Cable connection structure used in vehicle antenna device

A cable connection structure used in a vehicle antenna device, the cable connection structure comprising:

• a connection terminal attached to a braided wire of a coaxial cable having a core wire as a signal line, the braded wire as a ground line, and a protective outer cover constituting an outermost sheath;
• a circuit board having a signal line connection hole for the core wire of the coaxial cable and a ground line connection hole for the connection terminal;
• a base plate on which the circuit board is placed, having a cable insertion hole through which the coaxial cable is inserted;
• a positioning abutting part for determining the position of the circuit board on the base plate;
• and
• a cable clamp grasping the protective outer cover of the coaxial cable, holding the core wire so as to be exposed at a predetermined height position toward the circuit board side for being electrically connected to the signal line connection hole of the circuit board, and holding the connection terminal so as to be exposed at a predetermined height position toward the circuit board side for being electrically connected to the ground line connection hole of the circuit board.