Abstract: A PIFA in one embodiment includes a radiating member including a feed point, a shorting point, a first radiating element having a starting point and a terminating point coiled as a longer path terminated at an outer edge of a ground plane and being open for generating a resonance mode having a low frequency, and a second radiating element having a starting point connected to the starting point of the first radiating element, and a terminating point extended to form a shorter path terminated at the outer edge of the ground plane, the terminating points of the first and second radiating elements adjacent for generating a resonance mode having a high frequency; low and high frequency medium frequency regulators for adjusting resonance frequencies of two different resonance modes a substrate; a feed member; and a shorting member.

Abstract: An antenna device comprises a base, a combination element, a fixing element, a rotation unit, and a radiation conductor. The base has a through hole and a bottom surface. The bottom surface has a plurality of pins, and the through hole is approximately parallel to the bottom surface. The combination element has a first blocking portion. The fixing element has an embedding surface, wherein the embedding surface is surrounded by a plurality of metal plates. The first blocking portion touches one terminal of the fixing element. The rotation unit has a second blocking portion, and the second blocking portion touches the other terminal of the fixing element. The other terminal of rotation unit pivoted at the radiation conductor. The fixing element wedges with close in the inner of the through hole of the base. Therefore, the antenna device is formed a firm structure.

Abstract: An antenna array includes five grounding plates, a signal transmission part, two radiation conductors, and a signal feed cable. The first and fifth grounding plates located at the same plane are substantially perpendicular with the second and fourth grounding plates respectively. The second and fourth grounding plates respectively connected to the first and fifth grounding plates extend with the same direction and have two holes or grooves. The third grounding plate connected between the second and fourth grounding plates is substantially perpendicular with the second and fourth grounding plates. The signal transmission part passing through the two holes or grooves is substantially perpendicular with the second and fourth grounding plates. The signal transmission part is connected between the two radiation conductors. The signal feed cable includes a central conductor connected to the signal transmission part and an outer conductor connected to the third grounding plate.

Abstract: An antenna has a plurality of metallic patches and a feed network both being spaced apart from a ground plate at different levels to obtain better radiation pattern and gain effects. Each of the metallic patches has a body with an outer edge from which an inclined wing extends upwardly and outwardly. Furthermore, the metallic patches and the feed network are integrally formed by bending a single piece of metal plate, thus the antenna improves the design flexibility and also simplifies the production process.

Abstract: A broadband antenna has a substrate, a coupling conductor, a conductor string, a ground conductor and a ground plane. The coupling conductor has a first coupling member and a second coupling member being separated from each other. The conductor string and the ground conductor are connected to the second coupling member. The conductor string extends along a direction opposite to the second coupling member. The ground conductor is connected to the ground plane. The broadband antenna uses the coupling conductor and the ground conductor to adjust input impedance for impedance match. The conductor string functions as a multi level resonance circuit to increase impedance bandwidth.

Abstract: A foldable electronic device comprising a first body, a second body, a second body, a pivot, an antenna module, and a coupling module is provided. The first body comprises a first cover. The second body comprises a second cover. The pivot allows the second body to rotate relative to the first body. The antenna module is disposed within the first body and comprises a ground plane electrically connected to the first cover. The coupling module comprises a first coupling portion and a second coupling portion. The first coupling portion is disposed within the first body and electrically connected to the first cover. The first coupling portion is adjacent to the antenna module, and a gap formed between the antenna module and the first coupling portion. The second coupling portion disposed within the second body is electrically connected to the second cover and corresponds to the first coupling portion.

Abstract: An apparatus and a method for switching a frequency band of an antenna, used in an electronic device having an antenna are provided. The apparatus comprises a driving device, a switching device, and a radio frequency module. The switching device is used for adjusting the frequency band of the antenna to cover a system frequency band of a communication system adopted by the electronic device. The driving device is used for receiving a switching command from the electronic device and driving the switching device accordingly, in which the switching command indicates the communication system adopted by the electronic device. The radio frequency module is used for performing down frequency conversion on the signals output by the switching device and performing up frequency conversion on the signals to be input to the switching device. Accordingly, more than two frequency bands can be supported by the electronic device with a single antenna.

Abstract: A multi-frequency antenna with dual loops is provided. The antenna includes a T-shaped radiator having a first arm and a second arm of unequal lengths as a main body, and two grounded L-shaped radiators, so as to form dual loops. Thus, the antenna can operate in a high-frequency operation mode and a low-frequency operation mode. With the dual loops, the antenna obtains enough bandwidths at high frequency, and also meets the requirements of low frequency. More specific, the antenna meets the requirements of high-frequency systems, such as DCS/PCS/UMTS and those of low-frequency systems, such as AMPS/GSM.

Abstract: A coupling antenna has a ground plane, a main radiating assembly and a secondary radiating assembly. The main radiating assembly is mounted on the ground plane and has a substrate, a feeding-and-coupling assembly and a shorting member. The feeding-and-coupling assembly has a feeding member, a coupling member and an extension member. The second radiating assembly is mounted on the ground plane, is connected to the main radiating assembly and has a first radiating patch and a second radiating patch. With the extension member and the first and second radiating patches, operating bandwidth of the coupling antenna is improved.

