Abstract: A lead-acid battery includes a positive electrode plate, a negative electrode plate, and an electrolyte solution. The positive electrode plate includes a positive current collector and a positive electrode material. The negative electrode plate includes a negative current collector and a negative electrode material. The positive current collector contains a lead alloy containing Ca and Sn. The content of Ca in the positive current collector is 0.2% by mass or less, and the content of Sn is 0.5% by mass or more. The negative electrode material contains a first organic expander (excluding a lignin compound) containing at least one selected from the group consisting of a unit of a monocyclic aromatic compound and a unit of a bisphenol S compound.

Abstract: Provided is a secondary battery comprising a cathode comprising a cathode current collector and a cathode mixture layer containing and a cathode active material, an anode comprising an anode current collector and coating layer, and a non-aqueous electrolyte containing a non-aqueous solvent and a lithium salt which has been dissolved in the non-aqueous solvent. A surface of the anode current collector is coated with the coating layer. The coating layer contains an alkaline earth metal fluoride. During charge, a lithium metal is deposited on the anode. During discharge, the lithium metal is dissolved in the non-aqueous electrolyte.

Abstract: Provided herein are three-dimensional ion transport networks and current collectors for electrodes of electrochemical cells. Exemplary electrodes include interconnected layers and channels including an electrolyte to facilitate ion transport. Exemplary electrodes also include three dimensional current collectors, such as current collectors having electronically conducting rods, electronically conducting layers or a combination thereof.

Abstract: Described herein are novel alumina substrate-supported thin film SOFCs that may be produced at significantly reduced cost while providing improved robustness, high electrochemical performance, and the capability of effective carbon deposition resistance while still using Ni-cermet as an anode functional layer.

Abstract: Cobalt and copper-doped nickel Cu/Co—Ni-ferrite nanoparticles having a general formula CuxCoxNi(1-x)Fe2O4 can be a catalyst for electrooxidation of methanol in direct methanol fuel cells (DMFC). The catalyst can be an efficient anode for DMFC in alkaline electrolytes. The Cu/Co—Ni-ferrite nanoparticles can have a sponge-like structure with irregular pores. A diameter of the Cu/Co—Ni-ferrite nanoparticles can range from about 8 nm to about 30 nm.

Abstract: A powder material for an air electrode in a solid oxide fuel cell, the powder material being a powder of a metal composite oxide having a perovskite crystal structure represented by: A11-xA2xBO3-?, where the element A1 is at least one selected from the group consisting of La and Sm, the element A2 is at least one selected from the group consisting of Ca, Sr, and Ba, the element B is at least one selected from the group consisting of Mn, Fe, Co, and Ni, x satisfies 0<x<1, and ? is an oxygen deficiency amount. The powder has a specific surface area of 20 m2/g or more, satisfies (Crystallite diameter/Specific surface area-based particle diameter)?0.3, and contains elements M in an amount of 300 ppm or less in terms of atoms, the elements M being other than the elements A1, A2 and B, and oxygen.

Abstract: A fuel cell stack includes a first end region, a second end region, and a middle region. At least one of a first number of fuel cell units in the first end region is a first fuel cell unit including a membrane electrode assembly (MEA) with a first catalyst material on either or both an anode and a cathode of the first fuel cell unit. At least one of a second number of fuel cell units in the second end region is a second fuel cell unit including an MEA with a second catalyst material on either or both an anode and a cathode of the first fuel cell unit. The middle region is situated between the first and the second end region. At least one of a third number of fuel cell units in the middle region is a third fuel cell unit including an MEA with a third catalyst material on either or both an anode and a cathode of the first fuel cell unit. At least one of the first, the second, and the third catalyst material are different.

Abstract: The present disclosure discloses an end cover assembly, an energy storage device and electrical equipment. The end cover assembly includes an end cover provided with an outlet hole penetrating therethrough, an electrode terminal arranged on one side of the end cover, a sealing member including a first sealing portion and a plastic member including a first plastic portion. A projection, on the end cover of the electrode terminal along a thickness direction of the end cover covers the outlet hole, and a first gap surrounding the outlet hole is formed between the electrode terminal and the end cover. The first sealing portion fills one side of the first gap close to the outlet hole. The first plastic portion fills one side of the first gap away from the outlet hole; and a second gap is formed between the first sealing portion and the first plastic portion.

