Abstract: An enhanced printed circuit board monopole antenna includes a baseplate, a signal feed-in unit, a first-radiation unit, a second-radiation unit and an auxiliary ground unit. The first-radiation unit and the second-radiation unit are arranged on a front side and an edge side of the baseplate. The auxiliary ground unit is arranged on the edge side and electrically connected to a first ground unit and a second ground unit on the baseplate. Adjusting the first-radiation unit controls 88 MHZ-60 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. According to the frequency wave length (1?, ½?, ¼? or ??) formed by the first-radiation unit and the second-radiation unit cooperating with each other, controlling 88 MHZ-60 GHZ frequency range achieves the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna radiation efficiency can be increased effectively.

Abstract: An enhanced printed circuit board monopole antenna includes a baseplate, a signal feed-in unit, a first-radiation unit, a second-radiation unit and an auxiliary ground unit. The first-radiation unit and the second-radiation unit are arranged on a front side and an edge side of the baseplate. The auxiliary ground unit is arranged on the edge side and electrically connected to a first ground unit and a second ground unit on the baseplate. Adjusting the first-radiation unit controls 88 MHZ-60 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. According to the frequency wave length (1?, ½?, ¼? or ??) formed by the first-radiation unit and the second-radiation unit cooperating with each other, controlling 88 MHZ-60 GHZ frequency range achieves the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna radiation efficiency can be increased effectively.

Abstract: A method for manufacturing chip signal elements includes steps as follows. A substrate is provided. A plurality of through holes is drilled, and a plurality of side holes is formed along the through holes. A first cooper-plating process is performed to form a plurality of conductive layers electrically connected to the upper and the lower metal layer. A second cooper-plating process is performed to increase thickness of the conductive layers. A first and a second pattern layers are formed on the substrate by an etching. The first pattern layer is electrically connected to the second pattern layer to form a spiral radiator. An ink is printed on the substrate to cover the spiral radiator and form a solder mask layer. An organic metal process and a plating process are performed to form terminal electrodes. Finally, a single chip signal element having a spiral radiator is formed.

Abstract: A single feed-in dual-band antenna structure includes a first radiation unit, a basal plate and a plurality of matching components. The basal plate includes a front side, a back side and an edge side. A first ground unit, a signal feed-in unit, a second radiation unit and an electrode part are arranged on the front side. A third radiation unit is arranged on the edge side. A second ground unit is arranged on the back side of the basal plate. The first radiation unit is electrically connected to the electrode part. The first radiation unit is adjusted to control the 2.45 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. The third radiation unit frequency wave length controls the 5 GHZ frequency range to achieve the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna size can be reduced effectively.

Abstract: A single feed-in dual-band antenna structure includes a first radiation unit, a basal plate and a plurality of matching components. The basal plate includes a front side, a back side and an edge side. A first ground unit, a signal feed-in unit, a second radiation unit and an electrode part are arranged on the front side. A third radiation unit is arranged on the edge side. A second ground unit is arranged on the back side of the basal plate. The first radiation unit is electrically connected to the electrode part. The first radiation unit is adjusted to control the 2.45 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. The third radiation unit frequency wave length controls the 5 GHZ frequency range to achieve the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna size can be reduced effectively.

Abstract: An enhanced printed circuit board monopole antenna includes a baseplate, a signal feed-in unit, a first-radiation unit, a second-radiation unit and an auxiliary ground unit. The first-radiation unit and the second-radiation unit are arranged on a front side and an edge side of the baseplate. The auxiliary ground unit is arranged on the edge side and electrically connected to a first ground unit and a second ground unit on the baseplate. Adjusting the first-radiation unit controls 88 MHZ-60 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. According to the frequency wave length (1?, ½?, ¼? or ??) formed by the first-radiation unit and the second-radiation unit cooperating with each other, controlling 88 MHZ-60 GHZ frequency range achieves the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna radiation efficiency can be increased effectively.

Abstract: A method for manufacturing chip signal elements includes steps as follows. A substrate is provided. A plurality of through holes is drilled, and a plurality of side holes is formed along the through holes. A first cooper-plating process is performed to form a plurality of conductive layers electrically connected to the upper and the lower metal layer. A second cooper-plating process is performed to increase thickness of the conductive layers. A first and a second pattern layers are formed on the substrate by an etching. The first pattern layer is electrically connected to the second pattern layer to form a spiral radiator. An ink is printed on the substrate to cover the spiral radiator and form a solder mask layer. An organic metal process and a plating process are performed to form terminal electrodes. Finally, a single chip signal element having a spiral radiator is formed.

Abstract: A network switching apparatus for supplying power to network communication equipment through a twisted pair line comprising a power control circuit having a plurality of sockets, each socket connected with a RJ-45 connector so as to electrically connect the switching apparatus to a corresponding socket of the communication equipment through the twisted pair line of RJ-45 connector, and having the ability to identify, in accordance with specifications stipulated in IEEE 802.3af, whether the communication equipment has the capability of receiving power from each socket through the twisted pair line prior to supplying power to the communication equipment.

Abstract: A network switching apparatus for supplying power to network communication equipment through a twisted pair line comprising a power control circuit having a plurality of sockets, each socket connected with a RJ-45 connector so as to electrically connect the switching apparatus to a corresponding socket of the communication equipment through the twisted pair line of RJ-45 connector, and having the ability to identify, in accordance with specifications stipulated in IEEE 802.3af, whether the communication equipment has the capability of receiving power from each socket through the twisted pair line prior to supplying power to the communication equipment.