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US 11,457,548 B2Granted
Electronic control device
AssigneeHitachi Astemo, Ltd.
InventorsMasahiro Toyama, Isao Hoda, Umberto Paoletti, Hideyuki Sakamoto
Life of this patent
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Abstract
An electronic control device includes: a housing accommodating a board on which an electronic component is mounted; and a guard pattern formed on an outer peripheral portion of the board. The guard pattern and a ground pattern of a circuit in the circuit board are connected to each other in a vicinity of an intermediate point of fixed positions where an upper portion of the housing and a lower portion of the housing are fixed to each other.
Claims12
An electronic control device comprising:
- a housing accommodating a board on which an electronic component is mounted, and
- a guard pattern formed on an outer peripheral portion of the board, wherein
- the guard pattern and a ground pattern of a circuit in the board are connected to each other in a vicinity of an intermediate point of fixed positions where an upper portion of the housing and a lower portion of the housing are fixed to each other;
- and
- the guard pattern is separated at a central portion of a side thereof on the outer peripheral portion of the board, and the central portion of the guard pattern is connected to each separated guard pattern via a resistor, and is connected to the ground pattern via a first capacitor.
2 more elements
An electronic control device comprising:
- a housing accommodating a board on which an electronic component is mounted, and
- a guard pattern formed on an outer peripheral portion of the board, wherein
- the guard pattern and a ground pattern of a circuit in the board are connected to each other such that an electric field distribution of resonance generated by a side length of the board and an electric field distribution of resonance generated by a side length of the housing form opposite electric field distributions;
- and
- the guard pattern is separated at a central portion of a side thereof on the outer peripheral portion of the board, and the central portion of the guard pattern is connected to each separated guard pattern via a resistor, and is connected to the ground pattern via a capacitor.
2 more elements
Dependencies are inferred from the claim text.