Abstract: Radio-frequency identification (RFID) tag antenna, tags and communications systems using the same are presented. The RFID tag antenna includes a patterned conductive loop having a plurality of longitudinal conductive sections and a pair of transverse conductive sections connecting to each end of the longitudinal conductive sections to serve as a matching network. A pair of extended conductive arms is electrically connected to the patterned conductive loop via two nodes. A bonding pad with an RFID chip disposed thereon is arranged at the central area of the pair of extended conductive arms.

Abstract: An inductor device comprising a first conductive pattern on a first layer of a substrate, a second conductive pattern on a second layer of the substrate, and a first region between the first layer and the second layer through which at least one hole is coupled between the first dielectric layer and the second dielectric layer, wherein a magnetic field induced by at least one of the first conductive pattern or the second conductive pattern at the first region is more intensive than that induced by at least one of the first conductive pattern or the second conductive pattern at a second region between the first conductive layer and the second conductive layer.

Abstract: A three-dimensional inductor is provided. The three-dimensional inductor is disposed in a multi-layered substrate. The multi-layered substrate includes at least a dielectric layer and at least two metal layers. The three-dimensional inductor includes a first coil and a second coil. The second coil is electrically connected to the first coil. The first coil is on a first plane and formed on a first metal layer. The second coil is on a second plane and disposed in a variety of dielectric layers and metal layer. The first plane is not parallel to or is vertical to the second plane such that the magnetic field generated by the first coil and the magnetic field generated by the second coil are not parallel to each other or are vertical to each other.

Abstract: A dual-port capacitor structure includes a first electrode plate having a first opening; a second electrode plate having a second opening; and a third electrode plate, disposed in the first opening of the first electrode plate and the second opening of the second electrode plate. The first electrode plate, the second electrode plate and the third electrode plate locate on the same plane.

Abstract: A capacitor structure is provided. In the capacitor structure, a signal electrode plate and an extension ground electrode plate are disposed on the same plane to form a co-plane capacitor structure. Due to slow wave characteristic, the resonance frequency of the capacitor structure is effectively raised and the capacitor structure may be applied in high frequency.

Abstract: A band-pass filter includes a plurality of resonators, a feedback capacitive device and a grounding inductance device. A first end of each resonator is connected to a first node, and a second end of each resonator is connected to a second node. The feedback capacitive device is formed on the feedback circuit from the first node to the second node. The grounding inductance device is connected to the second node and ground. In an embodiment, the resonator essentially consists of a capacitive device and an inductance device.

Abstract: An inductor device comprising a first conductive pattern on a first layer of a substrate, a second conductive pattern on a second layer of the substrate, and a first region between the first layer and the second layer through which at least one hole is coupled between the first dielectric layer and the second dielectric layer, wherein a magnetic field induced by at least one of the first conductive pattern or the second conductive pattern at the first region is more intensive than that induced by at least one of the first conductive pattern or the second conductive pattern at a second region between the first conductive layer and the second conductive layer.

Abstract: An embedded resistor device includes a resistor, a ground plane located near a first side of the resistor and electrically coupled to a first end of the resistor, at the ground plane a hole is provided, a first dielectric layer exists between the resistor and the ground plane, a conductive wire, which is electrically coupled to a second end of the resistor different from the first end of the resistor and partially surrounds the resistor, is used as an auxiliary for supporting a resistor-coating process of the resistor and to provide a terminal of the embedded resistor device at the conductive wire, a conductive region located near a second side of the ground plane different from the first side of the resistor, a second dielectric layer exists between the ground plane and the conductive region, and a conductive path to electrically couple the conductive wire to the conductive region through the hole.

Abstract: A reconfigurable multi-band antenna system has a signal transmission metal, a ground metal, at least two resonators, and at least two switches. The signal transmission metal and the ground metal respectively act as a signal feed-in end and a ground end and of the reconfigurable multi-band antenna system. The at least two resonators are disposed on at least one side of the transmission metal line. Each switch is coupled to the at least two resonators or one of them. Each switch has a control end, and independently and respectively receives one of the at least two control signals, wherein the at least two control signals respectively and independently the short and open of the switches. The at least two resonators form a resonator configuration of a semi-close resonating configuration or a close resonating configuration, and generates a signal within a frequency according to the resonator configuration.

Abstract: A meander inductor is disclosed, the inductor is disposed on a substrate or embedded therein. The meander inductor includes a conductive layer composed of a plurality of sinusoidal coils with different amplitudes and in series connection to each other, wherein the sinusoidal coils with different amplitudes are laid out according to a periphery outline. The profile of the meander inductor is designed according to an outer frame range available for accommodating the meander inductor and is formed by coils with different amplitudes. Therefore, under a same area condition, the present invention enables the Q factor and the resonant frequency fr of the novel inductor to be advanced, and further expands the applicable range of the inductor.

