Abstract: A system for transmitting an electrical signal, notably a frequency-related electrical signal, includes two conducting lines each having a central conductor surrounded by a conducting sheath, the lines being coupled and isolated from one another at each end by a transformer. The central conductor of a line is linked at the input of the system to a coil of a first transformer and at the output of the system to a coil of the second transformer. The invention is applied for example for the transmission of strongly disturbed environment measurement signals.

Abstract: A method for communicating over a coaxial cable network is described. The method includes identifying at least one port in the coaxial cable network that provides high mutual isolation among nodes of the coaxial cable network when the port is terminated with an impedance that matches a characteristic impedance of coaxial cable in the coaxial cable network. The method also includes terminating the identified port with an impedance that is substantially mismatched with the characteristic impedance of the coaxial cable, and transmitting a signal from a first node in the network to a second node in the network.

Abstract: A directional coupler comprising a first connection for the inlet or outlet of a shaft, a first decoupling connection which is used to decouple a coupled shaft, a second connection for the inlet or outlet of the inlet or outlet shaft from the first connection and a second decoupling connection which is used to decouple the coupled shaft. The first connection and the first decoupling connection are connected to the internal conductor and to the external conductor of a coaxial conductor on the first connection surface thereof, by means of a first network. The second connection and the second decoupling connection are connected to the internal conductor and to the external conductor of the coaxial conductor on the second connection surface thereof, by means of a second network.

Abstract: A directional coupler and a receiving or transmitting device. The directional coupler includes: a primary signal line composed of a metal rod; and a coupled signal line composed of a microstrip line in a curved shape on a printed circuit board; wherein the medium between the metal rod and the microstrip line is air. Compared with existing directional coupler, the directional coupler of the embodiments of the disclosure has a lower transmitting loss, a large power capacity, and a high directional qualification. The directional coupler is capable of ensuring a higher passive intermodulation qualification. The advantages of the embodiments of the present disclosure are easier assembly, good uniformity of the qualifications, and adaptability for various application environments. The directional coupler of the disclosure ensures different parameter qualifications, and is simple to assemble, so that the low cost is achieved.

Abstract: An RF power combiner used to combine an output received from a plurality of power amplifiers. The combined output is used to operate a gas discharge laser. In some embodiments, the power combiner consists of a network of transformers that provide an output to a load. In other embodiments, the power combiner consists of a plurality of transmission lines that are connected to a common connection point.

Abstract: A method for communicating over a coaxial cable network is described. The method includes identifying at least one port in the coaxial cable network that provides high mutual isolation among nodes of the coaxial cable network when the port is terminated with an impedance that matches a characteristic impedance of coaxial cable in the coaxial cable network. The method also includes terminating the identified port with an impedance that is substantially mismatched with the characteristic impedance of the coaxial cable, and transmitting a signal from a first node in the network to a second node in the network.

Abstract: Coaxial and twisted pair conductive yarn structures reduce signal crosstalk between adjacent lines in woven electrical networks. A coaxial conductive yarn structure includes an inner conductive yarn having a plurality of conductive strands twisted together. An outer conductive yarn is wrapped around the inner conductive yarn. An insulating layer separates the inner and outer yarns. A twisted pair conductive yarn structure includes first and second conductive yarns, each including a plurality of conductive strands being twisted together. The first and second conductive yarns are twisted together to form a helical structure. In a woven electrical network, at least one conductor of adjacent conductive yarn structures is connected to ground to reduce signal crosstalk. Coaxial and twisted pair yarn structures may also be formed simultaneously with weaving or knitting the threads that make up the structures into a fabric.

Abstract: A power combiner for the combining of symmetric and asymmetric traveling wave energy comprises a feed waveguide having an input port and a launching port, a reflector for reflecting launched wave energy, and a final waveguide for the collection and transport of launched wave energy. The power combiner has a launching port for symmetrical waves which comprises a cylindrical section coaxial to the feed waveguide, and a launching port for asymmetric waves which comprises a sawtooth rotated about a central axis.

Abstract: The invention relates to a high-pass branch (7) of a frequency separating filter for ADSL systems comprising inductive components (11, 14) which dispose of magnet cores made of a soft magnetic amorphous or nanocrystalline. As a result, frequency separating filters are provided which comprise small structural shapes and which have especially beneficial properties in the relevant frequency and temperature range.

Abstract: A high power, non-directional tap coupler having low loss and expanded bandwidth using a novel airline coaxial line structure. Each of the main and secondary conductors forms a concentric structure of constant dimension over a substantial length inside a metallic housing. The coupled port conductor is connected perpendicularly at the middle point to the secondary conductor. The conductors form a novel structure in which coupling remains relatively constant over a broadband frequency range and main line VSWR remains low. The result is a non-directional tap coupler with a wideband operational frequency, a reduced physical size, and low loss and with good PIM performance.

Abstract: In an embodiment, a termination for a transmission line (or high frequency circuit) includes a matching circuit which provides a matching impedance for the transmission line and an electrical connection between the two, e.g., a bond wire. The electrical connection has a reactance matrix, which, when combined with the impedance provided by the matching circuit, provides a resultant termination resistance.