Abstract: This application relates to a secondary battery, a battery column, and an apparatus. The secondary battery includes a top cover plate, having an outer surface and an inner surface disposed opposite each other in a thickness direction of the top cover plate and an electrode lead-out hole extending along the thickness direction; a pole, disposed in the electrode lead-out hole, where the pole includes a first metal layer and a second metal layer, and the first metal layer and the second metal layer are stacked along a direction from the inner surface to the outer surface; an insulation member, disposed between the top cover plate and the pole; and a first bonding layer, disposed between the insulation member and the first metal layer, where the insulation member is hermetically connected to the first metal layer through the first bonding layer.

Abstract: A fixing assembly for a battery module and a battery pack are provided. The fixing assembly for the battery module includes an end plate, a fixing member, and a first band. The end plate is provided with a limiting member protruding from a surface of the end plate. The fixing member is configured to connect multiple battery modules and abut against the surface of the end plate provided with the limiting member, such that the fixing member, the limiting member, and the end plate can cooperatively define a positioning region. The first band is configured to abut against the surface of the end plate provided with the limiting member to bind the battery module. The first band abuts against the positioning region, such that the fixing member and the limiting member can cooperatively abut against the first band.

Abstract: A load applicator includes an elastic mechanism, a first member configured to move in accordance with contraction of power storage cells, a second member provided on a side opposite to the first member across the elastic mechanism, and a switching device. The elastic mechanism has a first form in which a first restraint load is applied to the power storage module when the power storage module expands by a first dimension, and a second form in which a second restraint load larger than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension. The switching device performs an operation to switch from the first form to the second form in a case where a restraint load smaller than the first restraint load is applied to the power storage module when the power storage module expands by the first dimension.

Abstract: An adapter assembly, an energy storage device and a power consuming apparatus are provided. The adapter assembly includes an adapter and a limiting member. The adapter includes a first connecting portion, a second connecting portion, and a bendable connecting portion connected between the first connecting portion and the second connecting portion. The limiting member is located between the first connecting portion and the second connecting portion foldable with respect to each other, and is insulated from the adapter. The limiting member has a limiting face configured to abut against the bendable connecting portion, and the bendable connecting portion is configured to rotate and bend around the limiting face.

Abstract: A power tool battery pack enclosure is configured to be retrofittedly coupled to battery pack receptacles of a plurality of power tools, each battery pack receptacle configured to removably receive a plurality of power tool battery packs. The enclosure includes a first clamshell member and a second clamshell member configured to be coupled around at least a portion of an exterior surface of each battery pack receptacle. Each of the first and second clamshell members have a top wall portion configured to be received over the exterior surface of the battery pack receptacle and a sidewall portion that extends downward from the top wall portion over at least a portion of the battery pack housing when the battery pack is received in the battery pack receptacle.

Abstract: This application relates to the field of energy storage technologies, and provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell and a second battery cell. The first battery cell includes a first pressure relief mechanism, the second battery cell includes a second pressure relief mechanism, an energy density of the first battery cell is greater than an energy density of the second battery cell, and an area of the first pressure relief mechanism is greater than an area of the second pressure relief mechanism. The apparatus includes the foregoing battery.

Abstract: A battery pack is provided with a check valve including a cover body that is attached to a housing accommodating battery cells and a valve main body that is provided at an inner side of the cover body. The check valve exhausts gas discharged from the battery cells to outside the housing. The valve main body includes a moving portion disposed at an upstream side of the cover body. The moving portion is urged by an urging member to separate to the upstream side from the main body portion. When an internal pressure of the housing is at least a threshold value, the moving portion moves to the downstream side in opposition to urging force of the urging member. Plural stopper portions of the moving portion abut against the main body portion and limit the movement to the downstream side. Interstitial flow paths for the gas are formed between the stopper portions.

Abstract: A crosslinked polyolefin separator having an average value of light transmittance of 30% or more in a region of 380 nm to 700 nm, after four sides of the separator are fixed and allowed to stand at 130° C. for 30 minutes. A method for manufacturing the crosslinked polyolefin separator is also provided. The crosslinked polyolefin separator has a low shutdown temperature to provide improved safety. The crosslinked polyolefin separator also has a high meltdown temperature and is inhibited from die-drooling.

