Abstract: A reduced size phase shifter provides the orientation of the microwave beams. The phase shifter includes RF connector (4) that provides the entrance of the coaxial transmission line (8) into the phase shifter (1), dielectric plate (7) with high dielectric constant that provides the gradual transformation of the quasi TEM mode carried by means of the micro-strip transmission line (6) into TE10 mode carried on the twin-toroid structure (5).

Abstract: A chip structure, suitable to be used in radar applications includes, at least one gallium based first layer to perform RF applications; at least one gallium based second layer, placed on the first layer, to perform digital applications; at least two copper based pillars located between the first layer and the second layer, which provide electrical connection between the first layer and second layer and which ensure that there is a safe distance between the first layer and second layer.

Abstract: An active limiting system that is suitable to protect a low noise amplifier against the high power signals received from a signal input includes, at least one first switch, source of which is connected to a gate voltage; at least first resistor which is connected between the gate and source of the first switch; at least one second resistor, which is connected between a drain voltage and drain of the first switch; at least one second switch, source of which is connected to said drain voltage and drain of which is connected to a signal input; at least one third resistor which is connected between the drain of the first switch and gate of the second switch; at least one first filtering element, which blocks DC currents/voltages and which is connected between the source of the second switch and ground.

Abstract: An uplink multiple access method based on the user-specific frozen bit patterns of polar codes assigned to users and relevant transmitter-receiver embodiments. The method includes encoding the information bits with a polar encoder by using the binary-valued, user-specific frozen bit patterns in frozen bit locations during encoding operation. The method further includes mapping of coded bits with symbols to be transmitted and baseband-to-RF processing performed on the symbol sequence. The generated signals of each user are transmitted by using the same time-frequency resources. The method further includes to receive the superposed signal of multiple users transmitted by means of relevant uplink radio channels. The method further includes an RF-to-baseband conversion on the received signal and detecting and decoding each user data by using an interference cancellation multiuser detector and a polar decoder that uses binary-valued pattern sequences assigned to the users in the frozen bit locations.

Abstract: An antenna array having wide frequency band, broad scanning volume and high polarization purity. The antenna array includes a ground plane (2), at least two antenna elements (1) located opposite to each other on the ground plane (2), at least one protrusion (4) located between the at least two antenna elements (1) and extending outward from the plane (2).

Abstract: Batteries and methods of forming the same include a lithium anode, an electrolyte having a high solubility for lithium ions and oxygen, and a thin graphene cathode formed on a substrate. Lithium ions migrate from the lithium anode through the electrolyte to form Li2O2 at a surface of the thin graphene cathode.

Abstract: A method for optimizing focus of an optical system passively fundamentally includes the following steps: discretizing optical positions (focus distances) with respect to precision requirements; initializing an idle counter to zero, going to the initial optical position, initializing a best position to current position, clearing a sharpness array; calculating correspondence in 2-tuple format; adding a sharpness value to a sharpness array; calculating a longest increasing subsequence on the sharpness array; checking if the longest increasing subsequence length increases; clearing the idle counter; setting the best position to the current position; incrementing the idle counter; checking if the termination threshold is reached; checking if the current position corresponds to the end of discrete optical positions if the termination threshold is not reached; driving motors to the next position; optionally improving the best position; going to the best position and terminating the method.

Abstract: A method for acoustic detection of shooter location includes the following steps: receiving acoustic signals by a microphone array; detecting muzzle blast (MB) and shock wave (SW) signals through matched filter and cross correlation processes; transforming the detected MB and SW signals from time domain into frequency domain; beamforming the signals by means of the Delay and Sum method in frequency domain; estimating the direction of arrival (DOA) for the MB and SW signals by finding the azimuth and elevation which give the maximum power of the beamforming response; performing range estimation using the difference between the arrival time of the MB and SW signals together with the DOA estimations.

Abstract: A foldable antenna system particularly suitable for use in a radar system includes a first antenna and a second antenna providing signaling; a body part; at least an actuator connected to the body part; a first connection element; a second connection element configured to connect the second antenna to the first antenna; a third connection element movably connected to the first antenna and a carriage part fixing the actuator to a surface. One end of the first connection element is movably connected to the body part distal from the actuator and a second end is connected to the first antenna.

Abstract: A heater circuit track pattern designed to be coated on a heater plate in order to achieve high uniform heat distribution and fast heating up, low power consumption and prevent current crowding with high fill factor. The heater plate includes a substrate layer which is an electrically insulative, highly thermally conductive, low heat capacity substrate where the heater circuit track pattern has a conductive layer and a resistive layer. The conductive layer has conductive parts such that power pads, main power lines, electrical transfer pads, sub-conductor lines are formed by a highly conductive material to distribute power equally to the resistive layer. The resistive layer has resistive portions including resistive parts formed by a resistive ink to heat up the heater plate.

Abstract: An open bore coil system enabling electronic steering and rotation of a Field Free Line (FFL) inside a large volume. An FFL is generated by placing two parallel coil pairs (fed with alternating current directions) side by side. Using two of these coil groups, the FFL can be rotated in the plane perpendicular to the coil axes. The FFL can be translated in the rotation plane of the FFL using a coil pair placed on the same axis with the other coils. It can also be translated in the perpendicular plane by asymmetrical coil excitation. As all the coils in the system are parallel, the imaged object can be reached from the sides during imaging.

