Abstract: A dual polarization log-periodic antenna apparatus includes a log-periodic antenna and a conical reflector. The conical reflector is arranged below the log-periodic antenna. The log-periodic antenna is configured to transmit a plurality of radio waves. The conical reflector is configured to reflect the radio waves transmitted by the log-periodic antenna.

Abstract: A dual polarization log-periodic antenna apparatus includes a log-periodic antenna and a conical reflector. The conical reflector is arranged below the log-periodic antenna. The log-periodic antenna is configured to transmit a plurality of radio waves. The conical reflector is configured to reflect the radio waves transmitted by the log-periodic antenna.

Abstract: An inverted-F antenna includes a radiation element, a ground element, a loop conductive pin, a signal feed-in portion, and a signal line. The antenna is designed as the signal feed-in portion and the ground portion sharing a single pin, thus solving the problem of the conventional inverted-F antenna having complicated components and increased cost due to using two independent components in parallel including a conductive pin and a signal feed-in portion for grounding and receiving feed-in signals.

Abstract: An ultra-wide-band antenna includes a radiation element, an insulating substrate, a ground element, and a signal line. The insulating substrate is fixed on the ground element, the radiation element is disposed on the insulating substrate for receiving and transmitting a radio signal; the signal line is connected to the radiation element and contacting the ground element for feeding a signal to the radiation element and receiving the radio signal received by the radiation element. The ground element is used to replace a large-area conductive plate of a conventional ultra-wide-band antenna, so as to reduce the volume of the ultra-wide-band antenna, and thus the ultra-wide-band antenna can be placed into an electronic device while occupying smaller space and capable of being miniaturized, thereby realizing a miniaturized ultra-wide-band electronic device.

Abstract: A multimode antenna that integrates antennae of at least three modes includes antenna radiation elements of at least three modes and a common ground element. In conventional wireless communication devices, in order to achieve the multiplexing effect, a plurality of antennae is built therein, which cannot meet the requirements for both multiplexing and small size. The multimode antenna integrates antennae of a plurality of modes together and shares one ground element, which not only reduces the volume of the antenna, but also achieves a multimode antenna for a multiplex device.

Abstract: An antenna structure including a ground plate, a hollow bolt, and a conductive conical dome is provided. The hollow bolt passes through the ground plate, and a signal wire is laid in the hollow bolt. An insulator is disposed between the signal wire and the hollow bolt for providing electrical isolation therebetween. The conductive conical dome is connected with one end of the signal wire. The hollow bolt and a nut are provided to fix the antenna on a wall or a ceiling. Since the signal wire is laid in the hollow bolt, the signal wire can be connected to a signal source only by connecting a signal cable to the hollow bolt.

Abstract: A dual-frequency high-gain antenna is provided, which includes: a diplexer loop portion disposed at the center of the antenna substrate for receiving a feed signal; two single-frequency radiation units, symmetrically connected to two sides of the diplexer loop portion for radiating a radio-frequency signal corresponding to a first frequency value of the feed signal; and two dual-frequency radiation units, respectively connected to each single-frequency radiation portion for radiating radio-frequency signals corresponding to the first frequency value and a second frequency value of the feed signal.

Abstract: A symmetric-slot monopole antenna is provided, including a metallic board. Formed on the metallic board are a ground connection part to provide a ground circuit for the monopole antenna and a radiation part formed integrally on the ground connection part to receive and radiate signals transmitted through a signal cable.

Abstract: A dual-frequency high-gain antenna is provided, which includes: a diplexer loop portion disposed at the center of the antenna substrate for receiving a feed signal; two single-frequency radiation units, symmetrically connected to two sides of the diplexer loop portion for radiating a radio-frequency signal corresponding to a first frequency value of the feed signal; and two dual-frequency radiation units, respectively connected to each single-frequency radiation portion for radiating radio-frequency signals corresponding to the first frequency value and a second frequency value of the feed signal.

Abstract: A dual-band multi-mode array antenna is provided, including an antenna substrate with antenna units each of which having a feeding via; and a conductive substrate connected to the antenna substrate to form an angle in between. The conductive substrate has a symmetric feeding network disposed on a surface of the conductive substrate; and a first ground portion disposed on another surface of the conductive substrate. The symmetric feeding network and the first ground portion are electrically coupled to each of the antenna units through the feeding vias. Moreover, the antenna units are electrically coupled in parallel.

Abstract: An antenna structure including a ground plate, a hollow bolt, and a conductive conical dome is provided. The hollow bolt passes through the ground plate, and a signal wire is laid in the hollow bolt. An insulator is disposed between the signal wire and the hollow bolt for providing electrical isolation therebetween. The conductive conical dome is connected with one end of the signal wire. The hollow bolt and a nut are provided to fix the antenna on a wall or a ceiling. Since the signal wire is laid in the hollow bolt, the signal wire can be connected to a signal source only by connecting a signal cable to the hollow bolt.

Abstract: A bi-frequency symmetrical patch antenna includes two bi-frequency symmetrical radiation units, each having a first band radiation section and two second band radiation sections, to radiate a feed-in signal in a selected direction. Further, the antenna has a power distribution unit, to evenly distribute the feed-in power, corresponding to the feed-in signal, to each bi-frequency symmetrical radiation unit. The power distribution unit has two side arms connecting respectively to each bi-frequency symmetrical radiation unit to increase the bandwidth range of the bi-frequency antenna.

Abstract: A dual-band multi-mode array antenna is provided, including an antenna substrate with antenna units each of which having a feeding via; and a conductive substrate connected to the antenna substrate to form an angle in between. The conductive substrate has a symmetric feeding network disposed on a surface of the conductive substrate; and a first ground portion disposed on another surface of the conductive substrate. The symmetric feeding network and the first ground portion are electrically coupled to each of the antenna units through the feeding vias. Moreover, the antenna units are electrically coupled in parallel.

Abstract: A symmetric-slot monopole antenna is provided, including a metallic board. Formed on the metallic board are a ground connection part to provide a ground circuit for the monopole antenna and a radiation part formed integrally on the ground connection part to receive and radiate signals transmitted through a signal cable.

Abstract: A bi-frequency symmetrical patch antenna includes two bi-frequency symmetrical radiation units, each having a first band radiation section and two second band radiation sections, to radiate a feed-in signal in a selected direction. Further, the antenna has a power distribution unit, to evenly distribute the feed-in power, corresponding to the feed-in signal, to each bi-frequency symmetrical radiation unit. The power distribution unit has two side arms connecting respectively to each bi-frequency symmetrical radiation unit to increase the bandwidth range of the bi-frequency antenna.