Abstract: The invention provides tunable embedded high frequency inductor devices. The inductor device comprises a dielectric substrate. A first conductive line is disposed on a first surface of the dielectric substrate. A second conductive line is disposed on a second surface of the dielectric substrate. An interconnection is disposed perforating the dielectric substrate and connecting the first conductive line with the second conductive line. A coupling region is defined between the first and the second conductive lines. A conductive plug connecting the first conductive line and the second line is disposed in the coupling region. Alternatively, an opening is disposed in the first and second conductive lines to tune inductance of the inductor.

Abstract: Radio-frequency identification (RFID) tag antenna, tags and communications systems using the same are presented. The RFID tag antenna includes a patterned conductive loop having a plurality of longitudinal conductive sections and a pair of transverse conductive sections connecting to each end of the longitudinal conductive sections to serve as a matching network. A pair of extended conductive arms is electrically connected to the patterned conductive loop via two nodes. A bonding pad with an RFID chip disposed thereon is arranged at the central area of the pair of extended conductive arms.

Abstract: A band-pass filter includes a plurality of resonators, a feedback capacitive device and a grounding inductance device. A first end of each resonator is connected to a first node, and a second end of each resonator is connected to a second node. The feedback capacitive device is formed on the feedback circuit from the first node to the second node. The grounding inductance device is connected to the second node and ground. In an embodiment, the resonator essentially consists of a capacitive device and an inductance device.

Abstract: A capacitor structure is provided. In the capacitor structure, a signal electrode plate and an extension ground electrode plate are disposed on the same plane to form a co-plane capacitor structure. Due to slow wave characteristic, the resonance frequency of the capacitor structure is effectively raised and the capacitor structure may be applied in high frequency.

Abstract: A meander inductor is disclosed, the inductor is disposed on a substrate or embedded therein. The meander inductor includes a conductive layer composed of a plurality of sinusoidal coils with different amplitudes and in series connection to each other, wherein the sinusoidal coils with different amplitudes are laid out according to a periphery outline. The profile of the meander inductor is designed according to an outer frame range available for accommodating the meander inductor and is formed by coils with different amplitudes. Therefore, under a same area condition, the present invention enables the Q factor and the resonant frequency fr of the novel inductor to be advanced, and further expands the applicable range of the inductor.

Abstract: An interdigital capacitor includes a first finger electrode structure and a second finger electrode structure. The first finger electrode structure has a first electrode and a plurality of first extending electrodes. The first extending electrodes are linearly disposed and arranged. The second finger electrode structure has a second electrode and a plurality of second extending electrodes. The second extending electrodes are linearly disposed and arranged. The second finger electrode structure interlaces with the first finger electrode structure. At least one pair of first coupling electrodes extend respectively from the neighboring first and second extending electrodes and are disposed between them.

Abstract: The invention provides tunable embedded high frequency inductor devices. The inductor device comprises a dielectric substrate. A first conductive line is disposed on a first surface of the dielectric substrate. A second conductive line is disposed on a second surface of the dielectric substrate. An interconnection is disposed perforating the dielectric substrate and connecting the first conductive line with the second conductive line. A coupling region is defined between the first and the second conductive lines. A conductive plug connecting the first conductive line and the second line is disposed in the coupling region. Alternatively, an opening is disposed in the first and second conductive lines to tune inductance of the inductor.

Abstract: An embedded resistor device includes a resistor, a ground plane located near a first side of the resistor and electrically coupled to a first end of the resistor, at the ground plane a hole is provided, a first dielectric layer exists between the resistor and the ground plane, a conductive wire, which is electrically coupled to a second end of the resistor different from the first end of the resistor and partially surrounds the resistor, is used as an auxiliary for supporting a resistor-coating process of the resistor and to provide a terminal of the embedded resistor device at the conductive wire, a conductive region located near a second side of the ground plane different from the first side of the resistor, a second dielectric layer exists between the ground plane and the conductive region, and a conductive path to electrically couple the conductive wire to the conductive region through the hole.

Abstract: The present invention discloses a dual-band RF transceiver. The transceiver comprises a first module, used as the RF front-end of the dual-band transceiver and used for receiving and transmitting a first RF signal and a second RF signal; a second module, electrically connected to the first module, used as the IF IQ modulator/demodulator of the dual-band RF transceiver; a third module, electrically connected to the first and the second modules, used as the tripe-band phase-locked frequency synthesizer of the dual-band RF transceiver and used for providing a first local oscillating signal and a second local oscillating signal to the first module, and a third local oscillating signal to the second module. The dual-band RF transceiver according to the present invention realizes the dual-band triple-mode operation of IEEE802.11 a/b/g by a single dual-band RF module, and therefore the circuit size, power dissipation, component count, and cost can be dramatically reduced.

Abstract: An inductor device comprising a first conductive pattern on a first layer of a substrate, a second conductive pattern on a second layer of the substrate, and a first region between the first layer and the second layer through which at least one hole is coupled between the first dielectric layer and the second dielectric layer, wherein a magnetic field induced by at least one of the first conductive pattern or the second conductive pattern at the first region is more intensive than that induced by at least one of the first conductive pattern or the second conductive pattern at a second region between the first conductive layer and the second conductive layer.