Abstract: An active heat-dissipation system for a base station of a communication system includes a measuring module, configured to detect a temperature sensing signal of the base station; a controller, configured to receive the temperature sensing signal detected by the measuring module to set a preset temperature signal, to generate a difference between the temperature sensing signal and the preset temperature signal and a time derivative of the difference, and to output a control signal according to the difference and the time derivative of the difference based on a control program; and a power module, configured to receive the control signal and output an electrical signal to a heat-dissipation module according to the control signal, such that the heat-dissipation module performs a heat-dissipation process for the base station according to the electrical signal.

Abstract: A capacitor array with staggered-layer structure includes a plurality of capacitor units. Each of the plurality of capacitor units comprises a plurality of odd layers formed with a first slot; a first via formed in the first slot; a plurality of first connecting portion configured to connect the first via and the plurality of odd layers; a plurality of even layers formed with a second slot; a second via formed in the second slot; a plurality of second connecting portion configured to connect the second via and the plurality of even layers; wherein one of the plurality of odd layers is adjacent to one of the plurality of even layers to form a staggered-layer structure.

Abstract: A phase controller for an antenna array includes a determination circuit, determining a direction index of the antenna array, and calculating a phase index according to the direction index according to a congruence modulo equation; a switching box, selecting L first frequency signals with L different first phases among K first frequency signals with K different first phases according to the phase index, wherein L and K are integer larger than 1, and L is not larger than K; and a frequency synthesizing module, comprising L phase-coherent PLL frequency synthesizers for receiving the L first frequency signals with the L different first phases to generate L second frequency signals with L different second phases to L antennae of the antenna array, wherein a second frequency of the second frequency signals is larger than a first frequency of the first frequency signals.

Abstract: Method for manufacturing a multi-band antenna package structure includes providing a first temporary substrate; forming a first dielectric material layer, and first metal patterns; forming at least one metal via; forming at least one metal pillar, and disposing an integrated circuit chip; forming a molding layer; thinning down the molding layer thus forming an integrated circuit chip layer; forming a first redistribution layer; forming a first antenna unit layer; forming a first protection layer, thus a first stacked structure formed; removing the first temporary substrate, and facing down the first stacked structure to adhere it on a second temporary substrate with a second glue layer; forming a second redistribution layer; forming a second protection layer; forming bump balls, thus a second stacked structure formed; removing the second temporary substrate with the second glue layer, facing down and mounting the second stacked structure on a substrate through the bump balls.

Abstract: A phase controller for an antenna array includes a determination circuit, determining a direction index of the antenna array, and calculating a phase index according to the direction index according to a congruence modulo equation; a switching box, selecting L first frequency signals with L different first phases among K first frequency signals with K different first phases according to the phase index, wherein L and K are integer larger than 1, and L is not larger than K; and a frequency synthesizing module, comprising L phase-coherent PLL frequency synthesizers for receiving the L first frequency signals with the L different first phases to generate L second frequency signals with L different second phases to L antennae of the antenna array, wherein a second frequency of the second frequency signals is larger than a first frequency of the first frequency signals.

Abstract: A vector modulator includes a quadrature component generator, configured to generate an input in-phase signal and an input quadrature signal according to an input radio frequency (RF) signal; a switching circuit, receiving a plurality of bits, comprising a plurality of switches controlled by the plurality of bits, configured to generate an output in-phase signal and an output quadrature signal according to the plurality of bits, where the output in-phase signal and the output quadrature signal are related to input in-phase signal and the input quadrature signal; and a combining module, configured to generate an output RF signal according to the output in-phase signal and the output quadrature signal.

Abstract: Method for manufacturing a multi-band antenna package structure includes providing a first temporary substrate; forming a first dielectric material layer, and first metal patterns; forming at least one metal via; forming at least one metal pillar, and disposing an integrated circuit chip; forming a molding layer; thinning down the molding layer thus forming an integrated circuit chip layer; forming a first redistribution layer; forming a first antenna unit layer; forming a first protection layer, thus a first stacked structure formed; removing the first temporary substrate, and facing down the first stacked structure to adhere it on a second temporary substrate with a second glue layer; forming a second redistribution layer; forming a second protection layer; forming bump balls, thus a second stacked structure formed; removing the second temporary substrate with the second glue layer, facing down and mounting the second stacked structure on a substrate through the bump balls.

Abstract: A multi-band antenna package structure includes a first redistribution layer; an integrated circuit layer, formed on the first redistribution layer, comprising at least one metal via, at least one metal pillar, an integrated circuit chip, and a molding layer, wherein the molding layer is used to fill openings formed by the metal via, the metal pillar and the integrated circuit chip which are disposed on the first redistribution layer, the metal via is electrically connected to one of the first metal patterns of the first redistribution layer; a second redistribution layer, formed on the integrated circuit layer; and a first antenna unit layer, comprising a first dielectric layer and third metal patterns formed in openings of the first dielectric layer, wherein at least one of the third metal patterns is electrically connected to one of the second metal patterns, and the third metal patterns form a first antenna unit.

Abstract: A transformer feed-back quadrature voltage controlled oscillator (QVCO) includes a first VCO; a second VCO; and a dynamic phase error correction circuit, having a plurality of coupling capacitors connected between the first and second VCOs, wherein the capacitances of the coupling capacitors are varied according to a digital control signal to correct a phase error of local oscillating (LO) signals of quadrature phases output by the first and second VCOs.

Abstract: A variable inductor which comprises a primary conductor, first and second secondary conductors and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first and second secondary conductors magnetically couple to the primary conductor. The one or more switch has two sides connected to the first or second secondary conductor, respectively. The first and second secondary conductors are formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced.

