Core annular flow is used to enable the subcutaneous delivery of a viscous fluid such as a protein therapeutic formulation. The high-viscosity fluid is surrounded by a low-viscosity fluid, and the low-viscosity fluid lubricates the passage of the high-viscosity fluid. This allows the use of protein formulations that have a higher concentration and a higher viscosity at comparatively reduced injection forces and reduced injection times. Several different embodiments of injection devices that provide core annular flow are described herein.

A method for improving cross-polarization discrimination in a dual-polarized antenna array that includes antenna elements, each including at least two feeding ports to excite the antenna element with mutually independent signals having respective complex amplitudes. The method includes: determining, for each feeding port and antenna element, an electromagnetic far field resulting from excitation of the antenna by the feeding port as field components corresponding to two orthogonal linear polarizations and selecting the handedness of a desired circular polarization in the far field; determining, based on a predetermined relationship between the field components corresponding to the two orthogonal linear polarizations and on the desired circular polarization in the far field, a ratio between the complex amplitudes of excitation of the feeding ports of each antenna element, the ratio being associated with an increased cross-polarization discrimination; and exciting the antenna elements with signals having complex amplitudes in the determined ratio.

The present disclosure relates to a radar apparatus and a method for processing a signal using a radar apparatus, and more particularly, to an apparatus and a method for receiving and processing reception signals having different polarization characteristics using one array antenna. Specifically, the present disclosure provides a radar apparatus including: a long-range transmission antenna unit including one or more long-range transmission array antennae which transmit a first polarized transmission signal; a short-range transmission antenna unit including one or more short-range transmission array antennae which transmit a second polarized transmission signal; a complex array antenna unit which includes one or more complex array antennae receiving a first polarized reception signal and a second polarized reception signal which are received by reflecting the first polarized transmission signal and the second polarized transmission signal from a target; and a signal processing unit which detects the target using the first polarized reception signal and the second polarized reception signal, in which the first polarized reception signal has a cross polarization characteristic with respect to the second polarized reception signal, and a radar signal processing method.

A transceiver includes a vector modulator and a phased array antenna including a plurality of quad polarization antenna cells. The vector modulator is configured to modify an information signal to generate two excitation signals based on a selected polarization. The polarization is selected as one of at least vertical, horizontal, right hand circular, and left hand circular. The vector modulator is configured to drive at least one of the quad polarization antenna cells with the two excitation signals to achieve the selected polarity.

Disclosed is a method comprising transmitting or receiving, by a first terminal device (100), a first signal via a first antenna (1901), said first signal transmitted to or received from a second terminal device (102), and then switching, by the first terminal device, a polarization of the first antenna (1902), and then transmitting or receiving, by the first terminal device, a second signal via the first antenna (1903), said second signal transmitted to or received from the second terminal device.

An antenna is provided and includes a base antenna component, a loop antenna component, a first coupling by which the loop antenna component is pivotally attached to and selectively electrically communicative with the base antenna component, a whip antenna component, a second coupling by which the whip antenna component is pivotally attached to and selectively electrically communicative with the loop antenna component; and a transmission/reception (T/R) module. The T/R module is disposable in signal communication with at least one or more of the base, loop and whip antenna components.

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Disclosed is a cover device configured to protect an antenna device embedded in an electronic device to radiate a beam of an ultra-high frequency band, the cover device including: a cover frame including a window area corresponding to a radiation area of the antenna device; and a functional structure disposed in the window area on the cover frame and having a stacked structure comprising one or more functional layers.

A transmission antenna includes a closed-loop core having at least two electrically-conductive windings arranged on the closed-loop core. The windings are each electrically-actuated to generate a magnetic flux along the closed-loop core in opposing directions. The transmission antenna may generate a polarized magnetic field within a plane of the closed-loop core and provide broadband transmission of a polarized signal having a relatively flat frequency response. The transmission antenna is electrically-small, and the frequency of the polarized signal is nearly independent of the size of the closed-loop core. Multiple polarized signals may be provided, each being independently and continuously controlled through actuation of the windings. The direction of the polarized signal may also be varied. Additional windings for receiving a signal may simultaneously be employed on the closed-loop core. A method for transmitting a polarized signal with the transmission antenna is also provided.

Antenna systems and methods providing dual polarization are provided. The system includes one or more antenna elements, with each antenna element having feed points on adjacent sides. A first of the feed points is associated with a first one of a transmitted or received signal, while a second one of the feed points is associated with a second one of a transmitted or received signal. The sides of the rectangular driven element can feature different lengths, to provide transmit and receive bands that are separated from one another in frequency. A polarizer is disposed between the antenna elements and free space. Linearly polarized signals from the antenna elements are transformed into circularly polarized signals by the polarizer. Circularly polarized signals received at the antenna system are transformed into linearly polarized signals before they are passed to the antenna elements. An antenna system as disclosed herein can include a plurality of antenna elements arranged in an array.

A radar system includes a transmit front end device including a transmit planar component, and a receive front end device including a receive planar component. Each of the transmit planar component and the receive planar component includes a first end, a second end, a cavity space and a linear array of antennas. The cavity space is bounded by beam ports along a first side of the cavity space and by array ports along a second side of the cavity space. The cavity space is in operative communication with the beam ports and with the array ports to form a Rotman lens. A linear array of antennas is located along the second end of the planar component. The transmit planar component and receive planar component are arranged such that the linear array of antennas of the transmit planar component and the linear array of antennas are perpendicular to one another.