Abstract: A battery module includes: a cell assembly including at least one battery cell; a module case accommodating the cell assembly; and a module connector mounted outside the module case, electrically connected to the cell assembly, and configured to connect to an external connector outside the module case. A coupling surface of the module connecter may have a first fastening part opened in at least one direction, and a corresponding coupling surface outside the module case may have a second fastening part opened bidirectionally so as to be inserted into the first fastening part in a first direction or in a second direction opposite thereto.

Abstract: Pouch cell having a positive contact lug and a negative contact lug, in which contact lugs electrical contact can be made with the pouch cell pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a flat cell surface which extends parallel in relation to the positive contact lug and the negative contact lug, wherein the positive contact lug has an upper positive connecting element and a lower positive connecting element, which positive connecting elements are arranged on opposite sides of the positive contact lug, and the negative contact lug has an upper negative connecting element and a lower negative connecting element, which negative connecting elements are arranged on opposite sides of the negative contact lug.

Abstract: The application relates to a battery module, a battery pack and a vehicle. The battery module includes: secondary batteries, in which two or more secondary batteries are arranged side by side in an arrangement direction; a busbar arranged on a top of the secondary batteries and electrically connected to at least two of the secondary batteries; a sampling assembly including a sampling circuit board arranged on the top of the secondary batteries and a sampling leg extending from the sampling circuit board toward the busbar, the sampling leg and the busbar being welded to form a welded zone; a connector, the sampling leg and the busbar being connected by the connector, the connector being located at a side of the welded zone close to the sampling circuit board.

Abstract: A secondary battery includes an electrode, a positive electrode current collector, a negative electrode current collector, a positive electrode terminal, a negative electrode terminal, and an insulating plate. The positive electrode terminal and the negative electrode terminal each have a main side surface and a sub side surface having an area smaller than that of the main side surface. The positive electrode terminal and the negative electrode terminal are arranged so that the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal face each other. The insulating plate is arranged between the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal.

Abstract: Provided are interconnects for interconnecting a set of battery cells, assemblies comprising these interconnects, methods of forming such interconnects, and methods of forming such assemblies. An interconnect includes a conductor comprising two portions electrically isolated from each other. At least one portion may include two contacts for connecting to battery cells and a fuse forming an electrical connection between these two contacts. The interconnect may also include an insulator adhered to the conductor and mechanically supporting the two portions of the conductor. The insulator may include an opening such that the fuse overlaps with this opening, and the opening does not interfere with the operation of the fuse. In some embodiments, the fuse may not directly interface with any other structures. Furthermore, the interconnect may include a temporary substrate adhered to the insulator such that the insulator is disposed between the temporary substrate and the conductor.

Abstract: Provided are a centrifugal battery liquid injection mechanism and a liquid injection method thereof. The centrifugal battery liquid injection mechanism comprises a liquid injection device and a driving device, the liquid injection device is provided with a piston mechanism and a liquid outlet head capable of being opened and closed, and one end of the liquid injection device close to the liquid outlet head is further provided with a liquid injection port capable of being opened and closed; and the liquid injection port is used for injecting a wetting liquid into the liquid injection device. The liquid injection device is connected with a to-be-wetted device through the liquid outlet head, so as to inject the wetting liquid into the to-be-wetted device. The driving device is connected with the to-be-wetted device for driving the to-be-wetted device to move.

Abstract: A stopper (1) for closing and sealing an opening (120) in a housing (110) of an energy storage system (100), in particular for closing and sealing an opening (120) in a housing (110) of a lead acid storage battery, wherein the stopper (1) comprises a connecting region (20), which is configured to engage with the opening (120) in the energy storage system (100), and a sealing region (30), which is disposed above the connecting region (20) in the axial direction (A) of the stopper (1), wherein the sealing region (30) is configured to accommodate a sealing element (32) which is designed to be deformed by a force acting at least partially, in particular completely, in the axial direction (A) of the stopper (1) when the stopper (1) is in the installed state.

Abstract: A box body includes a carrying plate configured to carry a battery and a one-way gravity valve disposed at the carrying plate. The one-way gravity valve is configured to be closed in response to a gravity of liquid in the box body being less than a threshold, and to be open in response to the gravity of the liquid in the box body reaching the threshold.

