| MICROELECTRONICS TECHNOLOGY INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120092092 | INTEGRAL HIGH FREQUENCY COMMUNICATION APPARATUS - An integral high frequency communication apparatus comprises a case, a waveguide apparatus having an extension portion, and a circuit board having a signal transmitting unit and a signal receiving unit. The transceiver module having two waveguide openings is retained in the case. The case has an opening through which the extension portion extends outside of the case. The integral high frequency communication apparatus can receive and transmit high frequency signals by the extension portion. | 04-19-2012 |
| 20120045997 | Radio Frequency Transceiver - A radio frequency transceiver includes a mixer circuit configured to convert an intermediate frequency signal into a radio frequency signal, a driver amplifier circuit configured to amplify the radio frequency signal from the mixer circuit, a temperature sensing circuit configured for sensing ambient temperature, and an attenuation circuit connected with the temperature sensing circuit, configured to decreasingly attenuate the radio frequency signal from the driver amplifier circuit as the ambient temperature increases. | 02-23-2012 |
| 20110286509 | DYNAMIC DIGITAL PRE-DISTORTION SYSTEM - A Dynamic Digital Pre-Distortion (DDPD) system is disclosed to rapidly correct power amplifier (PA) non-linearity and memory effects. To perform pre-distortion, a DDPD engine predistorts an input signal in order to cancel PA nonlinearities as the signal is amplified by the PA. The DDPD engine is implemented as a composite of one linear filter and N−1 high order term linear filters. The bank of linear filters have programmable complex coefficients. To compute the coefficients, samples from the transmit path and a feedback path are captured, and covariance matrices A and B are computed using optimized hardware. After the covariance matrices are computed, Gaussian elimination processing may be employed to compute the coefficients. Mathematical and hardware optimizations may be employed to simplify and reduce the number of multiplication operands and other operations, which can enable the DDPD system to fit within a single chip. | 11-24-2011 |
| 20110140804 | BAND PASS FILTER COMBINER - A band pass filter combiner carrying a broadband signal with a central frequency comprises a power divider, a high pass band filter, a low pass band filter, and a power combiner. The distance from the signal input port of the power divider to each of signal input ports of the high pass band filter and the low pass band filter is equal to a quarter of the wavelength at the central frequency. The distance from each of signal output ports of the high pass band filter and the low pass band filter to the signal output port of the power combiner is also equal to a quarter of the wavelength at the central frequency. | 06-16-2011 |
| 20110074651 | ASSEMBLY OF CLAMPING MECHANISM AND LNB AND DISH ANTENNA USING THE SAME - An assembly comprises a clamping mechanism and an LNB (low noise block down converter). The clamping mechanism includes a first clamping part, a second clamping part, and a plurality of rectangular grooves. The LNB includes a shell, at least one flexible portion, and at least one rib portion. The first clamping part and the second clamping part clasp around the LNB, and are combined with each other by at least one fastening part. The at least one flexible portion is disposed on the shell of the LNB, and the rib portion is on the flexible portion. The plurality of rectangular grooves are closely arranged in parallel on the inner surface of the second clamping part, and the rib portion is contained in one of the rectangular grooves. By rotating the combination of the first clamping part and the second clamping part, the rib portion is forced to move between the rectangular grooves and then is positioned again. During the movement, the flexible portion is temporarily deformed. | 03-31-2011 |
| 20110063810 | LOW NOISE BLOCK CONVERTER - A low noise block converter includes a first printed circuit board, a second printed circuit board, and a housing. The first printed circuit board includes a metal layer disposed on a surface of the first printed circuit board. The second printed circuit board includes at least one chip. The housing includes a support surface configured to support the first printed circuit board, and a cavity formed on the support surface and configured to receive the second printed circuit board, wherein the first printed circuit board is placed on the support surface with the metal layer facing the cavity for shielding the electromagnetic fields radiated from the at least one chip. | 03-17-2011 |
| 20110043033 | Out-Door Unit with Multiple Ports - An out-door unit with multiple ports comprises a plurality of circuit blocks, a DC-DC converter and a plurality of ports. The DC-DC converter is configured to provide current to the plurality of circuit blocks. The plurality of ports is connected to a plurality of in-door units respectively via a diode and provides current from the plurality of in-door units to the DC-DC converter via a diode respectively. At least one of the plurality of ports is connected to a first circuit block of the plurality of circuit blocks to provide current to the first circuit block. | 02-24-2011 |