Abstract: Array antenna communication system is introduced, which is a communication system that receives a location signal generated by a mobile communication apparatus and accordingly transfers a communication signal with a corresponding phase direction. The system includes an array antenna module and a beamforming circuit. The array antenna module includes a plurality of antenna units arranged in array form. The beamforming circuit is used for receiving a plurality of location signals, a plurality of phase control signals, and transferring a plurality of output signals, wherein the beamforming circuit receives the location signal and accordingly generates the corresponding control signal, and controls the corresponding antenna unit of the array antenna module, so as to enable the antenna unit to move to a position corresponding to a phase and to transfer the plurality of output signals, thereby achieving communication signal enhancement.

Abstract: A variable inductor which comprises a primary conductor, first and second secondary conductors and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first and second secondary conductors magnetically couple to the primary conductor. The one or more switch has two sides connected to the first or second secondary conductor, respectively. The first and second secondary conductors are formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced.

Abstract: A variable inductor comprises a primary conductor, a first secondary conductor and one or more switch. The primary conductor has a first node and a second node, wherein the first node is used to connect a first external component and the second node is used to connect a second external component. The first secondary conductor magnetically couples to the primary conductor. The one or more switch has two sides connected to the first secondary conductor, respectively. The first secondary conductor is formed a single-loop structure with two or more changeable current paths which are operated by the states of the one or more switch. An integrated circuit using the variable inductor is also introduced.

Abstract: A multi-band antenna package structure includes a first redistribution layer; an integrated circuit layer, formed on the first redistribution layer, comprising at least one metal via, at least one metal pillar, an integrated circuit chip, and a molding layer, wherein the molding layer is used to fill openings formed by the metal via, the metal pillar and the integrated circuit chip which are disposed on the first redistribution layer, the metal via is electrically connected to one of the first metal patterns of the first redistribution layer; a second redistribution layer, formed on the integrated circuit layer; and a first antenna unit layer, comprising a first dielectric layer and third metal patterns formed in openings of the first dielectric layer, wherein at least one of the third metal patterns is electrically connected to one of the second metal patterns, and the third metal patterns form a first antenna unit.

Abstract: A phase controller for an antenna array includes a determination circuit, determining a direction index of the antenna array, and calculating a phase index according to the direction index according to a congruence modulo equation; a switching box, selecting L first frequency signals with L different first phases among K first frequency signals with K different first phases according to the phase index, wherein L and K are integer larger than 1, and L is not larger than K; and a frequency synthesizing module, comprising L phase-coherent PLL frequency synthesizers for receiving the L first frequency signals with the L different first phases to generate L second frequency signals with L different second phases to L antennae of the antenna array, wherein a second frequency of the second frequency signals is larger than a first frequency of the first frequency signals.

Abstract: A phase controller for an antenna array includes a determination circuit, determining a direction index of the antenna array, and calculating a phase index according to the direction index according to a congruence modulo equation; a switching box, selecting L first frequency signals with L different first phases among K first frequency signals with K different first phases according to the phase index, wherein L and K are integer larger than 1, and L is not larger than K; and a frequency synthesizing module, comprising L phase-coherent PLL frequency synthesizers for receiving the L first frequency signals with the L different first phases to generate L second frequency signals with L different second phases to L antennae of the antenna array, wherein a second frequency of the second frequency signals is larger than a first frequency of the first frequency signals.

Abstract: A transformer feed-back quadrature voltage controlled oscillator (QVCO) includes a first VCO; a second VCO; and a dynamic phase error correction circuit, having a plurality of coupling capacitors connected between the first and second VCOs, wherein the capacitances of the coupling capacitors are varied according to a digital control signal to correct a phase error of local oscillating (LO) signals of quadrature phases output by the first and second VCOs.

Abstract: A reflective modulator which comprises a coupler, two diodes and two DC block units. The coupler has an input end used to output an output signal, an output end used to output an output signal, a first load end connected to one of the diodes and a second load end connected to another one of the diodes. The DC block units connect between the diodes and the coupler for DC blocking. A message signal is selectively inputted to both of the two DC block units for operating the state of the two diodes. The two diodes turn on when the message signal is large enough. The two diodes turn off when the message signal is not large enough. The two diodes are implemented by PIN diodes. A BPSK modulator using the reflective modulator and a quadrature modulator using the BPSK modulator is also introduced.

Abstract: Array antenna communication system is introduced, which is a communication system that receives a location signal generated by a mobile communication apparatus and accordingly transfers a communication signal with a corresponding phase direction. The system includes an array antenna module and a beamforming circuit. The array antenna module includes a plurality of antenna units arranged in array form. The beamforming circuit is used for receiving a plurality of location signals, a plurality of phase control signals, and transferring a plurality of output signals, wherein the beamforming circuit receives the location signal and accordingly generates the corresponding control signal, and controls the corresponding antenna unit of the array antenna module, so as to enable the antenna unit to move to a position corresponding to a phase and to transfer the plurality of output signals, thereby achieving communication signal enhancement.

Abstract: Communication structure for communication with a mobile communication apparatus includes a signal conduction module having an array of antenna units; and a signal transceiving module including a signal transceiving unit, control unit, and power control unit. The control unit generates a driving signal to the power control unit, which generates a voltage to the signal transceiving unit; the signal transceiving unit generates a corresponding spectrum signal, transferred by the signal conduction module. The mobile communication apparatus receives the spectrum signal and transfers a first feedback signal.