Abstract: Disclosed herein are devices and methods to reduce unwanted CIM3 emission in a wireless communication device, such that the transmit (TX) power level applied in a RU can be increased without exceeding a regulatory emission requirement. In some aspects, unwanted emission may be reduced by shifting or changing local oscillator (LO) frequencies during TX operation. Some embodiments are directed to a fast-locking PLL with adjustable bandwidth that can be controlled to increase the PLL bandwidth during the RX to TX transition to provide a fast locking to a new LO frequency. Some aspects are directed to configuring an LO frequency shift amount for different RUs when multiple RUs are allocated within a frequency band.

Abstract: Disclosed herein are devices and methods to reduce unwanted CIMS emission in a wireless communication device, such that the transmit (TX) power level applied in a RU can be increased without exceeding a regulatory emission requirement. In some aspects, unwanted emission may be reduced by shifting or changing local oscillator (LO) frequencies during TX operation. Some embodiments are directed to a fast-locking PLL with adjustable bandwidth that can be controlled to increase the PLL bandwidth during the RX to TX transition to provide a fast locking to a new LO frequency. Some aspects are directed to configuring an LO frequency shift amount for different RUs when multiple RUs are allocated within a frequency band.

Abstract: A fastening device is used to snap and carry an electronic device which includes a plurality of positioning holes on its bottom side. The fastening device has a sliding unit and a carrier unit. The sliding unit is used to connect with and carry the electronic device and includes two guiding rails, a pushing portion, and a plurality of positioning pins. The carrier unit is connected with the sliding unit and comprises a plate, a plurality of first limiting units, a plurality of second limiting units, and a link-handle. Through the fastening device, the assembly process for the electronic device is simplified.

Abstract: A fastening device is used to snap and carry an electronic device which includes a plurality of positioning holes on its bottom side. The fastening device has a sliding unit and a carrier unit. The sliding unit is used to connect with and carry the electronic device and includes two guiding rails, a pushing portion, and a plurality of positioning pins. The carrier unit is connected with the sliding unit and comprises a plate, a plurality of first limiting units, a plurality of second limiting units, and a link-handle. Through the fastening device, the assembly process for the electronic device is simplified.

Abstract: A locking device having positioning and floating adjustable capability is provided, which includes a positioning part, disposed on a lateral side of an apparatus, the lateral side has at least one fixing opening, having a positioning opening at a periphery of the at least one fixing opening, and at least one side of the positioning opening has a necking channel; a bracket, having a sliding slot while being disposed on a frame; and a locking element, slidably coupled to the sliding slot, and enters the positioning opening under the guide of the necking channel while sliding in the sliding slot, so as to be aligned with the fixing opening. Moreover, the locking device is applicable to an apparatus having different fixing opening locations, so that the locking element can be aligned with the fixing opening easily and conveniently, thereby locking the apparatus to the bracket.

Abstract: A locking device having positioning and floating adjustable capability is provided, which includes a positioning part, disposed on a lateral side of an apparatus, the lateral side has at least one fixing opening, having a positioning opening at a periphery of the at least one fixing opening, and at least one side of the positioning opening has a necking channel; a bracket, having a sliding slot while being disposed on a frame; and a locking element, slidably coupled to the sliding slot, and enters the positioning opening under the guide of the necking channel while sliding in the sliding slot, so as to be aligned with the fixing opening. Moreover, the locking device is applicable to an apparatus having different fixing opening locations, so that the locking element can be aligned with the fixing opening easily and conveniently, thereby locking the apparatus to the bracket.

Abstract: An apparatus and a method for adaptively calculating a start position of a series of symbols are provided. The method is applied to a frame synchronization circuit that implements the apparatus for calculating the symbolic start position of a packet-switching communication system. Even under the situations such as higher frequency offset, the frequency offset value approaching zero or unstable frequency offset, the frame synchronization circuit using the claimed method still can estimate the symbolic start position. The preferred method includes a first step of retrieving the signals in a unit of packets, and calculating their delay correlation value. Next, a control circuit is incorporated to retrieve multiple groups of symbols, and to set the parameters of the systems as a basis for identifying the system's property. After that, it's to estimate the symbolic start position.

Abstract: A detachable assembly including a body and a panel is provided. The body is suitable for being disposed on a carrying surface, and the body includes a bottom plate and at least one first supporting element. The bottom plate has at least one opening having a first side and a second side. The first supporting element is connected to the first side of the opening. The first supporting element is at an angle with the bottom plate. The panel is detachably disposed at the body. The panel has a bottom portion and at least one second supporting element disposed on the bottom portion. When the panel is partially detached from the body, the second supporting element passes through the opening and leans against the first supporting element and the second side of the opening so that the panel will not drop and cause some damage.

Abstract: An apparatus and method for estimating and compensating sampling frequency offset are disclosed. Particularly, a linear mathematical scheme is employed to calculate the related phase difference for saving use of multipliers and storage circuit used for sampling frequency offset estimation and compensation in the conventional art. The preferred embodiment of the invention has a first step to receive signals by the offset estimating circuit. Next, the phase value for each signal is calculated, and the pilot signal therein is retrieved. Next, a phase difference is obtained by subtraction operation between the received symbols and the delayed pilot symbols. And a circuit for storing the phase differences is incorporated. Next, a phase difference between the adjacent symbols is obtained by accumulating the phases and processing the least-error-sum-of-squares operation. Therefore, an estimation value of the sampling frequency offset of a communication system is obtained, and further to compensate the offset.

