Abstract: A slot antenna includes a dielectric substrate, and an antenna body that is formed on the dielectric substrate. The antenna body defines an open loop antenna slot that has first and second ends, and an open loop perturbation slot that extends inwardly from the open loop antenna slot, and that has first and second ends, each of which is connected to a respective one of the first and second ends of the open loop antenna slot.

Abstract: A fractal dipole antenna includes a dielectric substrate, first and second closed-loop radiating elements, each of which is formed on the dielectric substrate, and first and second fractal radiating elements, each of which is formed on the dielectric substrate and is surrounded by and connected to a respective one of the first and second closed-loop radiating elements.

Abstract: A fractal dipole antenna includes a dielectric substrate, first and second closed-loop radiating elements, each of which is formed on the dielectric substrate, and first and second fractal radiating elements, each of which is formed on the dielectric substrate and is surrounded by and connected to a respective one of the first and second closed-loop radiating elements.

Abstract: A circularly polarized antenna includes a dielectric substrate, a closed-loop radiating element, a micro-strip radiating element, a feeding element, and a grounding element. The closed-loop radiating element is formed on a first surface of the dielectric substrate. The micro-strip radiating element is formed on the first surface of the dielectric substrate, is surrounded by the closed-loop radiating element, and is coupled to the closed-loop radiating element. The feeding element is formed on the first surface of the dielectric substrate, is surrounded by the closed-loop radiating element, and is coupled to the micro-strip radiating element. The grounding element is formed on a second surface of the dielectric substrate.

Abstract: A circularly polarized antenna includes first and second dielectric substrates, a grounding element, a feeding element, a coupling element, and a close-loop radiating element. The grounding element is formed on a first surface of the first dielectric substrate. The feeding element is formed on a second surface of the first dielectric substrate. The second dielectric substrate is disposed on the second surface of the first dielectric substrate and overlaps the feeding element. The coupling element is formed on the second dielectric substrate. The close-loop radiating element is formed on the second dielectric substrate.

Abstract: An exposing machine of the present invention consists of a plurality of ultraviolet light tubes arranged on light generation assemblies. Each tube of the ultraviolet tubes is mutually parallel and is in parallel with a printed circuit board. Accordingly, a uniformly parallel projection light can be generated for the entire printed circuit board to achieve a best exposing effect. In addition, each ultraviolet light tube which consumes power between 40 W and 150 W can generate a ultraviolet ray with an energy wavelength between 360 and 440, which is not only best suited for an exposing operation for a printed circuit board, but also can decrease a working temperature from an entire light generator assembly, along with a longer lifetime for each ultraviolet tube, thereby significantly reducing a manufacturing and maintenance cost for an exposing machine.

Abstract: A current equalizer assembly for LCD backlight panel comprises at least a differential current choke and at least a capacitor. The capacitor is arranged striding on a terminal (B) at a primary coil and on a terminal (D) at a secondary coil of the differential current choke so as to equalize the current flowing through every cold cathode fluorescent lamp (CCFL) connected to the differential current choke and the lightness thereof accordingly. Moreover, the capacitance of the stridden capacitor is replaceable by the intrinsic stray capacitance when the inductance of the differential current choke is properly selected.