Abstract: A cross-polarized antenna includes a substrate, a first impedance converter, a second impedance converter, a first cross-polarized antenna, and a second cross-polarized antenna. The first cross-polarized antenna has a first opening corresponding to a second opening in the second cross-polarized antenna, in which the two openings cross each other in space without contacting. The antenna is capable of receiving electromagnetic waves from different polarization directions effectively, thereby reducing the polarization loss. Besides, as the antenna is integrally formed, the manufacturing and assembling process thereof are simplified, thus lowering the manufacturing cost.

Abstract: A high-gain omnidirectional antenna module includes a base, an RF power amplifier, an omnidirectional antenna, a first signal line, and a second signal line. The base has a first surface and a second surface. The first signal line delivers a signal fed from outside to an input port of the RF power amplifier, and the second signal line connects an output port of the RF power amplifier and a feed portion of the antenna. The signal is amplified by the RF power amplifier, and thus the gain of the omnidirectional antenna is increased significantly. Therefore, the high-gain omnidirectional antenna effectively increases the transmission distance without increasing the size of the omnidirectional antenna.

Abstract: A high-gain multi-polarization antenna array module includes an antenna array and a plurality of Butler matrixes. The antenna array includes four antennas, and each antenna includes two feed portions. Each Butler matrix includes four 90° hybrid couplers, two phase shifters, four input ports, and four output ports, and the four output ports are respectively electrically connected to the four different antennas. The antenna array module integrates multi-polarization array antennas and base station antennas generating beam forming by using the Butler matrixes, such that beam shapes generated by the antenna array may be deflected according to a set specific angle, thereby greatly improving receiving quality of the antennas.

Abstract: A phase shifter includes a substrate, an input part, a plurality of first transmission lines, a plurality of second transmission lines, a coupling part, a controller, and a plurality of output parts. When a signal is fed in a first transmission line, the fed signal is distributed to a corresponding second transmission line via the first transmission line, and an area of the second transmission line shielded by the coupling part is changed by rotating the coupling part through the controller, so as to shift a phase of the signal transmitted by the second transmission line.

Abstract: A dual-frequency antenna includes a substrate, a ground layer, a plurality of signal feed portions, at least one first radiation portion, a plurality of second radiation portions, a plurality of first signal transmission lines, a plurality of second signal transmission lines, a plurality of first filters, and a plurality of second filters. The signal feed portions are disposed between the first radiation portions and the second radiation portions that are disposed on the first surface of the substrate in a staggered manner. The first signal transmission lines and the second signal transmission lines are respectively used to connect the signal feed portions with the first radiation portions and the second radiation portions. The first filters and the second filters are respectively disposed on the first signal transmission lines and the second signal transmission lines. The dual-frequency antenna is applicable for providing broadband and high gain features.

Abstract: An antenna includes a substrate, a signal feed portion, and a plurality of radiation units. The substrate has a first surface and a second surface. The signal feed portion is located on the substrate. The plurality of radiation units is located on the substrate, connected to the signal feed portion, and arranged in a radial shape. Each of the radiation units includes a radiation portion and a ground portion. The radiation portion is located on the first surface with one end connected to the signal feed portion. The ground portion is located on the second surface in symmetry with the radiation portion, with one end connected to the signal feed portion. A plurality of dipole antennas connected in parallel to the signal feed portion, so as to avoid a zero point generated on the single dipole antenna, such that a wave width of the antenna radiation has a large angle.

Abstract: An omnidirectional antenna includes a substrate, a signal feed-in portion, a first radiation unit, and a second radiation unit. The first radiation unit is located on a first surface of the substrate, and electrically connected to a first circuit of the first surface. The first radiation unit has a first extension end and a second extension end. The second radiation unit is located on a second surface of the substrate, and electrically connected to a second circuit of the second surface. The second radiation unit has a third extension end and a fourth extension end. The first extension end is disposed corresponding to the third extension end, and the second extension end is disposed corresponding to the fourth extension end. The signal feed-in portion is located on the first circuit and the second circuit. Thus, the impedance is improved, a wider bandwidth is achieved, and the process is simplified.

Abstract: An antenna includes a substrate, a radiation portion, and a signal feed-in portion. The radiation portion includes a first radiation unit and a second radiation unit. The first radiation unit and the second radiation unit are disposed on the same surface of the substrate. The signal feed-in portion is disposed on the first radiation unit. The second radiation unit and the first radiation unit have the same shape and are symmetrical in position, and the second radiation unit is connected to the first radiation unit, such that the first radiation unit and the second radiation unit form a closed loop. Thus, the impedance is improved and a wider bandwidth is achieved.

