The invention is claimed as follows:1. An antenna, comprising:a pole, having a shape with a maximum width dimension larger than a maximum height dimension;a first ground plane and a second ground plane, each having a tapering shape, with:a first side parallel to the width dimension of the pole;a second side parallel to the width dimension of the pole, located further from the pole than the first side is located relative to the pole, and being longer than the first side;a third side connected to the first side and the second side;a fourth side connect to the first side and the second side opposite to where the third side is connected respectively thereto, that tapers from the second side towards the first side; anda microstrip line, disposed between the third side of each of the first ground plane and the second ground plane, and connected to the pole to be centrally aligned to the pole where the maximum height dimension is defined.2. The antenna of claim 1, wherein the pole includes a monopole.3. The antenna of claim 1, wherein the microstrip line has a tapered shape toward to the pole.4. The antenna of claim 1, wherein the antenna is configured to detect partial discharge.5. The antenna of claim 1, wherein the antenna is directive in two directions.6. The antenna of claim 1, wherein a first distance between the microstrip line and the third side of the first ground plane tapers to be larger closer to the pole and smaller further from the pole, and wherein a second distance between the microstrip line and the third side of the second ground plane tapers to be larger closer to the pole and smaller further from the pole.7. The antenna of claim 1, wherein the first ground plane exhibits mirror symmetry to the second ground plane on an axis defined by the microstrip line.8. A detecting device, comprising:an oscilloscope, andan antenna connected with the oscilloscope, wherein the antenna includes:a pole, having a shape with a maximum width dimension larger than a maximum height dimension;a first ground plane and a second ground plane, each having a tapering shape, with:a first side parallel to the width dimension of the pole;a second side parallel to the width dimension of the pole, located further from the pole than the first side is located relative to the pole, and being longer than the first side;a third side connected to the first side and the second side;a fourth side connect to the first side and the second side opposite to where the third side is connected respectively thereto, that tapers from the second side towards the first side; anda microstrip line, disposed between the third side of each of the first ground plane and the second ground plane, and connected to the pole to be centrally aligned to the pole where the maximum height dimension is defined.9. The detecting device of claim 8, wherein the pole includes a monopole.10. The detecting device of claim 8, wherein the microstrip line has a tapered shape toward to the pole.11. The detecting device of claim 8, wherein the antenna is configured to detect partial discharge.12. The detecting device of claim 8, wherein the antenna is directive in two directions.13. The detecting device of claim 8, wherein a first distance between the microstrip line and the third side of the first ground plane tapers to be larger closer to the pole and smaller further from the pole, and wherein a second distance between the microstrip line and the third side of the second ground plane tapers to be larger closer to the pole and smaller further from the pole.14. The detecting device of claim 8, wherein the first ground plane exhibits mirror symmetry to the second ground plane on an axis defined by the microstrip line.15. An antenna, comprising:a pole, having a half-elliptical shape, with a width dimension larger than a height dimension;a ground plane, having a tapering shape, with:a first side parallel to the width dimension of the pole;a second side parallel to the width dimension of the pole, located further from the pole than the first side is located relative to the pole, and being longer than the first side;a third side connected to the first side and the second side;a fourth side connect to the first side and the second side opposite to where the third side is connected respectively thereto, that tapers the ground plane from the second side towards the first side; anda microstrip line, connected on a first send to the pole where the half-elliptical shape terminates at a straight edge, the microstrip line running to a second end, wherein a distance between the microstrip line and the third side of the ground plane tapers to be larger closer to the pole and smaller further from the pole.16. The antenna of claim 15, wherein the pole includes a monopole.17. The antenna of claim 15, wherein the antenna is directive in one direction.18. The antenna of claim 15, wherein the antenna is configured to detect partial discharge.
