High-frequency magnetic field generating device
A high-frequency magnetic field generating device includes two coils arranged with a predetermined gap in parallel with each other, the two coils (a) in between which electron spin resonance material is arranged or (b) arranged at one side from electron spin resonance material; a high-frequency power supply that generates microwave current that flows in the two coils; and a transmission line part connected to the two coils, that sets a current distribution so as to locate the two coils at positions other than a node of a stationary wave.
1. A high-frequency magnetic field generating device, comprising:
two coils arranged with a predetermined gap in parallel with each other, the two coils (a) in between which electron spin resonance material is arranged or (b) arranged at one side from electron spin resonance material;
a high-frequency power supply that generates microwave current that flows in the two coils; and
a transmission line part connected to the two coils, that sets a current distribution so as to locate the two coils at positions other than a node of a stationary wave,
wherein:
the transmission line part is two transmission lines;
the two transmission lines are connected to the two coils, respectively;
one-side ends of the two transmission lines are open-circuited or are connected to a high impedance circuit for a frequency of the microwave current;
other-side ends of the two transmission lines are connected to one-side ends of the two coils; and
the microwave current from the high-frequency power supply flows into other-side ends of the two coils.
2. The high-frequency magnetic field generating device according to claim 1 , further comprising an impedance matching unit in between (a) the high-frequency power supply and (b) the two coils or the transmission line part.
3. The high-frequency magnetic field generating device according to claim 1 , further comprising a circuit board;
wherein the two coils are arranged on one surface of the circuit board; and
the transmission line part is line members that have partially-cutted-off ring shapes and are arranged on the other surface of the circuit board.
4. The high-frequency magnetic field generating device according to claim 1 , further comprising a circuit board;
wherein the transmission line part is a wiring pattern on the circuit board.