| 20110032057 | Waveguide and Assembly of Waveguide and Printed Circuit Board - A waveguide, configured to attach with a printed circuit board, includes a body, a waveguide channel, at least one flange portion, and a plurality of protrusions. The waveguide channel is formed through the body. The at least one flange portion is connected with an end portion of the body. The plurality of protrusions are disposed on a surface of the at least one flange portion and a surface of the end portion and abut against the surface of the printed circuit board. | 02-10-2011 |
| 20100259462 | ANGLE ADJUSTMENT APPARATUS OF DISH ANTENNA AND DISH ANTENNA USING THE SAME - An angle adjustment apparatus for a dish antenna comprises a base, a first rotating frame, and a second rotating frame. The first rotating frame is fixed to the second rotating frame, and can rotate around the second rotating frame with a first rotating angle. The second rotating frame is fixed to the base, and can rotate around the base with a second rotating angle. The first rotating frame comprises at least one first arc-shaped slot, and the second rotating frame comprises at least one second arc-shaped slot corresponding to the first arc-shaped slot. A fastener passes through the first arc-shaped slot and the second arc-shaped slot so as to attach the first rotating frame and the second rotating frame. | 10-14-2010 |
| 20100201599 | ADJUSTMENT METHOD FOR DISH ANTENNA - A dish antenna adjustment method is performed as follows. A dish antenna angle adjustment apparatus is provided; the dish antenna angle adjustment apparatus having a base member, a first rotation member and a second rotation member. The first rotation member is pivotally connected to the second rotation member, and rotates by a first rotation angle relative to the second rotation member. The second rotation member is pivotally connected to the base member, and rotates by a second rotation angle relative to the base member. A first rotating angle adjustment mechanism is connected to the angle adjustment apparatus of the dish antenna, e.g., the first rotating angle adjustment mechanism connects the first rotation member and the second rotation member. The first rotating angle adjustment mechanism adjusts the first rotation angle between the first and second rotation members. The first rotating angle adjustment mechanism is detached from the angle adjustment apparatus, and the detached first rotating angle adjustment mechanism can be used for adjustment of another dish antenna. | 08-12-2010 |
| 20100177009 | ANGLE ADJUSTMENT APPARATUS OF DISH ANTENNA AND DISH ANTENNA USING THE SAME - An angle adjustment apparatus for a dish antenna comprises a base, a first rotating frame, a second rotating frame, and a second rotation angle adjustment mechanism. The first rotating frame is fixed to the base, and can relatively rotate around the base with a first rotating angle. The second rotating frame is fixed to the first rotating frame, and can relatively rotate around the first rotating frame with a second rotating angle. The second rotation angle adjustment mechanism comprises a first screw rod, a screw nut post, and a second screw rod. One end of the first screw rod is fixed to the first rotating frame, and the other end is equipped with first threads and engaged with the screw nut post. One end of the second screw rod pivots on the second rotating frame, and the other end is equipped with second threads and engaged with the screw nut post. The first threads and second threads have different screw directions, or have the same screw direction but with different thread pitches. | 07-15-2010 |
| 20100149781 | WATERPROOF COMMUNICATION APPARATUS - An electromagnetic interference shielding apparatus for a signal transceiver comprises a metal cover, a chassis, adhesive, and a waveguide output hole. A first combination portion having a first curved section is disposed on the edge of the metal cover. The first curved section of the first combination portion includes at least one opening The edge of the chassis includes a second combination portion having a groove corresponding to the first combination portion. A lateral slot is at the location of the second combination portion corresponding to the opening The adhesive combines the first combination portion and the second combination portion. A waveguide is disposed in the chassis, and extends to the exterior of the chassis through the waveguide output hole. A flat tool can be inserted into a space between one of the openings and a corresponding lateral slot to separate the metal cover from the chassis. | 06-17-2010 |