Abstract: A detachable assembly including a body and a panel is provided. The body is suitable for being disposed on a carrying surface, and the body includes a bottom plate and at least one first supporting element. The bottom plate has at least one opening having a first side and a second side. The first supporting element is connected to the first side of the opening. The first supporting element is at an angle with the bottom plate. The panel is detachably disposed at the body. The panel has a bottom portion and at least one second supporting element disposed on the bottom portion. When the panel is partially detached from the body, the second supporting element passes through the opening and leans against the first supporting element and the second side of the opening so that the panel will not drop and cause some damage.

Abstract: A standoff includes a supporter, an elastic arm, a pin and a fixing part. The supporter supports the first surface of a first substrate. The elastic arm is located apart from the supporter, and this elastic arm is inserted into a fixing hole of the first substrate. The pin is connected to the elastic arm to press a second surface of the first substrate opposite to the first surface of the first substrate. The fixing part connects the supporter and the elastic arm, and this fixing part is fixed on a second substrate.

Abstract: An expansion card capable of installing a module on a mainboard is provided. The expansion card includes a first circuit board for the module to be installed on, a second circuit board inserted to the mainboard, a flexible board electrically connecting the first circuit board and the second circuit board, and a fixing element fastened on the junction where the flexible board connects the first circuit board and the second circuit board.

Abstract: The present invention provides a fixing mechanism for positioning and fixing a storage device on a casing plane. The storage device includes two opposite positioning sides each disposed with a fixing pillar. The fixing mechanism includes two positioning boards and a fixing leaf spring. The two positioning boards are disposed on the casing plane and correspond in position to the positioning sides. A guiding groove in each of the positioning boards guides the fixing pillar to an intended position. Flanking at least one of the positioning boards, the fixing leaf spring is fixedly disposed on the positioning board at one end, has a moving end extending along the lengthwise direction of the positioning board at the other end, and has a fixing hole corresponding in position to the guiding groove and penetratable by the fixing pillar slidable into the guiding groove, thus fixing the storage device to the casing plane.

Abstract: A packet detecting circuit detects a packet inputting time via calculating a delay correlation function and an autocorrelation function. In order to prevent a DC offset from affecting the calculation of the delay correlation function and the autocorrelation function, when the packet detecting circuit calculates the delay correlation function and the autocorrelation function, the packet detecting circuit will calculate and remove the error of the delay correlation function and the autocorrelation function produced by a DC offset. Then the packet detecting circuit calculates a packet triggering value according to the delay correlation function and the autocorrelation function for detecting the packet inputting time more precisely.

Abstract: An assessment system classifies a plurality of channels to several channel groups according to the characteristics of the channel groups and assesses the status of each channel by a corresponding method, such as a period comparison method or a SNR comparison method, defined based on the channel groups. Hence, the present invention allows simpler computations to be made and a simpler circuit structure to be used.

Abstract: A lid body fixing mechanism is disclosed to fix a lid body that seals an opening of a mechanical housing. The lid body has a through hole. The lid body fixing mechanism includes a blocking unit installed on an inner side of the mechanical housing and corresponding to the through hole, an operation unit installed in the through hole and pivotally connected to the lid body, and an elastic unit installed in an inner wall of the lid body. The operation unit has an operation end, a propping end, and a hook portion located on the operation end for positioning at the blocking unit. By lifting the operation unit, the hook portion is departed from the blocking unit. The elastic unit has a supporting portion protruding into the through hole and supporting the propping end, for bouncing the lifted operation unit back to an initial position.

Abstract: The present invention provides a lid fastening mechanism for fastening a lid of a device to a casing opening between two opposing flanks of the device. At least one side of the lid includes a lid flank overlapping an inner side of one of the flanks of the device. The lid flank is slidable to and fro relative to the flank of the device. The lid fastening mechanism includes a fastening post protrudingly disposed on the inner side of the flank of the device, a movement groove disposed at a position of the lid flank corresponding to the fastening post, and a snap fastener disposed to extend along an inner side of the lid flank and formed with a snap hole for snap-fit engagement with the fastening post. The fastening post can slide into the snap hole via the movement groove and thereby fasten the lid to the casing opening.

Abstract: The present invention provides a fixing mechanism for positioning and fixing a storage device on a casing plane. The storage device includes two opposite positioning sides each disposed with a fixing pillar. The fixing mechanism includes two positioning boards and a fixing leaf spring. The two positioning boards are disposed on the casing plane and correspond in position to the positioning sides. A guiding groove in each of the positioning boards guides the fixing pillar to an intended position. Flanking at least one of the positioning boards, the fixing leaf spring is fixedly disposed on the positioning board at one end, has a moving end extending along the lengthwise direction of the positioning board at the other end, and has a fixing hole corresponding in position to the guiding groove and penetratable by the fixing pillar slidable into the guiding groove, thus fixing the storage device to the casing plane.