Abstract: Embodiment high-frequency radiator includes two plus and minus 45-degree single-polarized radiators. The single-polarized radiator includes a radiation arm, a balun, a feeder circuit, a filter, and a ground plane. The radiation arm and the balun are electrically connected. The feeder circuit and the balun are separately disposed on two surfaces of a first dielectric plate that is placed vertically. The ground plane is disposed on a downward surface of a second dielectric plate that is placed horizontally. The first dielectric plate is vertically disposed on the second dielectric plate, and the filter includes a capacitor branch and an inductor branch. The inductor branch is disposed on a same surface of the first dielectric plate as the balun, the inductor branch is separately electrically connected to the balun and the ground plane, and the capacitor branch is coupled to the ground plane.

Abstract: Embodiment high-frequency radiator includes two plus and minus 45-degree single-polarized radiators. The single-polarized radiator includes a radiation arm, a balun, a feeder circuit, a filter, and a ground plane. The radiation arm and the balun are electrically connected. The feeder circuit and the balun are separately disposed on two surfaces of a first dielectric plate that is placed vertically. The ground plane is disposed on a downward surface of a second dielectric plate that is placed horizontally. The first dielectric plate is vertically disposed on the second dielectric plate, and the filter includes a capacitor branch and an inductor branch. The inductor branch is disposed on a same surface of the first dielectric plate as the balun, the inductor branch is separately electrically connected to the balun and the ground plane, and the capacitor branch is coupled to the ground plane.

Abstract: The invention discloses a broadband dual-band base station antenna array with high out-of-band isolation, having at least one high-frequency antenna unit, one low-frequency antenna unit and a floor; when there is one high-frequency antenna unit, it is placed on one side of the floor; when there are more than one high-frequency antenna units, they are placed on both sides of the floor. The high-frequency antenna unit includes multiple dipole arms and a balun, wherein the dipole arms are connected by distributed inductor and fed through the balun; the low-frequency antenna unit including multiple dipole arms and a balun is placed on the middle of the floor, wherein the dipole arms are connected by distributed capacitor and fed through the balun. The balun is provided with a feeder and a H-shape microstrip line. The H-shape microstrip line connects with the feeder.

Abstract: The invention discloses a broadband dual-band base station antenna array with high out-of-band isolation, having at least one high-frequency antenna unit, one low-frequency antenna unit and a floor; when there is one high-frequency antenna unit, it is placed on one side of the floor; when there are more than one high-frequency antenna units, they are placed on both sides of the floor. The high-frequency antenna unit includes multiple dipole arms and a balun, wherein the dipole arms are connected by distributed inductor and fed through the balun; the low-frequency antenna unit including multiple dipole arms and a balun is placed on the middle of the floor, wherein the dipole arms are connected by distributed capacitor and fed through the balun. The balun is provided with a feeder and a H-shape microstrip line. The H-shape microstrip line connects with the feeder.

Abstract: A wireless power transfer coil system using offset of electric and magnetic coupling for frequency splitting suppression, which includes one transmitting coil, one receiving coil and four loaded annular metal sheets, is provided. A first annular metal sheet and a second annular metal sheets of the four loaded annular metal sheets are loaded between the transmitting coil and a third and a fourth annular metal sheets of the four loaded annular metal sheets are loaded between the receiving coil to expand a variable distance range of a power transmission. The coil system enables the coils to worked in a state of magnetic and electric coupling. During a process of moving from a long distance to a short distance, a coupling coefficient between the coils changes gradually, but a low coupling degree is still maintained so that a phenomenon of frequency splitting is not produced, thereby maintaining a high-efficiency power transmission within the system.

Abstract: A wireless power transfer coil system using offset of electric and magnetic coupling for frequency splitting suppression, which includes one transmitting coil, one receiving coil and four loaded annular metal sheets, is provided. A first annular metal sheet and a second annular metal sheets of the four loaded annular metal sheets are loaded between the transmitting coil and a third and a fourth annular metal sheets of the four loaded annular metal sheets are loaded between the receiving coil to expand a variable distance range of a power transmission. The coil system enables the coils to worked in a state of magnetic and electric coupling. During a process of moving from a long distance to a short distance, a coupling coefficient between the coils changes gradually, but a low coupling degree is still maintained so that a phenomenon of frequency splitting is not produced, thereby maintaining a high-efficiency power transmission within the system.