| 20100109820 | WATERPROOF COMMUNICATION APPARATUS - A waterproof communication apparatus comprises a core part and an external part. The core part is a combination having at least one seam, and is used to transmit electromagnetic waves. The external part covers the core part to prevent environmental moisture from entering the inside of the communication apparatus through the seam. A pair of engaging parts having complementary shapes is equipped with the seam of the combination so as to further prevent the molten material of the external part from entering the inside of the communication apparatus during the manufacturing process. In another embodiment, the core part and external part are made of metals and are combined by a metallurgic method. | 05-06-2010 |
| 20100061690 | WATERPROOF COMMUNICATION APPARATUS - A waterproof communication apparatus comprises a core assembly having at least one seam, configured to transmit an electromagnetic wave; and a seamless enclosure enclosing the core assembly, configured to prevent the ingress of atmospheric moisture through the at least one seam into the inside of the core assembly. In one embodiment, the core assembly and the enclosure are made of metallic materials, and a metallurgical bond is formed between the core assembly and the enclosure. | 03-11-2010 |
| 20100054364 | DIGITAL PRE-DISTORTION TECHNIQUE USING NONLINEAR FILTERS - A system and method for stabilizing a coefficient set used by a digital predistortion (DPD) engine to apply pre-distortion to a transmit signal and cancel distortion generated by a distorting element or distorting system when transmitting the transmit signal, including obtaining an initial coefficient set; rotating the initial coefficient set to maintain a phase of fundamental components (w | 03-04-2010 |
| 20100039186 | ADJUSTABLE ASSEMBLY APPARATUS OF WAVEGUIDE MULTIPLEXER AND WAVEGUIDE PHASE SHIFTER - An adjustable assembly apparatus includes a waveguide phase shifter and a waveguide multiplexer. The waveguide phase shifter has a first flange structure and the waveguide multiplexer has a second flange structure. The second flange structure and the first flange structure are embedded, and the polarization directions of the waveguide phase shifter and the waveguide multiplexer are orthogonal. In an embodiment, the first flange structure includes a bulge, the second flange structure includes a recess, and the bulge is embedded in the recess. The polarization directions of the bulge of the waveguide phase shifter and the recess of the waveguide multiplexer differ by 90 degrees. | 02-18-2010 |
| 20100029199 | INTEGRAL HIGH FREQUENCY COMMUNICATION APPARATUS - An integral high frequency communication apparatus comprises a case, a waveguide apparatus having an extension portion, and a transceiver module having two waveguide openings. The transceiver module having two waveguide openings is retained in the case. The case has an opening through which the extension portion extends outside of the case. The integral high frequency communication apparatus can receive and transmit high frequency signals by the extension portion. | 02-04-2010 |
| 20100026423 | WAVEGUIDE - A waveguide includes a first waveguide member and a second waveguide member. The second waveguide member is combined with the first waveguide member to form a through hole. The first waveguide member includes a first shell and two first wing portions connected to the first shell, and the two first wing portions form a first plane. The second waveguide member includes a second shell and two second wing portions connected to the second shell, and the two second wing portions form a second plane. Bulged strips are formed at the inner rims of the second plane neighboring the through hole and extend along a longitudinal direction of the through hole, and the bulged strips protrude the second plane. | 02-04-2010 |
| 20100020900 | DIGITAL PRE-DISTORTION TECHNIQUE USING NONLINEAR FILTERS - A method and computer program product for operating a linearizer for a circuit, including generating a set of coefficients via a characterizer; predistorting a signal input to the circuit responsive to the coefficients and generating a linearized output in response thereto; filtering the signal through a linear digital filter having linear digital filter taps, each tap other than a first tap being successively delayed by one delay unit; generating powers of the signal; inputting the generated powers of the signal through tapped delay lines, each line having nonlinear digital filter taps, each tap other than a first tap being successively delayed by one delay unit; applying the coefficients to the linear and nonlinear digital filter taps; summing each of the nonlinear digital filter taps corresponding to a certain number of delay units; and adding the sum of each of the delay units to a particular linear digital filter tap. | 01-28-2010 |
| 20090174506 | WAVEGUIDE AND METHOD FOR ADJUSTING WAVEGUIDE STRUCTURE THEREOF - A waveguide comprises a connecting part, a main chamber and a buffer. The connecting part is connected to the main chamber via the buffer. The side length of the junction between the connecting part and the buffer is smaller than that of the junction between the buffer and the main chamber. | 07-09-2009 |