Abstract: Systems and methods for one or more bipolar plate and a stack for an electrochemical system. The bipolar plate comprising a first individual plate and a second individual plate. The first individual plate has at least one first positioning opening with a first crimping. The second individual plate has at least one second positioning opening with a second crimping. The first positioning opening and the second positioning opening of the individual plates arranged in alignment with each other. The first crimping forms at least one first contact area for a first positioning pin and the second crimping forms at least one second contact area for the first positioning pin.

Abstract: Disclosed is a delivery unit (3) for an anode circuit (9) of a fuel cell system (1) for delivering a gaseous medium, in particular hydrogen, from an anode region (38) of a fuel cell (2), said delivery unit (3) comprising at least one jet pump (4) and being at least indirectly fluidically connected to the outlet of the anode region (38) by means of at least one connection line (23, 25) and being fluidically connected to the inlet of the anode region (38) by means of an additional connection line (27). According to the invention, in addition to the jet pump (4), the delivery unit (3) comprises a recirculation fan (8) and a metering valve (6) as other components, and the flow contours of the components (4, 6, 8) for the gaseous medium and/or the components (4, 6, 8) are at least almost entirely arranged in a common housing (7).

Abstract: A fuel cell system without a high pressure line of a hydrogen supplying system, including a gas charging line formed between a gas charging station and a high pressure vessel charged with gas by the gas charging station, and a gas supplying line formed between the high pressure vessel and a stack, includes: a regulator provided in the gas supplying line; a solenoid valve provided in the gas supplying line between the regulator and the high pressure vessel; and a check valve provided in a bypass line connecting one point of the gas supplying line between the regulator and the solenoid valve and one point of the gas charging line.

Abstract: The invention relates to a method for line pressure monitoring, in particular for detecting leaks, in a bidirectionally used line section (40a) of a connection line unit (40) in an energy system (10), in particular in a domestic energy system, as well as an energy system (10) of this type, wherein a first energy source unit (21) and a first energy sink unit (22) are positioned on the first side (43) of the bidirectional line section (40a), and wherein a second energy source unit (31) and a second energy sink unit (32) are positioned on the second side (44) of the bidirectional line section (40a).

Abstract: A computer is provided for a fuel cell propulsion system of a motor vehicle. The computer includes one or more processors receiving a temperature signal from one or more temperature sensors and a pressure signal from one or more pressure sensors. The computer further includes a non-transitory computer readable storage medium including instructions, such that the processor is programmed to determine a feedback correction based on the temperature of the coolant and the pressure drop of the coolant across the fuel cell stack. The processor is further programmed to generate a pump command signal based on the feedback correction and a nominal pump command, with the pump command signal actuating a pump to pump coolant at a target pump speed.

Abstract: Improved membrane electrode assemblies, cation-associating components thereof, and methods of making and treating the same are provided. Membrane electrode assemblies may include an ionomer having a first pKa value, and a water-insoluble net polymer having a weakly-acidic functional group, wherein the weakly-acidic functional group has a second pKa value greater than the first pKa value.

Abstract: Described herein is a novel electrode-decoupled redox flow battery, a novel reinforced electrode-decoupled redox flow battery, and methods of using same to store energy. Advantages of these novel electrode-decoupled redox flow batteries include long life, excellent rate capability, and stability.

Abstract: Electrochemical cells and batteries that can operate with a single electrolyte solution, such as those comprising an anode, a cathode current collector, and a porous, non-conductive spacer between the cathode current collector and anode. Membraneless electrochemical cells and batteries are also disclosed. The electrochemical cells and batteries disclosed herein may be used, for example, to produce electricity or to generate hydrogen or both, and to deliver electricity or hydrogen or both to process applications.

Abstract: A high frequency filter A1 has frequency characteristics such that the amount of attenuation for an input electrical signal is smaller in a first frequency band f1 than in a second frequency band f2. The high frequency filter A1 is provided with a dielectric elastomer transducer 1 that includes a dielectric elastomer layer 13 and a pair of electrode layers 14 sandwiching the dielectric elastomer layer 13. The frequency characteristics are variable by the dielectric elastomer transducer 1. This configuration provides a high frequency filter having frequency characteristics that are variable and suitable for a lightweight and compact configuration.