Abstract: A coupling antenna has a substrate, an inducting conductor, a ground plane, a first coupling member and a second coupling member. The inducting conductor is mounted on the substrate. The ground plane is formed on and protrudes from the inducting conductor and is mounted on the substrate. The first coupling member is mounted on the substrate and is connected to a feeding cable. The second coupling member is mounted on the substrate and is connected to the first coupling member. The coupling antenna with the first coupling member, the second coupling member and the inducting conductor has a wide bandwidth and a small size.

Abstract: An antenna is formed integrally into one piece and has a ground plane, a feeding strip and two pairs of radiating patches. The feeding strip is connected integrally to the ground plane. The pairs of the radiating patches are formed symmetrically and integrally on the feeding strip. The antenna formed integrally into one piece simplifies the manufacture of the antenna lowers the manufacturing cost of the antenna.

Abstract: A wide band antenna has a ground plane, a dielectric member and a radiating patch. The dielectric member is mounted on the ground plane. The radiating patch is held by the dielectric member, is mounted on the ground plane and has a main conductor, a feeding conductor, a coupling conductor, an extension conductor and a shorting conductor. The main conductor has a first resonant mode. The extension conductor has a second resonant mode. The coupling conductor is capable of feeding high frequency signals into the main conductor and the extension conductor by capacitive coupling effect. With the main conductor, the extension conductor and the coupling conductor, the size of the wide band antenna is effectively reduced.

Abstract: A circularly polarized antenna has a dielectric substrate, a feeding member, a coupling member, a ground plane, a support and a radiating patch. The feeding member is mounted on the dielectric substrate and has a first conductor, a second conductor, a connecting conductor and a third conductor. The second conductor is connected to the first conductor. The connecting conductor is connected to the first conductor. The third conductor is connected to the connecting conductor and is parallel to the second conductor. The coupling member is connected to the feeding member. The ground plane is mounted on the dielectric substrate. The support is mounted on the dielectric substrate. The radiating member is mounted on the support. The circularly polarized antenna generates the circularly polarized radiation being parallel to the ground plane so that portable wireless products with the circularly polarized antenna have an excellent gain.

Abstract: An electrical connector includes a top plate, a first clamping plate extending integrally and downwardly from a first side of the top plate, and a second clamping plate extending integrally and downwardly from a second side of the top plate, and cooperating with the top plate and the first clamping plate to define a clamp for clamping a grounding plate. A connecting member extends integrally from the second side of the top plate and is connected electrically to a ground pattern provided on a circuit board of an antenna module.

Abstract: A retainer is adapted for retaining a coaxial cable on a planar antenna. The coaxial cable includes a core conductor disposed at the center thereof, an insulator provided around the core conductor, an outer conductor provided around the insulator, and an insulating sheath provided around the outer conductor. The retainer is metallic, and includes a clamping member including a C-shaped clamp for clamping and contacting electrically the outer conductor of the coaxial cable, and a connecting member connected integrally to the clamping member and adapted to be connected electrically to the planar antenna.

Abstract: An antenna has a ground plane, a radiating member, a signal-feeding member and two grounding supports. The radiating member is suspended over and separated from the ground plane and has two opposite non-radiating edges. Each non-radiating edge has a middle section. Each grounding support is connected perpendicularly to the middle section of one non-radiating edge of the radiating member and the ground plane. The grounding supports connected between the radiating member and the ground plane excellently improve the combination of the radiating member and the ground plane to prevent the antenna from inadvertently disassembling.

Abstract: An antenna array has a ground plane, a plurality of spacers, a radiating patch array and a feeding member. The spacers are mounted on the ground plane. The radiating patch array is mounted on the spacers, is separated from the ground plane at an interval and has three pairs of radiating patches. Each radiating patch is parallel to the ground plane and has a sub radiating patch formed on and inclined away from the ground plane. The inclined sub radiating patches and the interval increase gain of the antenna array.

Abstract: A multiband antenna with the broadband function has a radiator, a feed cable, a first extension conductor, and a second extension conductor. The radiator has a microwave substrate, a coupling conductor, a first conductor, a second conductor, a third conductor, and a connecting conductor. The coupling conductor is connected with a positive signal wire of the feed cable. The third conductor is connected with a negative signal of the feed cable for transmitting electrical signals. The radiator generates the multiband mode of the antenna. By connecting the first extension conductor and the second extension conductor with the radiator, the surface current distribution and impedance variation of the antenna can be effectively adjusted to achieve the broadband effect.

Abstract: A multi-band antenna with the broadband function is based upon a planar inverted-F antenna with two conductive arms and a ground. The two conductive arms extend from the ground near the two opposite ends of the ground. Two radiation plates of the two conductive arms extend toward each other. The multi-band antenna has a sufficient large band at high frequencies. Since the conductive arms are disposed close to the two ends of the ground, operations of bending the two conductive arms or soldering a feed wires are simpler and have a higher yield.

Abstract: An antenna array unit is provided by the present invention. The antenna array unit includes: a ground, a feeder cable, a first signal feeding member, a plurality of second signal feeding members, a plurality of third signal feeding members, a plurality of first rectangular radiating members and a plurality of second rectangular radiating members. The first rectangular radiating members have first and second non-radiating sides, two radiating sides able to generate a coupling effect with a radiating side adjacent thereto. The second rectangular radiating members have first and second non-radiating sides, two radiating sides and able to generate a coupling effect with a radiating side adjacent thereto. The present invention is characterized in that at least one current disturbing member is formed at each non-radiating second side of the plurality of the first and the second rectangular radiating members and adjacent to the nearest radiating side generating the coupling effect.