Abstract: A transmission line can include a first conductive line, a second conductive line, a signal line disposed between the first conductive line and the second conductive line, with a first gap between the signal line and the first conductive line, and a second gap between the signal line and the second conductive line. A first shield can be disposed directly over a portion of the first gap, and a second shield can be disposed directly over a portion of the second gap. A slot can separate the first shield from the second shield. The transmission line can be a coplanar waveguide.

Abstract: A transmission line can include a first conductive line, a second conductive line, a signal line disposed between the first conductive line and the second conductive line, with a first gap between the signal line and the first conductive line, and a second gap between the signal line and the second conductive line. A first shield can be disposed directly over a portion of the first gap, and a second shield can be disposed directly over a portion of the second gap. A slot can separate the first shield from the second shield. The transmission line can be a coplanar waveguide.

Abstract: Aspects of this disclosure relate to hybrid acoustic LC filter with harmonic suppression. The hybrid acoustic LC filter includes a hybrid passive/acoustic and a non-acoustic LC filter cascaded with the hybrid passive/acoustic filter. The hybrid passive/acoustic filter can be configured to filter a radio frequency signal. The hybrid passive/acoustic filter can include acoustic resonators and a non-acoustic passive component. The non-acoustic LC filter can be configured to suppress a harmonic of the radio frequency signal. The non-acoustic LC filter can be a low pass filter or a harmonic notch filter, for example. Related multiplexers, wireless communication devices, and methods are disclosed.

Abstract: Aspects of this disclosure relate to a multiplexer with a hybrid acoustic passive filter. The multiplexer includes a plurality of filters configured to filter respective radio frequency signals, a shared filter coupled between each of the plurality of filters and a common node, and a radio frequency filter coupled to the common node. At least a first filter of the plurality of filters includes acoustic resonators and a non-acoustic passive component. Related multiplexers, wireless communication devices, and methods are disclosed.

Abstract: Provided is a composition comprising aflibercept and a variant thereof, wherein the variant is a truncation variant with a truncated VEGF binding portion of aflibercept, and wherein the content of the truncation variant is less than or equal to about 20% by mass percentage. Also provided is a pharmaceutical formulation comprising the composition, and a method for preparing the same. Further, provided are a method for detecting the variant and use of the variant in quality inspection or quality control of an aflibercept-containing product.

Abstract: A multi-chip module, a packaged module and a wireless device are provided. The multi-chip module comprises a plurality of layers including a first layer, a second layer and a third layer, said second layer positioned between the first layer and third layer; a low noise amplifier circuit distributed across the plurality of layers and including a first inductor in the first layer and a transistor; and a shielding plate spanning at least a portion of the second layer and overlapping at least a portion of the first inductor when viewed from a direction perpendicular to the plurality of layers, said shielding plate being electrically connected to a source terminal or emitter terminal of the transistor. The shielding plate alters a parasitic capacitance in the low noise amplifier circuit, resulting in an improved input impedance of the low noise amplifier circuit for better input matching.

Abstract: Doherty power amplifiers with an inductor-capacitor (LC) lattice for impedance inversion are disclosed. In certain embodiments, a Doherty power amplifier includes a carrier amplifier, a peaking amplifier, and an LC lattice that serves as an impedance inverter for combining a differential carrier signal from the carrier amplifier with a differential peaking signal from the peaking amplifier. The LC lattice can include series inductors and cross capacitors connected to form a lattice, or series capacitors and cross inductors connected to form the lattice.

Abstract: A method of operating a fall detection system is disclosed. The system comprises at least one fall detection sensor communicatively connected to an alarm device. The fall detection system is configured to have a particular operating mode of raising no alarm when a specified activity is detected by the at least one fall detection sensor. The method comprises the steps of: actuating the particular operating mode of the fall detection system; controlling the fall detection sensor to monitor activities of the user; exiting the particular operating mode of the fall detection system when no activity is detected for a defined period of time.

Abstract: Antenna systems with a frequency range 2 (FR2) antenna array integrated into a frequency range 1 (FR1) antenna are provided. In certain embodiments, a mobile device includes an antenna configured to handle a first radio frequency signal of a first frequency, the antenna including an antenna array configured to handle a plurality of second radio frequency signals of a second frequency that is greater than the first frequency. The mobile device further includes a front end system including a first signal conditioning circuit connected to the antenna and configured to condition the first radio frequency signal, and a plurality of second signal conditioning circuits connected to the antenna array and configured to condition the plurality of second radio frequency signals.

