MATCHING CIRCUIT, WIRING BOARD, TRANSMITTER HAVING MATCHING CIRCUIT, RECEIVER, TRANSCEIVER AND RADAR APPARATUS

摘要

Provided are a matching circuit which can restrain impedance mismatch from occurring even if variations occur in pattern dimensions; and a wiring board.  Also provided are a transmitter; a receiver; a transceiver; and a radar apparatus, each of which has a stable characteristic because of having the matching circuit.  The characteristic impedance of a first transmission path (22) including a connecting part (7) is changed between a reflection source (21) including a stub part (6) and a bonding wire (3) that is a load.  Impedance change can be achieved by changing the distance between the connecting part (7) and a rear-surface conductive layer (9a) coupled to the connecting part (7) and further by changing the distance from the stub part (6) and a transmission path part (5) to an inner conductive layer (10) coupled to the stub part (6) and transmission path part (5).