Abstract: An antenna set includes a first antenna, a second antenna, and a neutralized line. Each of the first antenna and the second antenna has a low frequency resonant path and a high frequency resonant path. The neutralized line is couple to the low frequency resonant path of the first antenna and the low frequency resonant path of the second antenna. The low frequency resonant path of the first antenna and the low frequency resonant path of the second antenna correspond to a first frequency band, the high frequency resonant path of the first antenna and the high frequency resonant path of the second antenna correspond to a second frequency band, and the two low frequency resonant paths do not overlap the two high frequency resonant paths.

Abstract: An antenna set includes a first antenna, a second antenna, and a neutralized line. Each of the first antenna and the second antenna has a low frequency resonant path and a high frequency resonant path. The neutralized line is couple to the low frequency resonant path of the first antenna and the low frequency resonant path of the second antenna. The low frequency resonant path of the first antenna and the low frequency resonant path of the second antenna correspond to a first frequency band, the high frequency resonant path of the first antenna and the high frequency resonant path of the second antenna correspond to a second frequency band, and the two low frequency resonant paths do not overlap the two high frequency resonant paths.

Abstract: A current breaker comprises a multi-layer printed circuit board (PCB), a ground plane, a metal component and a conductive via hole. The ground plane is disposed in a first metal layer of the multi-layer PCB and comprises a slot forming inductive impedance. The slot comprises an extended portion. The metal component is disposed in a second metal layer of the multi-layer PCB. Capacitive impedance is formed between the metal component and the ground plane. The projection of the metal component on the ground plane and the extended portion of the slot partially overlap. The conductive via hole penetrates the multi-layer PCB to connect metal component with the ground plane. The first and the second metal layers are any two metal layers of the multi-layer PCB. The inductive impedance formed by the slot and the capacitive impedance formed between the metal component and the ground plane create a parallel LC equivalent circuit.

Abstract: A switched beam smart antenna apparatus is disclosed including: a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth beam adjusting elements; a first, a second, a third, and a fourth beam control modules; a first, a second, a third, and a fourth radiation strips positioned within an area surrounded by the first to eighth beam adjusting elements; and a radiation strip control module for selecting either the first and second radiation strips or the third and fourth radiation strips to transmit signals. When the first beam control module conducts the first and second beam adjusting elements, the third beam control module does not conduct the fifth and sixth beam adjusting elements. When the second beam control module conducts the third and fourth beam adjusting elements, the fourth beam control module does not conduct the seventh and eighth beam adjusting elements.

Abstract: A dual-band antenna of a wireless communication apparatus includes a first radiation part for receiving or transmitting signals at a first frequency band; a second radiation part for generating a coupling effect together with the first radiation part to receive or transmit signals at a second frequency band having a center frequency lower than a center frequency of the first frequency band, wherein the second radiation part comprises multiple radiation sections, and at least one of the multiple radiation sections is positioned on a first plane; a feeding element for coupling with a signal receiving terminal of the wireless communication apparatus; and a shorting element for coupling with a fixed-voltage region of the wireless communication apparatus. The first radiation part does not physically contact with the second radiation part, and at least a portion of the first radiation part is not positioned on the first plane.

Abstract: A wireless communication apparatus and a planar antenna thereof are provided. The wireless communication apparatus comprises a connecting port, a printed circuit board, and a planar antenna. The printed circuit board is connected to the connecting port, and the planar antenna is formed on the printed circuit board. The planar antenna comprises a radiation portion, a shorting portion, and a feeding portion. The feeding portion is connected to the radiation portion and the shorting portion, and the radiation portion and the shorting portion are in a bent shape so that the radiation portion, the shorting portion and the feeding portion are distributed in a rectangular region.

Abstract: A dual-band antenna, disposed in a substrate, is provided. The dual-band antenna includes: a feeding part and a slot antenna. The feeding part, disposed on a first side of the substrate, is used for feeding electromagnetic signals with a first resonance frequency and a second resonance frequency, wherein the second resonance frequency is substantially equal to twice the first resonance frequency. The slot antenna includes: a rectangular part with two long edges and two short edges, and a funnel part with a bottom edge, a top edge, and two side edges, wherein the bottom edge is shorter than the top edge, and the two side edges are equal in length substantially, the bottom edge of the funnel part is next to a short edge of the rectangular part, and a center line of the slot antenna corresponds to wavelength of the first frequency.

