Abstract:
A subsampling motion detector(100, 150, 200, 300) configured to detect motion information of an object (24) under measurement receives a first wireless radio frequency (RF) signal and transmits a second wireless RF signal, the first wireless RF signal being generated by reflecting the second wireless RF signal from the object (24). A controllable oscillator (18, 58) outputs an oscillation signal, wherein the first wireless RF signal is injected to the controllable oscillator (18, 58) for controlling the controllable oscillator (18, 58) through injecting locking. The subsampling motion detector (100, 150, 200, 300) further includes a subsampling phase detector (SSPD) (12, 112, 202) generating a control signal according to the oscillation signal generated by the controllable oscillator (18, 58) and a reference frequency (fXTAL), the SSPD outputting the control signal to the controllable oscillator (18, 58) for controlling the controllable oscillator (18, 58), the oscillation signal of the controllable oscillator (18, 58) being locked to a multiple of the reference frequency (fXAL) and the control signal representing the motion information of the object (24).
Abstract:
The invention provides an electronic device and method for fabricating the same, and a spiral inductor device and method for fabricating the same. The electronic device includes a substrate and a conductive trace pattern formed on the substrate, wherein the conductive trace pattern has an opening to expose the substrate.
Abstract:
A method for providing error-resilient video content may include receiving video data reflective of multiple video frames; encoding the video data to generate a plurality of packets representing a video frame; transmitting the first group of packets to at least two receivers (110); receiving feedback information regarding receiving status of respective ones of the plurality of packets; examining error indications regarding the at least two receivers (110) based on the feedback information and implementing a first error-correction policy if a variation in the error indications among the at least two receivers (110) is below a first error threshold and a second error-correction policy if the variation is above the first error threshold. At least one of the first and second error-correction policies includes transmitting or retransmitting at least one packet using a coding scheme different from a scheme in encoding the plurality of packets already.
Abstract:
A bulk acoustic wave (BAW) resonator (38) includes a substrate (30), and two electrodes (32, 36) stacked on the substrate (30), and at least one piezoelectric layer (34) interposed between the two electrodes (32, 36). The two electrodes (32, 36) and the piezoelectric layer (34) are at least partially overlapped with each other in a vertical projection direction, and one of the two electrodes (32, 36) has a plurality of openings (32A, 36A).
Abstract:
An oscillator circuit having a source of an oscillating signal, a tank circuit including an inductor (18, 420, 421) and a capacitor (18, 420, 421), and a discretely switchable capacitance module (14, 314) configured to control an amount of capacitance in the oscillator circuit. The discretely switchable capacitance module (14, 314) includes, a capacitor (22, 322) coupled between a first node (41, 341) and a second node (42, 342), a switch (24, 320) coupled between the second node (42, 322) and a third node (43, 343); and a DC feed circuit (28, 328, 329), having a first end (28a, 328a, 329a) coupled to the second node (42) and a second end (28b, 328b, 329b) configured to receive a first or second control signal (30, 330). The control node (25, 325) of the switch (24, 320) is tied to a predetermined bias voltage (26, 326). When the first control signal (30, 330) is applied, the capacitor (22) is coupled between the first node (41, 341) and the third node (43, 343) via the switch (24, 320), and when the second control signal (30, 330) is applied the capacitor (22) is decoupled from the inductor (18, 420, 421).
Abstract:
A voltage regulator (30) includes an amplifier (310), a power device (320), a delay signal generator (340), and a voltage-generating circuit (330). The amplifier (310) generates a control signal according to a reference voltage and a feedback voltage. The power device (320) generates the output voltage by regulating the output current according to the switch control signal. The delay signal generator (340) generates a plurality of sequential delay signals each having distinct delay time with respect to an externally applied power-on burst signal. The voltage-generating circuit (330) provides an equivalent resistance for generating the feedback voltage corresponding to the output voltage, and regulates the output voltage by adjusting the equivalent resistance according to the plurality of sequential delay signals.
Abstract:
A power amplifier (600, 700) integrated circuit, which generates an RF output signal by amplifying an RF input signal, includes a thermal-sensing circuit(620, 720), a feedback circuit(630, 730), a logic judging circuit(650, 750), an adjusting circuit(640, 740), and an amplifying circuit(OP1-OPn). The thermal-sensing circuit (620, 720) generates a thermal sensing signal according to the operational temperature, and the feedback circuit (630, 730) generates a power compensation signal according to power variations in the RF output signal. The logic judging circuit (650, 750) outputs a compensation signal according to the thermal sensing signal and the power compensation signal. The adjusting circuit (640, 740) adjusts the level of the RF input signal according to the compensation signal, thereby generating a corresponding 1st stage RF signal. The amplifying circuit(OP1-OPn) can amplify the 1st stage RF signal, thereby generating the corresponding RF output signal.
Abstract:
A radio frequency power amplifier includes an input terminal, at least two amplifier paths, an asymmetric power combination circuit, and an output terminal. The input terminal receives a radio frequency signal. Each of the amplifier paths is coupled to the input terminal. Each of the amplifier paths amplifies the radio frequency signal to generate a corresponding amplified radio frequency signal. The asymmetric power combination circuit is coupled to the amplifier paths and combines the amplified radio frequency signals generated by the amplifier paths to generate a combined radio frequency signal. The output terminal outputs the combined radio frequency signal. Each of the amplifier paths generates the corresponding amplified radio frequency signal simultaneously, and a reverse isolation of each of the amplifier paths is better than about 35 dB.