Abstract: A computer system for managing a computer network comprises a rack cabinet having a cabinet interior. A plurality of infrastructure connector assemblies are fixedly mounted on the rack cabinet in 1-U boundaries, each infrastructure connector assembly including a signal snap interface connector and a power snap interface connector. A plurality of compute elements are adapted to be slidably disposed within the cabinet interior of the rack cabinet in a stacked relationship, each compute element including at least one infrastructure connector assembly which releasably snap-interconnects with an associated infrastructure connector assembly mounted on the rack cabinet. A distributed power bay is disposed within the rack cabinet and provides central power for the computer system. A rack manager is disposed within the rack cabinet and includes the central video and I/O devices for the computer system.

Abstract: An electronic device is provided which is configured for attachment to a coaxial cable having a central conductor and an outer conductor. The electronic circuit includes connection conductors that each have a central conductor connection end that is configured to have a portion for engaging and penetrating into the central conductor and to have a further portion serving to impede the connection conductors from becoming withdrawn from the coaxial cable. The configuration of the ends of the connection conductors can be that of an arrowhead. An enclosure is provided around the electronic circuit and the portion of the coaxial cable to which the electronic circuit will be coupled by the connection conductors. In addition, the central conductor are made discontinuous between the points at which the connection conductors engage into the central conductor.

Abstract: An apparatus (100) uses power recovery from a combining circuit (125) to improve efficiency. A power combiner (125) generates multiple output signals (127, 133) from a combination of input signals (113, 114). One of the output signals from the power combiner is coupled to a power recovery circuit (135), and energy is recovered and preferably stored for later use.

Abstract: The circuit is capable of selectively adding r.f. inputs at A, B dependent on the bias voltage applied to varactor diodes D1, D2. In one bias condition of the diodes and hence one value of capacitance, the reactance between A and B and between the output and point D is equal to the reactance of transmission lines 10, 11 formed by co-axial cables, and quadrature inputs at A and B are combined at output O/p. At another value of acpacitance of the varactor diodes, corresponding to another bias voltage, the capacitance of the diodes and the series capacitances C1, C2 resonate with the inductances L1, L2 and input A is effectively isolated from input B. The circuit can be used to produce a power amplified composite video r.f. signal, input A being connected to a power amplifier for the video signal only and input B being connected to a pulse amplifier for the sync pulses only. This permits more efficient use of the amplifiers compared to a single amplifier for amplifying the composite video signal.

Abstract: A Coaxial Planar Magic Tee in which the tee portion is positioned inside a ridged waveguide. When used in one application the device also includes a load to dissipate power in an arm thereof.

Abstract: In a .pi./2 power divider, particularly a .pi./2 hybrid for the radio-frequency antenna of a nuclear magnetic resonance tomography apparatus, a decoupling circuit having unbalanced-to-ground line transformers is provided. Each branch thereof contains an all pass network consisting unbalanced-to-ground line transformers at the output. A broadband .pi./2 hybrid is obtained particularly with a broadband 3 dB/180.degree. hybrid as the decoupling circuit.

Abstract: The invention relates to matching asymmetrical discontinuites in transmission lines to give low reflection coefficients (less than five percent) over a wide frequency band (corresponding to at least an octave in wavelength). A group of asymmetrical discontinuites, such as impedance steps in a waveguide, are matched by considering a reference plane whose position varies with frequency at which the reflection coefficient for waves transmitted in one direction is equal to that for waves transmitted in the opposite direction. Matching elements are then provided which have a reflection coefficient at the reference plane which is equal and opposite to the reflection coefficient of the discontinuities. Matching is less difficult if the distance between the steps is less than a quarter of a guide wavelength at all frequencies in the wide band mentioned above and such an arrangement is a "reduced quarterwave transformer".

Abstract: A stub-support arrangement for a coaxial transmission line wherein the line has inner and outer conductors and the stub is in the form f oppositely disposed stubs each having a length of 1/8 wavelength at the center operating frequency or less. One of the stubs is an open-circuit stub and the other is a short-circuit stub. In the case of the stubs being of 1/8 wavelength, the characteristic admittances of the stubs are equal and in the case of the stubs being less than 1/8 wavelength the characteristic admittance of the open-circuit stub becomes larger and that of the short-circuit stub becomes smaller as the physical length of the stub is reduced.

Abstract: A hybrid junction device formed by an intermediate conductor located between and spaced from an outer conductor and a central conductor. The conductors are all about .lambda./4 in length. A first port is connected between the central conductor and the outer conductor at one end of the device and a second port is connected between the intermediate conductor and the outer conductor at the other end of the device. A third port is connected between the intermediate and the outer conductor at one end of the device while a fourth port is connected between the central conductor and outer conductor at the other end. The conductors may be co-axial or stripline type conductors.

Abstract: A hybrid uses stubs to provide 90 degrees of phase shift between output lines for feeding a circularly polarized antenna. Capacitive and inductive stubs have low and high characteristic impedances for broad bandwidth. The stubs can be located in the output lines for compactness, or in a T-section between an input line and the output lines, for compactness, to minimize undesired phase shift, and for ease of connection. The hybrid can include one quarter wave transformers having a characteristic impedance of geometric mean of the hybrid and antenna for improved axial ratio.

Abstract: Coaxial, impedance-matched, four-port 180.degree. hybrid junctions for multioctave bandwidth operation include a gap in the outer shields of a port and a stub line at their interface for forming a uniform electric field within the gap. This gap and the interconnections between inner conductors and shields of certain ports and the stub, and the lengths of the port and stub lines are such that power input to a first port divides equally and in phase between two other ports with matched impedances and no power is at present at the fourth port. Similarly power fed into the fourth port divides equally, but 180.degree. out of phase, between the two other ports with matched impedances and no power is present at the first port.