Method and apparatus for testing circuit boards
First Claim
1. Apparatus for testing a circuit board including at least one conductor path, comprising:
- a transmission unit having an antenna for transmitting electromagnetic wave signal to the circuit board, wherein said antenna has a loop coil shape, and the circuit board is positioned in the antenna and perpendicular to the magnetic field induced by the electromagnetic wave signal transmitted from the antenna;
a detecting unit for detecting the electromagnetic wave signal received from the conductor path of the circuit board; and
a compare unit for comparing the electromagnetic wave signal received from the conductor path with reference data corresponding to the conductor path so as to detect a defect in the circuit board.
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Accused Products
Abstract
The invention provides a method of apparatus for testing circuit boards which does not require any inner wide power plane so as to detect an open circuit defect and/or a short circuit defect in a conductor path network formed in the circuit board quickly and accurately. An apparatus for testing a circuit board according to the present invention includes a transmission unit (2) for transmitting electromagnetic (radio) wave signal by way of an antenna (1) to a circuit board (3) to be tested, a detecting unit (3) for detecting signal received by a conductor path (4) of the circuit board (3) by using the conductor path (4) as a receiving antenna, and compare unit (8) for determining whether or not there is an open circuit defect or a short circuit defect in the conductor path (4) by comparing the detected signal with reference data of corresponding to a conductor path not including any defect.
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Citations
12 Claims
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1. Apparatus for testing a circuit board including at least one conductor path, comprising:
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a transmission unit having an antenna for transmitting electromagnetic wave signal to the circuit board, wherein said antenna has a loop coil shape, and the circuit board is positioned in the antenna and perpendicular to the magnetic field induced by the electromagnetic wave signal transmitted from the antenna; a detecting unit for detecting the electromagnetic wave signal received from the conductor path of the circuit board; and a compare unit for comparing the electromagnetic wave signal received from the conductor path with reference data corresponding to the conductor path so as to detect a defect in the circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification