Abstract: An optical path folding element includes a main body, a light absorption film layer and a matte structure. The main body has optical surface including an incident surface, a reflective surface and an emitting surface. A light enters into the optical folding element through the incident surface. The reflective surface reflects the light so as to change a traveling direction thereof. The light exits the optical folding element through the emitting surface. The light absorbing film layer is configured to reduce reflectance and provided adjacent to at least part of the optical surface, and the light absorbing film layer is in physical contact with the main body. The matte structure is disposed adjacent to at least part of the optical surface. The matte structure provides an undulating profile on a surface of the optical path folding element, and the matte structure is formed in one-piece with the main body.

Abstract: An antenna system includes a first antenna, a second antenna, and a third antenna. The third antenna is disposed between the first antenna and the second antenna. Both the first antenna and the second antenna operate in a first frequency band. The third antenna operates in a second frequency band which is different from the first frequency band. The first antenna, the second antenna, and the third antenna are all disposed on the same plane.

Abstract: A antenna waveguide for an antenna module includes a first surface formed in a first plane, a second plane adjacent to the first plane, a third plane adjacent to the second surface, not adjacent to the first surface, and parallel to the first surface, and a fourth surface adjacent to the first surface and the third surface, and not adjacent to the second surface. The antenna module includes an antenna, wherein a first size of the first surface along a direction of the antenna is substantially equal to a third quarter wavelength of a radio-frequency signal of the antenna, the antenna is formed in a second plane, and projections of the second surface and the fourth surface onto a third plane are perpendicular to the first plane and the second plane.

Abstract: An antenna system includes a first antenna, a second antenna, and a third antenna. The third antenna is disposed between the first antenna and the second antenna. Both the first antenna and the second antenna operate in a first frequency band. The third antenna operates in a second frequency band which is different from the first frequency band. The first antenna, the second antenna, and the third antenna are all disposed on the same plane.

Abstract: A antenna waveguide for an antenna module includes a first surface formed in a first plane, a second plane adjacent to the first plane, a third plane adjacent to the second surface, not adjacent to the first surface, and parallel to the first surface, and a fourth surface adjacent to the first surface and the third surface, and not adjacent to the second surface. The antenna module includes an antenna, wherein a first size of the first surface along a direction of the antenna is substantially equal to a third quarter wavelength of a radio-frequency signal of the antenna, the antenna is formed in a second plane, and projections of the second surface and the fourth surface onto a third plane are perpendicular to the first plane and the second plane.

Abstract: A drinking cup lid, comprising: a center cover portion; a rib ring formed at the external circumferential edge of the center cover portion, the rib ring having a drinking recess, the external edge of the drinking recess being open while an insertion opening is disposed at the internal edge thereof, the bottom surface of the drinking recess being provided with a drinking opening; a vent hole formed in the center cover portion or in the rib ring; a snap ring portion formed at the external circumferential edge of the rib ring for a snap fit to the drinking cup; and a plug connected by a flexible strip in a hanging way to the external circumferential edge of the snap ring portion, the plug having a plug portion, a hand-held portion and an insert portion. Before use, the insert portion of the plug is fitted first into the insertion opening. Thereafter, the plug portion is fitted to the drinking opening. In this way, the laborious plug-and-pull problem of the conventional splash proof plug is resolved.

Abstract: A drinking cup lid, comprising: a center cover portion; a rib ring formed at the external circumferential edge of the center cover portion, the rib ring having a drinking recess, the external edge of the drinking recess being open while an insertion opening is disposed at the internal edge thereof, the bottom surface of the drinking recess being provided with a drinking opening; a vent hole formed in the center cover portion or in the rib ring; a snap ring portion formed at the external circumferential edge of the rib ring for a snap fit to the drinking cup; and a plug connected by a flexible strip in a hanging way to the external circumferential edge of the snap ring portion, the plug having a plug portion, a hand-held portion and an insert portion. Before use, the insert portion of the plug is fitted first into the insertion opening. Thereafter, the plug portion is fitted to the drinking opening. In this way, the laborious plug-and-pull problem of the conventional splash proof plug is resolved.

Abstract: An antenna array is provided for monitoring an object. The antenna array includes an emitting antenna module, a first receiving antenna module, a second receiving antenna module and a third receiving antenna module. The emitting antenna module emits a detecting signal, wherein the detecting signal contacts the object, and is reflected by the object as a return signal. The first receiving antenna module receives the return signal. The second receiving antenna module receives the return signal. The third receiving antenna module receives the return signal, wherein any one of the antenna modules has a phase difference of 90 degrees with the nearest neighboring antenna module.

Abstract: An antenna includes a grounding conductor, a feed conductor, a resonant conductor, and a radioactive conductor. The feed conductor is disposed apart from the grounding conductor. The resonant conductor having a resonant width is disposed along the grounding conductor and disposed apart from the grounding conductor by a resonant-ground distance. The resonant conductor connects to the feed conductor. The radioactive conductor has a radioactive width. One end of the radioactive conductor connects to one end of the resonant conductor with the feed conductor, and another end of the radioactive conductor is disposed apart from the grounding conductor. The radioactive conductor is disposed along the resonant conductor and disposed apart from the resonant conductor by a resonant-radioactive distance. The resonant conductor is positioned between the radioactive conductor and the grounding conductor.

Abstract: An antenna array is provided for monitoring an object. The antenna array includes an emitting antenna module, a first receiving antenna module, a second receiving antenna module and a third receiving antenna module. The emitting antenna module emits a detecting signal, wherein the detecting signal contacts the object, and is reflected by the object as a return signal. The first receiving antenna module receives the return signal. The second receiving antenna module receives the return signal. The third receiving antenna module receives the return signal, wherein any one of the antenna modules has a phase difference of 90 degrees with the nearest neighboring antenna module.