Abstract: A filter device (130) is formed between an input end (T1) and an output end (T2), and is configured to attenuate a radio frequency signal in a specific frequency band. The filter device (130) includes a dielectric substrate (140) having a multilayer structure, ground electrodes (GND1 and GND2) formed in the dielectric substrate (140), a first coupling line (132) electrically connected to the input end (T1), a second coupling line (134) electrically connected to the output end (T2), and a stub (133) connected to the first coupling line (132) and the second coupling line (134). The first coupling line (132) and the second coupling line (134) are formed in layers different from layers of the ground electrodes (GND1 and GND2). The first coupling line (132) and the second coupling line (134) are disposed in different layers so as to face each other.

Abstract: The present invention includes a method of creating electrical air gap low loss low cost RF mechanically and thermally stabilized interdigitated resonate filter in photo definable glass ceramic substrate. Where a ground plane may be used to adjacent to or below the RF filter in order to prevent parasitic electronic signals, RF signals, differential voltage build up and floating grounds from disrupting and degrading the performance of isolated electronic devices by the fabrication of electrical isolation and ground plane structures on a photo-definable glass substrate.

Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.

Abstract: A system is disclosed herein. The system includes a splitter board. The splitter board includes a microprocessor, a converter, and a bypass relay. The converter includes analog-to-digital circuitry and digital-to-analog circuitry. The bypass relay is configurable between a first state and a second state. In the first state, the bypass relay is configured to direct an input signal to the converter. The converter converts the input signal to a converted input signal and splits the converted input signal into a first portion and a second portion. The first portion is directed to the microprocessor. The second portion is directed to an output port of the splitter board for downstream processes. In the second state, the bypass relay is configured to cause the input signal to bypass the converter. The bypass relay directs the input signal to the output port of the splitter board for the downstream processes.

Abstract: A directional coupler includes a substrate, a main line 121, a main line 122, and a sub-line. The main line 121 and the main line 122 each include a conductor pattern formed in the substrate, and are connected in parallel to each other. The sub-line includes a conductor pattern formed in the substrate. The sub-line is disposed at a position at least partially overlapping with the main line 121 in a plan view of the substrate.

Abstract: An optically transparent coplanar microwave slot antenna is provided including a conductive mesh and a feedline connectively coupled to the conductive mesh wherein the conductive mesh includes a plurality of Christmas tree shaped slots arranged in a dipole configuration wherein each of the plurality of Christmas tree shaped slots is formed from a triangular slot, a trapezoidal slot and a rectangular slot.

Abstract: Integrated microphone and antennas include a microphone and an antenna. The microphone includes a housing and an acoustic transducer. The housing defines a cavity and includes a conductive layer. The acoustic transducer is positioned within the cavity and structured to generate an acoustic signal. The antenna is at least partially integrated with the microphone and structured to transmit and receive radio frequency signals. The antenna is structured to utilize the conductive layer of the housing as a radiating element.

Abstract: An electronic device may have a display. A display cover layer and a transparent inner display member may overlap a display pixel layer. The display pixel layer may have an array of display pixels for displaying images for a user. A touch sensor layer may be interposed between the display pixel layer and the transparent display member. A ferromagnetic shielding layer may be mounted below the display pixel layer. A flexible printed circuit containing coils of metal signal lines that form a near-field communications loop antenna may be interposed between the ferromagnetic shielding layer and the display pixel layer. A non-near-field antenna such as an inverted-F antenna may have a resonating element mounted on an inner surface of the display cover layer. The resonating element may be interposed between the transparent display member and the display cover layer.

Abstract: Provided is a millimeter-wave radar package module, which relates to antenna packaging. The millimeter wave radar package module includes a package and a plurality of antenna units packaged therein. The package includes a chip, and the chip includes a transmitter and a receiver. The antenna units are respectively connected to an output pin of the receiver and an output pin of the transmitter through a transmission line.

Abstract: An electronic device includes a bracket including a first structure at least partially having non-conductivity, a second structure disposed on a first surface of the first structure and at least partially having conductivity, and an antenna pattern electrically connected with the second structure and disposed on a second surface of the first structure, and a printed circuit board including a grounding part and a feeding part. The grounding part is electrically connected with the second structure, and the feeding part is electrically connected with a portion of the antenna pattern.