Abstract: An RF crossover apparatus provides low transmission and return losses for microwave systems and meets the requirement for the RF signals to leap over each other as in an insulated state. The RF crossover apparatus contains a body produced from ceramic material, at least two RF strips placed inside the body in a way to intersect each other and at least one insulation layer insulating the RF strips placed on the body at least from the external environment. The body produced from ceramic material enables operation on high frequencies and this provides low transmission and return losses. The RF crossover apparatus also contains matching circuits on the tips of the RF strips for the RF strips to be passed to chip devices during use.

Abstract: A cleaning system and a cleaning method to clean the paste overflowing from at least one hole on the substrate on to at least one substrate during the production of ceramics sintered together at low temperature. The cleaning system includes at least one adhesive tape that adheres to the paste and is convenient for placing over the substrate and at least one pressing element which presses the adhesive tape towards the substrate in order for the adhesive tape to adhere to the overflowing paste. The cleaning method includes laying at least one adhesive tape over the substrate; pressing the adhesive tape towards the substrate by at least one pressing element and enabling the adhesion of the adhesive tape to the paste overflowing from the hole; and separation of the adhesive tape that adheres on the paste overflowing from the hole.

Abstract: A cooling system for cooling circuit boards. The cooling system includes a casing, which includes at least two board slots and at least one cooling plate between the two board slots; at least one cover, which is placed on a circuit board to be secured to one of the board slots; and at least one wedge placed on the cover. The wedge provides thermal conductivity between the circuit board and the cooling plate when the circuit board is placed into the board slot; and at least one wedgelock that secures the circuit board to the board slot.

Abstract: An electronic device carrying system used in military field in particular and providing carrying jammers and similar electronic devices (8) on back of user includes a waist belt (4) covering waist in a manner it sits onto hip bone of user and providing carrying of load through lower extremities, shoulder upper perlons (10) providing fixing shoulder hangers (2) above shoulder, preventing hanging of load and lying on to right-left side and connected from end in lower section to shoulder hangers (2) and mounted to electronic device (8) from end in upper section, chest band (12) providing shoulder hangers (2) to change pressure points on shoulders, carrying apparatus height adjustment mechanism (1) mounted onto electronic device (8), profile (5) having carrying apparatus height adjustment mechanism (1) and providing carrying electronic device (8) to desired height by means of fixing to holes in sequence provided thereon by pins.

Abstract: A reduced size phase shifter provides the orientation of the microwave beams. The phase shifter includes RF connector (4) that provides the entrance of the coaxial transmission line (8) into the phase shifter (1), dielectric plate (7) with high dielectric constant that provides the gradual transformation of the quasi TEM mode carried by means of the micro-strip transmission line (6) into TE10 mode carried on the twin-toroid structure (5).

Abstract: A phase shifter capable of withstanding very high average RF power, which enables directing of the beam in radar systems, it includes a waveguide, a ferrite toroid, composite dielectric plate including a dielectric plate in high thermal conductivity and a dielectric plate with the high dielectric constant, which increases the amount of phase shift per the unit length by directing the electric field and the transfer of heat generated on the ferrite toroids to the waveguide, a twin-toroid ferrite-dielectric structure including a combination of ferrite toroids and composite dielectric plates.

Abstract: A heater circuit track pattern designed to be coated on a heater plate in order to achieve high uniform heat distribution and fast heating up, low power consumption and prevent current crowding with high fill factor. The heater plate includes a substrate layer which is an electrically insulative, highly thermally conductive, low heat capacity substrate where the heater circuit track pattern has a conductive layer and a resistive layer. The conductive layer has conductive parts such that power pads, main power lines, electrical transfer pads, sub-conductor lines are formed by a highly conductive material to distribute power equally to the resistive layer. The resistive layer has resistive portions including resistive parts formed by a resistive ink to heat up the heater plate.

Abstract: A cooling system for cooling the circuit boards (B), such as VPX, VME or custom PCI modules, is provided. The cooling system includes a casing (C), which includes at least two board slots (1) and at least one cooling plate (2) between the two board slots (1); at least one cover (3), which is placed on a circuit board (B) to be secured to one of the board slots (1); at least one wedge (4) placed on the cover (3). The wedge (4) provides thermal conductivity between the circuit board (B) and cooling plate (2) when the circuit board (B) is placed into the board slot (1); and at least one wedgelock (5) that secures circuit board (B) to the board slot (1).

Abstract: The present invention relates to a method for incremental learning of a classification model, where pre-defined weak incremental learners are distributed over the distinct regions in a set of partitionings of the input domain. The partitionings and regions are organized via a binary tree and they are allowed to vary in a data-driven way, i.e., in a way to minimize the classification error rate. Moreover, to test a given data point, a mixture of decisions is obtained through the models learned in the regions that this point falls in. Hence, naturally, in the cold start phase of the data stream, the simpler models belonging to the larger regions are favored and as more data get available, the invention automatically puts more weights on the more complex models.