Abstract: A current breaker comprises a multi-layer printed circuit board (PCB), a ground plane, a metal component and a conductive via hole. The ground plane is disposed in a first metal layer of the multi-layer PCB and comprises a slot forming inductive impedance. The slot comprises an extended portion. The metal component is disposed in a second metal layer of the multi-layer PCB. Capacitive impedance is formed between the metal component and the ground plane. The projection of the metal component on the ground plane and the extended portion of the slot partially overlap. The conductive via hole penetrates the multi-layer PCB to connect metal component with the ground plane. The first and the second metal layers are any two metal layers of the multi-layer PCB. The inductive impedance formed by the slot and the capacitive impedance formed between the metal component and the ground plane create a parallel LC equivalent circuit.

Abstract: A switched beam smart antenna apparatus is disclosed including: a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth beam adjusting elements; a first, a second, a third, and a fourth beam control modules; a first, a second, a third, and a fourth radiation strips positioned within an area surrounded by the first to eighth beam adjusting elements; and a radiation strip control module for selecting either the first and second radiation strips or the third and fourth radiation strips to transmit signals. When the first beam control module conducts the first and second beam adjusting elements, the third beam control module does not conduct the fifth and sixth beam adjusting elements. When the second beam control module conducts the third and fourth beam adjusting elements, the fourth beam control module does not conduct the seventh and eighth beam adjusting elements.

Abstract: A dual-band antenna unit, comprising: a first radiation unit; a second radiation unit; a first signal feed-in unit electrically connected to the first radiation unit; and a second signal feed-in unit, electrically connected to the second radiation unit; wherein the first radiation unit, the second radiation unit, the first signal feed-in unit and the second signal feed-in unit are disposed in the dual-band antenna unit. Therefore, the number of antennas can be reduced to achieve lower cost while remaining the signal transmission quality.

Abstract: The present invention discloses a planar antenna including a substrate, a ground plane and a feed line. The ground plane is disposed on one side of the substrate. The ground plane includes a hollow portion. The feed line disposed on another side of the substrate and corresponding to the hollow portion for feeding a signal. The present invention also discloses a planar antenna including a substrate, a ground plane and a feed line. The ground plane is disposed on one side of the substrate. The ground plane includes a first hollow portion and a second hollow portion. The feed line is disposed on another side of the substrate and having a first branch feed portion and a second branch feed portion for feeding a signal, and the first branch feed portion and the second branch feed portion are aligned with the first hollow portion and the second hollow portion respectively.

Abstract: A wireless communication apparatus and a planar antenna thereof are provided. The wireless communication apparatus comprises a connecting port, a printed circuit board, and a planar antenna. The printed circuit board is connected to the connecting port, and the planar antenna is formed on the printed circuit board. The planar antenna comprises a radiation portion, a shorting portion, and a feeding portion. The feeding portion is connected to the radiation portion and the shorting portion, and the radiation portion and the shorting portion are in a bent shape so that the radiation portion, the shorting portion and the feeding portion are distributed in a rectangular region.

Abstract: Provided is a miniature three-dimensional antenna. The subject matter is particularly a miniature, low-height, and three-dimensional structure single-frequency antenna. In accordance with the preferred embodiment, the antenna includes a radiation member with extended structure, and the radiation member has a first radiation plane and a non-coplanar second radiation plane. One end extended from the first radiation plane forms a radiation bent member by a bending process. Furthermore, the antenna includes a feed member and a ground member which are the structure extended from the radiation member. In particularly, the first radiation plane, the second radiation plane, the radiation bent member, the feed member, and ground member are not coplanar. The three-dimensional structure is featured to provide the low-height structure, and fortify the antenna structure. Moreover, it is easy to apply to significant number of applications through adjustment of members.

Abstract: A dual-band antenna unit, comprising: a first radiation unit; a second radiation unit; a first signal feed-in unit electrically connected to the first radiation unit; and a second signal feed-in unit, electrically connected to the second radiation unit; wherein the first radiation unit, the second radiation unit, the first signal feed-in unit and the second signal feed-in unit are disposed in the dual-band antenna unit. Therefore, the number of antennas can be reduced to achieve lower cost while remaining the signal transmission quality.

Abstract: The present invention discloses a planar antenna including a substrate, a ground plane and a feed line. The ground plane is disposed on one side of the substrate. The ground plane includes a hollow portion. The feed line disposed on another side of the substrate and corresponding to the hollow portion for feeding a signal. The present invention also discloses a planar antenna including a substrate, a ground plane and a feed line. The ground plane is disposed on one side of the substrate. The ground plane includes a first hollow portion and a second hollow portion. The feed line is disposed on another side of the substrate and having a first branch feed portion and a second branch feed portion for feeding a signal, and the first branch feed portion and the second branch feed portion are aligned with the first hollow portion and the second hollow portion respectively.