Abstract: Provided is a composition comprising aflibercept and a variant thereof, wherein the variant is a truncation variant with a truncated VEGF binding portion of aflibercept, and wherein the content of the truncation variant is less than or equal to about 20% by mass percentage. Also provided is a pharmaceutical formulation comprising the composition, and a method for preparing the same. Further, provided are a method for detecting the variant and use of the variant in quality inspection or quality control of an aflibercept-containing product.

Abstract: Crossbar switches for coarse phase shifting are disclosed. In certain embodiments, a mobile device includes an antenna array including a plurality of antennas. The mobile device further includes a front end system coupled to the antenna array and including a plurality of signal conditioning circuits each including a phase shifter. The plurality of signal conditioning circuits each provide phase shifting to a respective one of a plurality of radio frequency signals based on a fine control signal. The front end system further includes a crossbar switch coupled to the plurality of signal conditioning circuits and configured to provide phase shifting to the plurality of radio frequency signals based on a coarse control signal.

Abstract: An impedance matching apparatus for providing impedance matching for an RF component. The apparatus includes a balun transformer circuit having a primary coil at an input side of the balun transformer circuit. The primary coil can be connected to a signal source to receive an input signal from the signal source.

Abstract: Power amplifier supply networks with harmonic terminations are disclosed. In certain embodiments, a power amplifier system includes a first power amplifier that amplifies a first radio frequency (RF) signal of a first fundamental frequency, a second power amplifier that amplifies a second RF signal of a second fundamental frequency, and a power amplifier supply network that distributes a power amplifier supply voltage to the first power amplifier at a first distribution node and to the second power amplifier at a second distribution node. The power amplifier supply network includes a first harmonic termination circuit connected to the first distribution node that provide an open circuit at about twice the first fundamental frequency, and a second harmonic termination circuit connected to the second distribution node and that provides an open circuit at about twice the fundamental frequency.

Abstract: Provided is a composition comprising aflibercept and a variant thereof, wherein the variant is a truncation variant with a truncated VEGF binding portion of aflibercept, and wherein the content of the truncation variant is less than or equal to about 20% by mass percentage. Also provided is a pharmaceutical formulation comprising the composition, and a method for preparing the same. Further, provided are a method for detecting the variant and use of the variant in quality inspection or quality control of an aflibercept-containing product.

Abstract: Aspects of this disclosure relate to a parallel hybrid acoustic passive filter. The parallel hybrid acoustic passive filter includes a first sub-filter and a second sub-filter. The first sub-filter includes a first acoustic resonator and a first non-acoustic passive component. The second sub-filter includes a second acoustic resonator and second first non-acoustic passive component. The first sub-filter and the second sub-filter are together arranged to filter a radio frequency signal. The parallel hybrid acoustic filter can be a band pass filter or a band stop filter, for example. Related multiplexers, wireless communication devices, and methods are disclosed.

Abstract: Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.

Abstract: Power amplifier supply networks with harmonic terminations are disclosed. In certain embodiments, a power amplifier system includes a first power amplifier that amplifies a first radio frequency (RF) signal of a first fundamental frequency, a second power amplifier that amplifies a second RF signal of a second fundamental frequency, and a power amplifier supply network that distributes a power amplifier supply voltage to the first power amplifier at a first distribution node and to the second power amplifier at a second distribution node. The power amplifier supply network includes a first harmonic termination circuit connected to the first distribution node that provide an open circuit at about twice the first fundamental frequency, and a second harmonic termination circuit connected to the second distribution node and that provides an open circuit at about twice the fundamental frequency.

Abstract: A double-sided polishing method for an optical lens belongs to the technical field of ultra-precision machining. In the double-sided polishing method, upper and lower surfaces of the lens are polished simultaneously by arranging abrasive tools on upper and lower positions of the lens, making the abrasive tools close to the upper and lower surfaces of the lens to swing back and forth in the polishing process, producing relative motion and removing the surface materials. In the present invention, in order to eliminate a problem of removal ununiformity, a method for swing machining of abrasive tools and methods for turning over and polishing of workpieces are adopted in a polishing process, which can realize the high efficiency double-sided high-precision machining for a nonplanar lens, and the method can be applied to the double-sided polishing for different types of lenses.

Abstract: A frequency extraction filter is disclosed. The frequency extraction filter can include a resonator that is coupled to a first node, and a phase shifter that is connected to the resonator in series. The phase shifter is coupled to a second node such that the resonator and the phase shifter are positioned between the first and second nodes. Impedance between the first and second nodes has an order of four or more.

Abstract: A frequency extraction filter is disclosed. The frequency extraction filter can include a resonator that is coupled to a first node, and a phase shifter that is connected to the resonator in series. The phase shifter is coupled to a second node such that the resonator and the phase shifter are positioned between the first and second nodes. Impedance between the first and second nodes has an order of four or more.