| 20090168389 | HIGH FREQUENCY COMMUNICATION APPARATUS AND WATERPROOF STRUCTURE THEREOF AND MANUFACTURING METHOD FOR WATERPROOF STRUCTURE - A waterproof structure of a high frequency communication apparatus accommodates a waveguide, the waveguide comprising a waveguide channel and an extending portion connected to the waveguide channel. The waterproof structure comprises a case body and a case cover. The case cover bonds with the case body to form an inner space accommodating the waveguide and an opening through which the extending portion penetrates outwards. The case body and the case cover are bonded by glue, and the extending portion and the case body and the case cover around the opening are bonded by glue, thereby preventing moisture incursion. | 07-02-2009 |
| 20090163169 | LOW-NOISE BLOCK - A low-noise block converter comprises a low-noise amplifier, a local oscillator, a mixer, an IF-amplifier and a regulator. The low-noise amplifier amplifies a high-band received signal. The local oscillator generates a local-frequency signal. The mixer transforms the high-band received signal into an intermediate-frequency signal by mixing the high-band received signal with the generated local-frequency signal. The IF-amplifier amplifies the intermediate-frequency signal. The regulator is connected to the IF-amplifier to provide a steady current (or voltage) to the local oscillator, the mixer and the low-noise amplifier. | 06-25-2009 |
| 20090163149 | TRANSCEIVER FOR RADIO-FREQUENCY COMMUNICATION - A transceiver for radio-frequency communication comprises a waveguide, a transmitting port, a receiving port and a receiver load termination. The waveguide receives and transmits radio-frequency signals. The transmitting port is connected to the waveguide and transmits the radio-frequency signals to the waveguide. The receiving port is connected to the waveguide and receives the radio-frequency signals from the waveguide. The receiver load termination is connected to the waveguide and removes the vertical polarization components of the receiving radio-frequency signals. The receiver load termination includes a filtering unit to reduce the energy of the transmitting radio-frequency signals entering the receiver load termination. | 06-25-2009 |
| 20090115579 | SIGNAL PROCESSING APPARATUS FOR RECEIVING RFID SIGNAL AND METHOD THEREOF - A signal processing apparatus for receiving RFID signal comprises a first low-pass filter, a first down-sampler, a first comparator and a first waveform converter. The first low-pass filter filters the RFID signal. The first down-sampler down-samples the filtered RFID signal. The first comparator generates a new signal for value determination according to the down-sampled RFID signal. The first waveform converter converts the waveform of the new signal for the following process. | 05-07-2009 |
| 20080307465 | SYSTEM OF SATELLITE SIGNAL DOWN CONVERSION AND RECEPTION AND SIGNAL TRANSMISSION METHOD THEREOF - A system of satellite signal down conversion and reception comprises a low noise block down converter and a plurality of receivers. The low noise block down converter simultaneously and periodically sends a reference timing command to the plurality of receivers. Each of the plurality of receivers calibrates its timing based on the reference timing command to generate a plurality of data frames. Each of the data frames includes a plurality of time slots, and a time slot is designated to transmit data between the receiver and the low noise block down converter. Furthermore, each of the plurality of receivers uses a different time slot. | 12-11-2008 |
| 20080303612 | WAVEGUIDE STRUCTURE - A waveguide structure comprises a first waveguide portion, a second waveguide portion and a third waveguide portion. The first, second and third waveguide portions are connected in a series; signals feed into the first waveguide portion and then propagate through the first, second and third waveguide portions in sequence; and the cross sections of the first to third waveguide portions descend in size. | 12-11-2008 |
| 20080272865 | GAIN COMPENSATION CIRCUIT - A gain compensation circuit comprises a first amplifier, a second amplifier, a filter, a first attenuator, a second attenuator and a third attenuator. The first amplifier is configured to amplify an input signal of the microwave signal processor. The filter is disposed between the first and second amplifiers. The first attenuator is disposed between the first amplifier and the filter for reducing return loss of the microwave signal processor. The second attenuator is disposed between the second amplifier and the filter for reducing return loss of the microwave signal processor. The third attenuator is electrically connected to the output of the second amplifier for reducing noise figure of the microwave signal processor and providing first and second gain compensations. The first gain compensation keeps the gain of the microwave signal processor constant under various temperatures, and the second gain compensation adjusts a nominal gain of the microwave signal processor. | 11-06-2008 |
