Abstract:
A radio frequency (RF) front-end circuit and an operating method thereof are provided. The proposed RF front-end circuit includes a first linear amplifier, a second linear amplifier, and a calibration unit. The first linear amplifier performs a high-frequency amplification on a RF signal to generate an amplified RF signal, and down-converts the amplified RF signal into an intermediate frequency (IF) signal. The second first linear amplifier performs a low-frequency amplification on the IF signal to generate an amplified IF signal. The calibration unit is coupled to the first and the second linear amplifiers, and receives a voltage gain fed back from the second linear amplifier. Then, the calibration unit performs an auto-calibration procedure according to the voltage gain fed back from the second linear amplifier to search for an input current value of the first linear amplifier, which correspondingly maximizes the voltage gain of the first amplifier.
Abstract:
A method of manufacturing a nanoparticle chain is disclosed. The method comprises the steps of: providing a single-stranded circular primer with a determined length, and amplifying the single-stranded circular primer into single-stranded DNA nanotemplate by an isothermal nucleotide amplification reaction such that an end of the single-stranded DNA nanotemplate is fixed to a surface of a substrate; and adding a single-stranded DNA probe conjugated with nanoparticle at one end of which, and attaching the single-stranded DNA probe to the corresponding sequence on the single-stranded DNA nanotemplate to form a nanoparticles chain. The method of manufacturing a nanoparticle chain further comprises providing a fluid, and the flowing direction of the fluid controls the aligning direction of the nanoparticle chain. Wherein, the inter-nanoparticle distance of the nanoparticle chain can be adjusted by adjusting a reaction temperature or adding the single-stranded DNA probe without conjugating with nanoparticles.
Abstract:
Methods and apparatus for correcting quantization errors in signal reception based on estimated network loading including solutions for preserving cellular network performance in low noise, high interference environments. In one embodiment, a data channel is amplified with respect to other signals based on network load during periods of relatively low network utilization. Dynamic modification of the data channel's power level is configured to overcome quantization errors, rather than the true noise floor (which is insignificant in low noise environments). Such solutions provide both the fidelity necessary to enable high degrees of unwanted signaling rejection, while still preserving data channel quality.
Abstract:
A method and system for quickly retrieving the information service on a mobile terminal, adopt the structure of client/server. The method comprises: the user is directly interactive with a server and retrieves the information service via the client module bound at the terminal; the user directly enters a keyword on the desktop of the terminal; the client module queries the client database, server-side database and server-side searching device respectively, based on the present service mode and the information entered by the user, obtains the corresponding network service and content resource, and selects the relevant network as the service carrier based on the service mode, directs the user to enter these network resources to obtain the information service directly.
Abstract:
An equalized capacitive touchpad and a touch positioning method for a capacitive touchpad use an equalizer to correct a sensed value detected from a sensing line of the capacitive touchpad, to thereby offset the attenuation of the sensed value due to the impedance of the sensing line. Thus, the sensed values generated from different positions along a sensing line are equalized, and the touch positioning accuracy of the capacitive touchpad is improved.
Abstract:
According to an embodiment of the invention, a chip package is provided. The chip package includes a substrate having an upper surface and a lower surface, a plurality of conducting pads located in the substrate or under the lower surface thereof, a dielectric layer located between the conducting pads, a hole extending from the upper surface towards the lower surface of the substrate and exposing a portion of the conducting pads, and a conducting layer located in the hole and electrically contacting the conducting pads.
Abstract:
An inspection device includes a base to receive an electronic device, a supporting member, a first adjustment member, a second adjustment member, and an inspecting member installed on the second adjustment member. The supporting member includes a horizontal plate movable relative to the base, a guideway fixed on the horizontal plate, and a guiding block movably mounted on the guideway. The first adjustment member includes a fixing plate fixed on the guiding block, and an adjusting plate rotatably attached to the fixing plate, and movable and rotatable relative to the base. The second adjustment member is fixed on the adjusting plate. Movement and rotation of the adjusting plate relative to the base allow movement and rotation of the second adjustment member relative to the base to allow movement and rotation of the inspecting member relative to the electronic device.
Abstract:
The invention relates to light-emitting devices, and related components, systems and methods. In one aspect, the present invention is related to light emitting diode (LED) light extraction efficiency. A non-limiting example, the application teaches a method for improving light emitting diode (LED) extraction efficiency, by providing a nano-rod light emitting diode; providing quantum wells; and reducing the size of said nano-rod LED laterally in the quantum-well plane (x and y), thereby improving LED extraction efficiency.
Abstract:
A drop test apparatus includes a base panel, at least one height adjustment member attached to the base panel, and at least one angle adjustment member pivotally attached to the at least one height adjustment member. The at least one height adjustment member has a portion protruding upward from the base panel. A height of the portion is variable. The at least one angle adjustment member is configured for supporting a device thereon and capable of rotating to different angles.
Abstract:
A lateral thermal dissipation LED and a fabrication method thereof are provided. The lateral thermal dissipation LED utilizes a patterned metal layer and a lateral heat spreading layer to transfer heat out of the LED. The thermal dissipation efficiency of the LED is increased, and the lighting emitting efficiency is accordingly improved.