Abstract: A power consumption monitoring device includes a sensor, a storage, and a processor. The sensor is configured to detect a power-consuming device quantity and a power consumption amount. The storage is configured to store the power-consuming device quantity and the power consumption amount. The processor is communicatively connected to the sensor and the storage. The processor is configured to calculate a power-consuming device idling indicator based on the power-consuming device quantity and the power consumption amount in a monitoring time interval, wherein the power-consuming device idling indicator is used for indicating a deviation status of the power-consuming device quantity and the power consumption amount. The processor is further configured to determine whether the power-consuming device idling indicator exceeds a warning threshold. In response to the power-consuming device idling indicator exceeding the warning threshold, the processor is further configured to generate a warning message.

Abstract: A dual-mode dielectric resonator using two dissimilar modes is described, the dissimilar modes supported by a ridge waveguide resonator and a ¼-wavelength (¼?) metalized cylindrical resonator within a single, metal-coated dielectric block. Each ridge waveguide resonator and cylindrical resonator form a dual-mode resonator pair. Coupling control posts set between the ridge waveguide resonator and cylindrical resonator can adjust their coupling. Multiple pairs of ridge waveguide/cylindrical resonators are fabricated in the same dielectric block to form a coupled resonator bandpass filter, including an 8-pole or 10-pole dielectric resonator filter, for 5G or other applications. Transmission zeros can be introduced by a metalized blind hole extending vertically between two ridge waveguide resonators or a microstrip extending between two dual-mode resonator pairs between which there exists no partial-width or full-width dielectric window.

Abstract: A dual-mode dielectric resonator using two dissimilar modes is described, the dissimilar modes supported by a ridge waveguide resonator and a ¼-wavelength (¼?) metalized cylindrical resonator within a single, metal-coated dielectric block. Each ridge waveguide resonator and cylindrical resonator form a dual-mode resonator pair. Coupling control posts set between the ridge waveguide resonator and cylindrical resonator can adjust their coupling. Multiple pairs of ridge waveguide/cylindrical resonators are fabricated in the same dielectric block to form a coupled resonator bandpass filter, including an 8-pole or 10-pole dielectric resonator filter, for 5G or other applications. Transmission zeros can be introduced by a metalized blind hole extending vertically between two ridge waveguide resonators or a microstrip extending between two dual-mode resonator pairs between which there exists no partial-width or full-width dielectric window.

Abstract: A dual-mode dielectric resonator using two dissimilar modes is described, the dissimilar modes supported by a ridge waveguide resonator and a ½-wavelength metalized cylindrical resonator within a single, metal-coated dielectric block. Each ridge waveguide resonator and cylindrical resonator form a resonator pair. Multiple pairs of ridge waveguide/cylindrical resonators are fabricated in the same dielectric block to form an 8-pole dielectric resonator filter for 5G or other applications. Transmission zeros can be positioned by the location of feeding probes along the cylindrical resonators.

Abstract: Radio frequency antennas sharing a ground plane are largely decoupled using one or more lumped capacitive elements set into holes within the ground plane. The holes, which are precisely placed, can extend to a side of the ground plane. A stub extends from a fringe of the hole either straight or bending in an L shape, and a capacitor connects between an end of the stub and another side of the hole. Capacitive elements can also be supported on raised solder pads above a ground plane or off to one side of the ground plane. Methods for manufacturing the decoupling apparatus are described.

Abstract: A magnetic current dipole feeding structure for patch and dielectric resonator antennas is disclosed in which a wire coil helix is placed above the ground plane and below the patch or top of the dielectric resonator block, the coil having half wound in a right-hand orientation and another half in a left-hand orientation, meeting at a common point in the middle. One end of the double torsion coil can be excited with radio frequency (RF) signals, and the other can be grounded on the ground plane. Some embodiments have the other end fed by an equal signal. These double torsion coils can be used in pairs to provide differential feeding to the patch or dielectric resonator, and pairs placed orthogonally to a first pair can be used for another polarization.

