Abstract: The antenna device includes a first antenna module and a second antenna module. The first antenna module includes a number of first antennas disposed at intervals. The second antenna module includes a number of second antennas disposed at intervals within a space surrounded by the first antennas. The first and second antennas are of different polarization directions. In one embodiment, the first antennas are horizontally polarized antennas having omnidirectional field patterns. The second antennas are inverted F antennas. By arranging the first and second antennas along an outer ring and an inner ring respectively, the distance between the first and second antenna modules are maximized. Furthermore, by having the first and second antennas with orthogonal polarization directions, the mutual interference between the radiation energy of the first and second antenna modules is effectively reduced.

Abstract: The antenna device includes a first antenna module and a second antenna module. The first antenna module includes a number of first antennas disposed at intervals. The second antenna module includes a number of second antennas disposed at intervals within a space surrounded by the first antennas. The first and second antennas are of different polarization directions. In one embodiment, the first antennas are horizontally polarized antennas having omnidirectional field patterns. The second antennas are inverted F antennas. By arranging the first and second antennas along an outer ring and an inner ring respectively, the distance between the first and second antenna modules are maximized. Furthermore, by having the first and second antennas with orthogonal polarization directions, the mutual interference between the radiation energy of the first and second antenna modules is effectively reduced.

Abstract: An antenna module and an antenna structure thereof are provided. The antenna structure includes a baseboard, secondary antenna units, and a primary antenna unit. The baseboard has an irregular shape and is electrically connected to a ground terminal. The primary antenna unit vertically extends from an edge of the baseboard, includes a primary signal fed-in portion for receiving a primary current, and provides a primary current path with the baseboard. When the primary current flows along the primary current path, a primary radiation field is formed. The secondary antenna units are around the primary antenna unit and vertically extend from other edges of the baseboard. Each of the secondary antenna units includes a secondary signal fed-in portion for receiving a secondary current and provides a secondary current path with the baseboard. When the secondary current flows along the secondary current path, a secondary radiation field is formed.

Abstract: An embedded UWB antenna and a portable device having the same are disclosed. The embedded UWB antenna comprises a grounding element; a T-shaped radiating element having a horizontal portion comprising at least an opening for cutting off undesired frequency and a vertical portion comprising a feed point for feeding current to resonate frequency; and a plurality of sleeve elements extended from the grounding element along two sides of the vertical portion; wherein the plurality of sleeve elements and the vertical portion are substantially parallel to each other.

Abstract: An antenna includes a grounding element, a radiating element, an interconnecting element and a conductive element. The interconnecting element connects the radiating element and the grounding element. The conductive element is disposed between the grounding element and the radiating element and apart from the grounding element and the radiating element. Moreover, the conductive element has a feed positioned thereon.

Abstract: An embedded UWB antenna and a portable device having the same are disclosed. The embedded UWB antenna comprises a grounding element; a T-shaped radiating element having a horizontal portion comprising at least an opening for cutting off undesired frequency and a vertical portion comprising a feed point for feeding current to resonate frequency; and a plurality of sleeve elements extended from the grounding element along two sides of the vertical portion; wherein the plurality of sleeve elements and the vertical portion are substantially parallel to each other.

Abstract: An antenna structure includes a ground element, a first transmitting element and a second transmitting element. The first transmitting element transmits a first wireless signal, and comprises a first connecting portion and a first radiation portion. The first connecting portion is connected to the ground element and the first radiation portion. The second transmitting element transmits a second wireless signal and comprises a second connecting portion and a second radiation portion. The second connecting portion is connected to the ground element and the second radiation portion. The second connecting portion is shorter than the first connecting portion, and the second radiation portion is shorter than the first radiation portion.

Abstract: The present invention includes a wide-band antenna, which includes a grounding unit electrically connected to a ground, a radiating unit including a first radiator component extending along a first direction, and a second radiator component electrically connected to the first radiator component and extending along an opposite direction of the first direction, a shorting unit electrically connected between the first radiator component and the grounding unit, a feeding unit electrically connected to the first radiator component, and a connector unit electrically connected between the feeding unit and the grounding unit for receiving feeding signals.

Abstract: A broadband antenna for wireless communication system, the broadband antenna includes a radiating element, a grounding element and a connecting element for connecting the radiating element and the grounding element. The radiating element has a U-shaped structure, a V-shaped structure or an L-shaped structure. The broadband antenna of the present invention has wider frequency bandwidth and higher antenna efficiency.

Abstract: The present invention provides a broadband antenna that is used in wireless communication systems. The broadband antenna includes a closed looped radiating element having a body section and a hollow section formed by closed compassing by the body section; a grounding element; and a connecting element having a first end electrically connected to the closed looped radiating element and a second end electrically connected to the grounding element. The antenna of the present invention can provide a wider frequency bandwidth and better antenna efficiency.

Abstract: An antenna includes a grounding element, a radiating element and a coupling element. The radiating element has a radiating part and a connecting part. The connecting part connects the grounding element and the radiating part. The coupling element extends from the grounding element and is positioned between the radiating element and the grounding element.

Abstract: An antenna includes a grounding element, a radiating element, an interconnecting element and a conductive element. The interconnecting element connects the radiating element and the grounding element. The conductive element is disposed between the grounding element and the radiating element and apart from the grounding element and the radiating element. Moreover, the conductive element has a feed positioned thereon.

Abstract: An antenna comprises a ground element, a conductive element, a signal line, a first transmitting element, a second transmitting element. The conductive element is L-shaped and connected to the ground element. The signal line is coupled to the conductive element. The first transmitting element is connected to the conductive element for transmitting a first signal. The second transmitting element is connected to the conductive element for transmitting a second signal. The first signal is a GSM900 signal and the second signal is a DCS1800 signal.

Abstract: Planar monopole antennas. A planar monopole antenna for communicating radio signals within a specific frequency range includes a substrate, a ground, a first sleeve, a second sleeve and a radiator. The radiator and the ground are formed on the substrate. The first and second sleeves project from a side of the ground in a first direction, wherein the first sleeve has a first length, and the second sleeve has a second length in the first direction. The side of the ground defines a third length. The radiator has a fourth length in the first direction, substantially equal to the sum of the first, second, and third lengths.

Abstract: A broadband antenna for wireless communication system, the broadband antenna includes a radiating element, a grounding element and a connecting element for connecting the radiating element and the grounding element. The radiating element has a U-shaped structure, a V-shaped structure or an L-shaped structure. The broadband antenna of the present invention has wider frequency bandwidth and higher antenna efficiency.