Abstract: A wideband antenna includes a radiation element, first and second extension elements, first and second reflection elements, and a feeding element. The radiation element is symmetric to a reference direction and has a top edge, a bottom edge, a first side edge, and a second side edge. A width of the radiation element gradually increases along the reference direction. The first and second extension elements are extended toward the reference direction respectively from two ends of the top edge and are mirror-symmetric to each other with respect to the reference direction. Widths of the first and second extension elements gradually decrease along the reference direction. The first and second reflection elements are respectively opposite to the first and second side edges and are mirror-symmetric to each other with respect to the reference direction. The feeding element is electrically connected to the bottom edge and has a feeding point.

Abstract: A multi-band antenna is disposed on a circuit board having a feeding line. The feeding line has a signal-transmitting end and a ground end. The multi-band antenna includes a feeding portion coupled to the signal-transmitting end, a ground portion coupled to the ground end, an intermediate-frequency sheet section extending from the feeding portion toward a first direction, a low-frequency arm, and a high-frequency arm. The low-frequency arm extends from a side of the intermediate-frequency sheet section toward a second direction opposite to the first direction. The high-frequency arm includes first and second bending portions. The first bending portion extends from the side of the intermediate-frequency sheet section toward the second direction so as to connect to the ground portion. The first bending portion has a recess. The second bending portion extends into the recess for transceiving signals within a first frequency band cooperatively with the first bending portion.

Abstract: An antenna testing unit is provided. The antenna testing unit includes a ground element and a radiator. The radiator includes a body, a first radiator unit and a second radiator unit. The body corresponds to the ground element. The first radiator unit is connected to the body, comprising a first wing shaped portion and a second wing shaped portion, wherein a shape of the first wing shaped portion is symmetrical to a shape of the second wing shaped portion. The second radiator unit is connected to the body, and comprises a first section and a second section, wherein the first section extends toward the first wing shaped portion, and the second section extends toward the second wing shaped portion.

Abstract: A wideband antenna includes a radiation element, first and second extension elements, first and second reflection elements, and a feeding element. The radiation element is symmetric to a reference direction and has a top edge, a bottom edge, a first side edge, and a second side edge. A width of the radiation element gradually increases along the reference direction. The first and second extension elements are extended toward the reference direction respectively from two ends of the top edge and are mirror-symmetric to each other with respect to the reference direction. Widths of the first and second extension elements gradually decrease along the reference direction. The first and second reflection elements are respectively opposite to the first and second side edges and are mirror-symmetric to each other with respect to the reference direction. The feeding element is electrically connected to the bottom edge and has a feeding point.

Abstract: A sensing element suitable for sensing an interference signal radiated by an object under test is provided, including a substrate, a ground plane and a sensing antenna. The ground plane is disposed on a first surface of the substrate. The sensing antenna is disposed on the first surface of the substrate and is located on a first side of the ground plane. The sensing antenna and the ground plane are separated by a preset distance. Besides, the sensing antenna is electrically connected to the ground plane through a coaxial wire and receives the interference signal through the ground plane.

Abstract: An antenna structure is provided. The antenna structure includes a circular area, a feed point, a first radiator and a second radiator. The circular area includes a first region and a second region. The feed point is disposed at a center of the circular area. The first radiator is coupled to the feed point, and winds outwardly in one direction in the shape of a semicircular arch in the first region. The second radiator is coupled to the feed point, and winds outwardly in an opposite direction to windings of the first radiator in the shape of a semicircular arch in the second region.

Abstract: An antenna includes a grounding conductor, a feed conductor, a resonant conductor, and a radioactive conductor. The feed conductor is disposed apart from the grounding conductor. The resonant conductor having a resonant width is disposed along the grounding conductor and disposed apart from the grounding conductor by a resonant-ground distance. The resonant conductor connects to the feed conductor. The radioactive conductor has a radioactive width. One end of the radioactive conductor connects to one end of the resonant conductor with the feed conductor, and another end of the radioactive conductor is disposed apart from the grounding conductor. The radioactive conductor is disposed along the resonant conductor and disposed apart from the resonant conductor by a resonant-radioactive distance. The resonant conductor is positioned between the radioactive conductor and the grounding conductor.

Abstract: A multi-band antenna is disposed on a circuit board having a feeding line. The feeding line has a signal-transmitting end and a ground end. The multi-band antenna includes a feeding portion coupled to the signal-transmitting end, a ground portion coupled to the ground end, an intermediate-frequency sheet section extending from the feeding portion toward a first direction, a low-frequency arm, and a high-frequency arm. The low-frequency arm extends from a side of the intermediate-frequency sheet section toward a second direction opposite to the first direction. The high-frequency arm includes first and second bending portions. The first bending portion extends from the side of the intermediate-frequency sheet section toward the second direction so as to connect to the ground portion. The first bending portion has a recess. The second bending portion extends into the recess for transceiving signals within a first frequency band cooperatively with the first bending portion.

Abstract: An improved method of loop antenna and improved loop antenna thereof are provided, the method is used to generate an antenna resonant frequency for a conformed specific communication by modifying a resonant wavelength of a basic loop antenna. The improved method of loop antenna includes the following steps: connecting a first antenna radiator to a resonant point of the basic loop antenna electrically, and using an additional length from the connected first antenna radiator additional length to increase the resonant wavelength of the basic loop antenna, in order to generate an antenna resonant frequency conformed to the specific communication system.

Abstract: An antenna for transmitting a wireless signal is provided. The antenna includes a radiator and a ground structure. The ground structure surrounds the radiator. The ground structure includes a low-band spiral portion, a band separation portion and a high-band spiral portion. The low-band spiral portion and the high-band spiral portion are respectively connected to two ends of the band separation portion.