Abstract: A magnetic current dipole feeding structure for patch and dielectric resonator antennas is disclosed in which a wire coil helix is placed above the ground plane and below the patch or top of the dielectric resonator block, the coil having half wound in a right-hand orientation and another half in a left-hand orientation, meeting at a common point in the middle. One end of the double torsion coil can be excited with radio frequency (RF) signals, and the other can be grounded on the ground plane. Some embodiments have the other end fed by an equal signal. These double torsion coils can be used in pairs to provide differential feeding to the patch or dielectric resonator, and pairs placed orthogonally to a first pair can be used for another polarization.

Abstract: Radio frequency antennas sharing a ground plane are largely decoupled using one or more lumped capacitive elements set into holes within the ground plane. The holes, which are precisely placed, can extend to a side of the ground plane. A stub extends from a fringe of the hole either straight or bending in an L shape, and a capacitor connects between an end of the stub and another side of the hole. Capacitive elements can also be supported on raised solder pads above a ground plane or off to one side of the ground plane. Methods for manufacturing the decoupling apparatus are described.

Abstract: The disclosure provides antenna assemblies and methods for reducing mutual coupling of coupled antennas. According to an embodiment, the antenna assembly, comprises: a first antenna; and a second antenna coupled with the first antenna; wherein a first capacitive load is provided to the first antenna at a first position of the first antenna so that a mutual coupling between the first antenna and the second antenna is reduced. According to the present disclosure, at least some of the following advantages may be achieved: 1) no any component that connects or structure between coupled antennas is required; 2) the capacitive load is very little frequency dependent so that the method is highly suitable for antenna decoupling at low frequencies; 3) the required capacitive load takes almost no space in the circuit layout; and 4) the load does not noticeably change antenna radiation patterns.

Abstract: A device is presented for improving radio frequency (RF) and microwave array antenna performance. The device sits in the near field, the reactive region, of the antenna array with a pattern of electrically isolated rectangular, cross-shaped, ell, and/or similarly-shaped patches of flat metal or other conductor in a flat plane. The patches are segmented into smaller shapes no greater than 0.3 of a shortest wavelength of the nominal operating range of the antenna and/or the height of the plane is greater than 0.25 and/or less than 0.4 of the center frequency's wavelength.

Abstract: The disclosure provides antenna assemblies and methods for reducing mutual coupling of coupled antennas. According to an embodiment, the antenna assembly, comprises: a first antenna; and a second antenna coupled with the first antenna; wherein a first capacitive load is provided to the first antenna at a first position of the first antenna so that a mutual coupling between the first antenna and the second antenna is reduced. According to the present disclosure, at least some of the following advantages may be achieved: 1) no any component that connects or structure between coupled antennas is required; 2) the capacitive load is very little frequency dependent so that the method is highly suitable for antenna decoupling at low frequencies; 3) the required capacitive load takes almost no space in the circuit layout; and 4) the load does not noticeably change antenna radiation patterns.

Abstract: Disclosed is an air-filled patch antenna, comprising: a ground plane; a patch arranged to be in parallel to the ground plane; four inherent metal legs extending from the patch perpendicularly, wherein each of distal ends of the four legs is electrically and mechanically connected to the ground plane; and a feeding structure configured to provide a signal interface to the antenna.

Abstract: A device is presented for improving radio frequency (RF) and microwave array antenna performance. The device sits in the near field, the reactive region, of the antenna array with a pattern of electrically isolated rectangular, cross-shaped, ell, and/or similarly-shaped patches of flat metal or other conductor in a flat plane. The patches are segmented into smaller shapes no greater than 0.3 of a shortest wavelength of the nominal operating range of the antenna and/or the height of the plane is greater than 0.25 and/or less than 0.4 of the center frequency's wavelength.

