit board capable of using said test board. Background technique [0002] Printed circuit boards, known as PCBs, are used in wireless systems and generally comprise two large sections, a transmitter / receiver and an "antenna" section. During mass production of such a system, it is difficult to properly check the performance of the transmitter / receiver circuit via the antenna. As a result, switchable test connectors are used which are soldered to the circuit surface between the transmitter / receiver section and the antenna section. The test connectors currently used are surface mount devices of the SMC type. The connector is mechanically switchable and operates in such a way that in the mode of operation the connector is short-circuited and the signal reaching the transmitter / receiver is connected directly to th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/02H01P5/10
CPCH01P5/02H01P5/026H01P5/1007
Inventor D.洛海恩童P.米纳德A.洛齐尔
Owner THOMSON LICENSING SA