Abstract: A dual-polarized antenna device includes a base plate, a first polarized antenna, and a second polarized antenna. The second polarized antenna is arranged perpendicularly crossing the first polarized antenna without contact. The first polarized antenna and the second polarized antenna are respectively connected to the base plate integrally and inseparably, such that the dual-polarized antenna device has a reduced cost and is more convenient to assemble.

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: A pivot structure is used to pivotally connect a first object to a second object includes a pivot hole and a pivot portion. The pivot hole is disposed at the second object, while the pivot portion is disposed at the first object. The pivot portion has a discontinuous ring with an outside diameter lager than an aperture of the pivot hole. The discontinuous ring can be squeezed to be deformed and be inserted into the pivot hole, such that the discontinuous ring tightly bears against the pivot hole to maintain an included angle between the first object and the second object at any time, thereby a user can steplessly adjust the included angle of the two objects.

Abstract: A method of inhibiting cross-polarization of a microstrip antenna and a device thereof. Increase of a microstrip antenna array not only increases co-polarization, but also increases cross-polarization. When the microstrip antenna is designed and fabricated, the fabricated antenna is tested first. That is, intensity distribution of the cross-polarization in a radiation frequency band is tested first, and a radiation frequency that the cross-polarization is corresponding change with is found out when an antenna radiation unit is broken. A slot is fabricated in the corresponding antenna radiation unit to break the symmetry of the antenna radiation unit, so as to effectively inhibit the cross-polarization without influencing the co-polarization of the antenna radiation unit at a corresponding radiation frequency.

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 high gain omni-directional antenna includes a substrate, a signal feed-in portion, a first radiating unit, and a second radiating unit. The first radiating unit and second radiating unit respectively have a first radiation contact and a second radiation contact, for connecting the first radiating unit and the second radiating unit in series so as to form a circular closed loop. The high gain omni-directional antenna avoids the coupling effect between the signal line and the radiating end of the conventional high gain omni-directional antenna, and further solves the problem of excessively high directivity caused by the distance between the signal line and the radiating end. The design of the ring antenna of the high gain omni-directional antenna can raise the impedance and also realize a broader bandwidth.

Abstract: A slot-coupled microstrip antenna includes a first substrate, a second substrate, and a support base. The first substrate having a first surface and a second surface, in which a ground surface that is formed on the first surface, and a plurality of slots are formed on the ground surface. A feeding network is formed on the second surface. A plurality of antenna corresponding to the slots are formed on the second substrate disposed above the first surface. The support base having two fillisters at two side of the support base. The design of slot structure often has adverse influence on cross polarization and a front-to-back ratio of antenna radiation. The support base having two fillisters of the slot-coupled microstrip antenna can effectively inhibit the influence on the cross polarization and raise the front-to-back ratio from the slots.

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: A phase shifter includes a metal plate, a support portion, a slot, a coupling portion, and a ground portion. The phase shifter effectively improves signal coupling efficiency, and inhibits noise generated with the change of phase shift due to signal transmission. The phase shifter is advantageous in smaller volume, easy to assemble, and low cost.

Abstract: An adjustable phase shifter for an antenna includes a metal circuit portion, a coupling portion, and a grounding portion. The metal circuit portion is used for receiving a fed-in signal, while the coupling portion is disposed on one side of the metal circuit portion and is disposed at an angle with respect to the metal circuit portion, for controlling a phase angle of the fed-in signal by adjusting the angle formed therebetween. The grounding portion is disposed on the other side of the metal circuit portion in parallel. The structure of the adjustable phase shifter for adjusting the phase angle output by the phase shifter is simple, so as to improving the fabrication efficiency. Moreover, the fabrication efficiency of the adjustable phase shifter is able to be further improved by adopting an attachable impedance matcher, or changing the structure of the coupling portion.

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 dipole array directional antenna is integrally formed. The antenna includes two radiation portions, having a signal feed-in part and a ground signal feed-in part there-between, in which the signal feed-in part receives a feed-in signal, and each radiation portion radiates a radio-frequency (RF) signal corresponding to the feed-in signal; a ground portion, formed at an area adjacent to the ground signal feed-in part, and electrically coupled to the radiation portions; and two slots, respectively opened between each radiation portion and the ground portion, for matching a line impedance of the dipole array directional antenna.