Abstract: An electronic device is disclosed. The electronic device comprises: a first plate including a first planar region facing a first direction; a second plate comprising a second planar region facing a second direction opposite to the first direction; a housing including a side member surrounding an inner space between the first plate and the second plate; a display disposed between the first plate and the second plate and viewed through the first plate; and an antenna module disposed between the display and the second plate and configured to emit electromagnetic waves to the outside of the housing. The antenna module comprises: an antenna substrate including a first surface facing the first plate, a second surface facing the second plate, and a third surface facing the inner surface of the side member; and a wireless communication circuit disposed on the first surface of the antenna substrate.

Abstract: To realize polarization MIMO in a more suitable form in a mobile communication apparatus. A communication apparatus includes a plurality of antenna parts configured to receive or transmit a wireless signal, a communication control part configured to control transmitting or receiving the wireless signal via at least any of the plurality of antenna parts, and a casing housing the communication control part, in which each of the plurality of antenna parts is held near each of a plurality of partial regions normal directions of which cross each other or the normal directions of which are mutually twisted in outer faces of the casing, and transmit or receive a first wireless signal and a second wireless signal propagating in directions substantially orthogonal to the partial regions and having mutually different polarization directions.

Abstract: An electronic device is provided. The electronic device includes a first housing including a first conductive portion, a second housing slidably coupled to the first housing at a designated round-trip distance and configured to include a second conductive portion overlapping at least a part of the first conductive portion in a slide-in state, a wireless communication circuit disposed in the electronic device and electrically connected to the first conductive portion, and at least one electrical connection structure disposed in a second space of the second housing and configured to electrically connect the second conductive portion to the first conductive portion in the slide-in state. The wireless communication circuit may be configured to transmit and/or receive a radio signal in at least one frequency band through the first conductive portion and the second conductive portion in the slide-in state.

Abstract: A radome structure for a multilayered broadband radome structure is described. The radome structure may include a central core layer comprising a first dielectric constant, an interior intermediate core layer adjacent to an interior side of the central core layer, comprising a second dielectric constant less than the first dielectric constant, an exterior intermediate core layer adjacent to an exterior side of the central core layer, comprising a third dielectric constant less than the first dielectric constant, and an interior outside core layer adjacent to an interior side of the interior intermediate core layer, comprising a fourth dielectric constant less than the second dielectric constant. In some examples of the radome structure described above may further include an exterior outside core layer adjacent to an exterior side of the exterior intermediate core layer, comprising a low dielectric constant.

Abstract: An integrated antenna structure includes a frame, a circuit board, at least one antenna radiator, a support plate, a battery, and at least one metal sheet. The frame surrounds and defines an accommodation space. The circuit board is disposed in the accommodation space. The antenna radiator includes a body and a plurality of platforms. The body is disposed on the frame by using nano molding technology (NMT) and at least partially surrounds the accommodation space. The platforms are connected to the body and protrude toward the accommodation space. The platforms are configured to electrically connect to the circuit board respectively. The support plate is disposed in the accommodation space. The metal sheet is at least partially disposed on a surface of the support plate and extends along an edge of the support plate. One end of the metal sheet is electrically connected to the circuit board.

Abstract: An electronic device may have a phased antenna array. An antenna in the array may include a rectangular patch element with diagonal axes. The antenna may have first and second antenna feeds coupled to the patch element along the diagonal axes. The antenna may be rotated at a forty-five degree angle relative to other antennas in the array. The antenna may have one or two layers of parasitic elements overlapping the patch element. For example, the antenna may have a layer of coplanar parasitic patches separated by a gap. The antenna may also have an additional parasitic patch that is located farther from the patch element than the layer of coplanar parasitic patches. The additional parasitic patch may overlap the patch element and the gap in the coplanar parasitic patches. The antenna may exhibit a relatively small footprint and minimal mutual coupling with other antennas in the array.

Abstract: An infusion pump assembly is disclosed. The infusion pump assembly includes a reservoir for receiving an infusible fluid, a pump assembly for pumping a quantity of infusible fluid from the reservoir to an exit, a first valve assembly configured to selectively isolate the pump assembly from the reservoir, a second valve assembly configured to selectively isolate the exit from the pumping assembly, and a split ring resonator antenna having a resonant frequency comprising a plurality of planar metallic layers.