Connector apparatus and wireless transmission system

1. A connector apparatus, comprising:

a connector unit,

wherein the connector unit is provided at a terminal section of a feeder wire formed on a circuit board,

wherein the connector unit is detachable from an end section of a waveguide cable,

wherein the connector unit is structured to perform a signal transmission with the end section of the waveguide cable by an electromagnetic induction,

wherein an opening pattern section of the connector unit is formed on a first side of the circuit board,

wherein the opening pattern section is electrically connected, via a through hole, to a conductive pattern section formed on a second side of the circuit board, and

wherein the opening pattern section gradually widens from the terminal of the feeder wire toward an edge section of the circuit board.

2. The connector apparatus according to claim 1 , wherein the waveguide cable has a concave section formed at the end section thereof, and

wherein the connector unit can detachably fit in the concave section of the waveguide cable.

3. The connector apparatus according to claim 1 , wherein the opening pattern section is tapered.

4. The connector apparatus according to claim 1 ,

wherein the opening pattern section is structured such that a length from the terminal of the feeder wire to an opening end is determined based on a wavelength of radio waves in the circuit board.

5. The connector apparatus according to claim 4 ,

wherein the opening pattern section is structured such that the length from the terminal of the feeder wire to the opening end becomes substantially ¼ the wavelength of radio waves in the circuit board.

6. The connector apparatus according to claim 1 ,

wherein an opening pattern section is structured such that an opening width of an opening end is determined based on a size of the waveguide cable.

7. The connector apparatus according to claim 1 , wherein two feeder wires are provided, and wherein an interval between the two feeder wires and a line width of the feeder wires are set based on a characteristic impedance of the waveguide cable.

8. The connector apparatus according to claim 7 ,

wherein the interval between the two feeder wires and the line width of the feeder wires are set based on a thickness and relative permittivity of the circuit board.

9. The connector apparatus according to claim 7 , wherein the two feeder wires form a coplanar strip waveguide.

10. The connector apparatus according to claim 1 , wherein the feeder wire forms a microstrip line.

11. The connector apparatus according to claim 1 , wherein the connector unit transmits a high-frequency signal to the end section of the waveguide cable.

12. The connector apparatus according to claim 11 , wherein the high-frequency signal is a millimeter waveband signal.

13. A connector apparatus, comprising:

a first connector unit provided at an end section of a waveguide cable; and

a second connector unit that is provided at a terminal section of a feeder wire formed on a circuit board,

wherein the second connector unit is detachable from the first connector unit,

wherein the second connector unit includes an opening pattern section formed on a first side of a circuit board,

wherein the opening pattern section is electrically connected to a conductive pattern section formed on a second side of the circuit board by a through hole,

wherein the second connector unit is structured to perform a signal transmission with the first connector unit by an electromagnetic induction,

wherein the waveguide cable has a rectangular cross-section perpendicular to a waveguide direction, and two surfaces on a side of long sides of the cross-section are surfaces that intersect an electric field, and

wherein the second connector unit couples with the first connector unit such that a surface of the circuit board intersects the two surfaces on the side of the long sides.

14. The connector apparatus according to claim 13 ,

wherein the first connector unit is constituted of a concave section formed at the end section of the waveguide cable so as to intersect the two surfaces on the side of the long sides, and

wherein the at least a portion of the opening pattern section and the conductive pattern section of the second connector unit can detachably fit in the concave section of the waveguide cable.

15. The connector apparatus according to claim 13 ,

wherein the waveguide cable excluding an opening section that couples the first connector unit and the second connector unit is blocked by metal.

16. A wireless transmission system, comprising:

a sender that transmits a high-frequency signal;

a receiver that receives the high-frequency signal;

a waveguide cable that transmits the high-frequency signal between the sender and the receiver; and

a connector apparatus that connects at least one of the sender and the receiver with the waveguide cable,

the connector apparatus including:

a first connector unit provided at an end section of the waveguide cable; and

a second connector unit provided at a terminal section of a feeder wire formed on a circuit board, wherein the second connector unit includes:

an opening pattern section formed on a first side of the circuit board;

a conductive pattern section formed on a second side of the circuit board; and

a through hole, wherein the through hole electrically connects the opening pattern section and the conductive pattern section,

wherein the second conductor unit is detachable from the first connector unit in at least one of the sender and the receiver, and

wherein the second connector unit is structured to perform a signal transmission with the first connector unit by an electromagnetic induction,

wherein the feeder wire formed on the circuit board includes two wires, wherein the opening pattern section gradually widens from a first point adjacent a terminal inside edge of a first one of the two wires and a second point adjacent a terminal inside edge of a second one of the two wires toward an edge of the circuit board,

wherein the conductive pattern section includes a first conductive pattern section electrically connected by at least a first through hole to a first side of the opening pattern section, and

wherein the conductive pattern section includes a second conductive pattern section electrically connected by at least a second through hole to a second side of the opening pattern section.

17. The wireless transmission system according to claim 16 , wherein the high-frequency signal is a millimeter waveband signal.