Method for electrical testing of quality of e.g. organic circuit board to be used in mobile telephone, involves determining whether board is defective by comparing property of filter with construction value

摘要

#CMT# #/CMT# The method involves applying alternating current (AC) on a circuit board, in which a passive device is embedded. A property of the filter is measured for applied AC voltage. A determination is made that whether the circuit board is defective by comparing the measured property with a construction value. Total impedance generated in a line by the AC voltage is measured, where the passive device is connected to the line. The measured total impedance is compared with the construction value, and the line is tested to determine whether the line comprises interruption or short circuit. #CMT# : #/CMT# The property of the filter is selected from insertion loss, bandwidth, skirt property, noise level and scattering parameter. #CMT#USE : #/CMT# Method for electrical testing quality of a circuit board e.g. organic circuit board and printed circuit board, to be used in an electronic product i.e. mobile telephone. #CMT#ADVANTAGE : #/CMT# The method enables testing quality of the circuit board even when any of the passive devices embedded in the circuit board is defective. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a circuit diagram of a testing device for different test levels for electrical testing of efficiency of a circuit board.