Abstract: Devices and methods for decoupling two antennas in a compact antenna array and antenna arrays comprising the devices are disclosed. According to an embodiment, the device comprises a first resonator coupled with a source, the source being connected with a first antenna of the two antennas; and a second resonator coupled with the first resonator and a load, the load being connected with a second antenna of the two antennas, wherein the first and second resonators are configured so that a first coupling between the source and the first resonator, a second coupling between the first and second resonators, and a third coupling between the second resonator and the load are satisfied with a constraint that an isolation coefficient in a whole network composed of a first two-port network consisting of the two antennas and a second two-port network consisting of the first and second resonators in parallel approach zero as well as reflection coefficients of each port of the whole network are minimized.

Abstract: Disclosed is an air-filled patch antenna, comprising: a ground plane; a patch arranged to be in parallel to the ground plane; four inherent metal legs extending from the patch perpendicularly, wherein each of distal ends of the four legs is electrically and mechanically connected to the ground plane; and a feeding structure configured to provide a signal interface to the antenna.

Abstract: Disclosed is an apparatus for decoupling two antennas in an antenna array, in which the two antennas transmit and receive signals via a first input/output port and a second input/output port of the apparatus. The device may comprise a first adjusting device connected between a first antenna of the two antennas and the first input/output port, a second adjusting device connected between a second antenna of the two antennas and the second input/output port, and one or more decoupling networks connected between the first input/output port and the second input/output port. The first adjusting device and the second adjusting device are configured to have admittance adjustable to compensate an admittance of the decoupling networks such that an isolation coefficient between the two input/output ports approaches zero as well as reflection coefficients of each input/output port are minimized.

Abstract: Devices and methods for reducing interference between closely collocated antennas working at the same or adjacent frequencies are disclosed. According to one embodiment, the antenna array comprises a plurality of antennas for transmitting signals from and receiving signals to a plurality of transceivers respectively, and the device comprises a plurality of resonators; a first set of ports, each of which is connected to a respective one of the plurality of transceivers; and a second set of ports, each of which is connected to a respective one of the plurality of antennas; wherein each of the transceivers and the antennas is connected to a respective one of the resonators, and coupling coefficients among the resonators as well as a resonance frequency of each of the resonators are configured so that a desired isolation among the first set of ports and a desired matching at each of the first set of ports are obtained.

Abstract: Disclosed is an apparatus for decoupling two antennas in an antenna array, in which the two antennas transmit and receive signals via a first input/output port and a second input/output port of the apparatus. The device may comprise a first adjusting device connected between a first antenna of the two antennas and the first input/output port, a second adjusting device connected between a second antenna of the two antennas and the second input/output port, and one or more decoupling networks connected between the first input/output port and the second input/output port. The first adjusting device and the second adjusting device are configured to have admittance adjustable to compensate an admittance of the decoupling networks such that an isolation coefficient between the two input/output ports approaches zero as well as reflection coefficients of each input/output port are minimized.

Abstract: A dielectric resonator filter and a method of manufacturing the same are disclosed. The dielectric resonator includes a metal housing having a top surface and a bottom surface and defining a resonator cavity, and a dielectric rod located within the resonator cavity. The dielectric rod is short-circuited at both the top surface and the bottom surface. A plurality of holes are formed in the dielectric rod parallel to an axis of the dielectric rod and a plurality of apertures are formed on the top surface corresponding to the positions of the holes, respectively. A plurality of screws are inserted into the holes through the apertures, respectively. The dielectric resonator supports dual TM11 degenerate modes, each of which forms a resonant circuit. An insertion depth and a dimension of each of the screws is adjustable to adjust resonance frequencies of the dual degenerate modes and coupling between the dual degenerate modes.

Abstract: Devices and methods for reducing interference between closely collocated antennas working at the same or adjacent frequencies are disclosed. According to one embodiment, the antenna array comprises a plurality of antennas for transmitting signals from and receiving signals to a plurality of transceivers respectively, and the device comprises a plurality of resonators; a first set of ports, each of which is connected to a respective one of the plurality of transceivers; and a second set of ports, each of which is connected to a respective one of the plurality of antennas; wherein each of the transceivers and the antennas is connected to a respective one of the resonators, and coupling coefficients among the resonators as well as a resonance frequency of each of the resonators are configured so that a desired isolation among the first set of ports and a desired matching at each of the first set of ports are obtained.