Matches 101 - 150 out of 214 < 1 2 3 4 5 >
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5949299 Multilayered balance-to-unbalance signal transformer  
A multilayered balun transformer in which not only loss can be suppressed but also phase difference or level difference between balanced signal terminals can be suppressed and which become easy to...
5929718 Apparatus and method for transmitting electrical power and broadband RF communications signals through a dielectric  
An interface device permits installation of a video system by direction broadband RF signals from an outdoors transmission line to an indoors receiver and by providing electrical power from the...
5917386 Printed circuit transformer hybrids for RF mixers  
A high frequency partial transformer hybrid includes a first divided circular conductive element affixed to one side of an insulated substrate and a second split circular conductive element affixed...
5909464 Serial communications interface that supports multiple interface standards  
An interface for connecting data-terminal-equipment (DTE) to a range of data-communication-equipment (DCE) using a multiplicity of interface standards is provided. The interface includes a DTE...
5898409 Broadband antenna element, and array using such elements  
A broadband horn-like, linearly polarized antenna element is driven from a microstrip line and a balun. The horn is skeletonized, and has no sides, and consequently operates in TEM mode for broad...
5886591 Device including a passive coupler circuit phase shifting through 180°  
A device includes a passive coupler circuit with lumped elements for coupling a first A.C. signal having a given center frequency (fo) present on a first primary port (P1) to two second A.C....
5861853 Current balanced balun network with selectable port impedances  
A half-wave balun network balanced for at least current is provided by a conductor section having contiguous conductor portions 130 and 140. A balanced port 110 is provided between ends of the...
5801749 Universal audio/video signal converter  
In low power audio and video applications, an audio/video signal converter converts balanced and unbalanced signals using a first converter which converts a balanced signal to an unbalanced signal...
5793262 Build-out network for a built-in type balanced line driver circuit  
A build-out Network (BON) built-in type balanced line driver circuit is provided. The (BON) built-in type balanced line driver circuit comprises a pair of transistors, the emitters of which are...
5781078 Filter enhancement using input-to-output ground isolation and shielding  
A method and apparatus for filter enhancement in an electrical system (8) is provided. The electrical system (8) includes an input circuit (10) having a filter (14) and an output circuit (20)...
5778303 Multiplexed audio-video signal transmission system through pair-wire  
A multiplexed audio-video signal transmission system has a camera-equipped intercom which produces a balanced audio-video signal. A twisted pair-wire connected to the intercom transmits a...
5774801 High dynamic range mixer having low conversion loss, low local oscillator input power, and high dynamic range and a method for designing the same  
A double-double-balanced mixer includes first and second radio frequency baluns and first and second local oscillator baluns formed on a dielectric substrate and connected to two diode rings. An...
5767754 Balanced to unbalanced transmission line impedance transformer exhibiting low insertion loss  
A balanced to unbalanced transmission line transformer is disclosed performing impedance transformation with improved frequency response across a wide operational bandwidth. The transmission line...
5742213 Unbalanced to balanced high impedance ratio wideband transformer circuit  
A transformer circuit disclosed performs wideband impedance transformation (matching) and can be used for voltage step-up and step-down applications. The circuit disclosed is comprised of two...
5738546 Printed circuit board mounted jack  
A printed circuit board mounted jack includes an electrically conductive housing containing a dielectric support. A center pin is contained within the dielectric support. A plurality of terminating...
5734355 Coupling device for coaxial cable and antenna apparatus  
A coupling device for coaxial cable which can maintain coaxial transmission mode of low loss is provided. In the coaxial cable coupling device of the capacitor coupling type, in the case where...
5677959 Audio signal source balancing adapters  
An audio signal source balancing adapter provides connection between an unbalanced audio source and a balanced input amplifier of an audio processing instrument, such as an audio mixer panel, with...
5633614 Unbalanced to balanced signal line coupling device  
Disclosed is a passive, highly efficient, low noise coupling device that includes a balun and noise reduction circuitry uniquely configured for converting an unbalanced video signal on a 75 ohm...
5619283 Double tuned RF circuit with balanced secondary  
A band switchable double tuned circuit having a balanced secondary is presented. A primary tunable tank circuit with a plurality of first inductances is tuned to a first frequency by a first...
5619172 High impedance ratio wideband transformer circuit  
A transformer circuit disclosed performs wideband impedance transformation (matching) and can be used for voltage step-up and step-down applications. The circuit disclosed is comprised of two...
5592133 Build-out network for a built-in type balanced line driver circuit  
The present invention relates to a BON built-in type balanced line driver circuit which reduces the size and cost of the unit by excluding duplication of impedance circuits, excluding duplication...
5587692 Common mode current cancellation in twisted pairs  
A method for connecting together two twisted pair lines in a LAN so as to avoid common mode current. The invention recognizes that the impedance to ground is different for each wire in the twisted...
5574411 Lumped parameter balun  
A balun, which does not use magnetic coupling and is easily integrated in MMICs, is formed of lumped parameter inductive and capacitive circuit elements. In one embodiment, a termination circuit is...
5548254 Balanced-to-unbalanced transformer  
A balanced-to-unbalanced transformer for interconnecting a balanced signal transmitted on a balanced cable and an unbalanced signal transmitted on an unbalanced cable through a transformer....
5523693 Balanced signal source  
The bridge circuit receives the balance signal output from the balanced signal source, which generates a broad-band balanced signal over a frequency band of a direct current to several tens of MHz...
5483136 EMI filter and method  
An improved EMI filter design is provided for an inverter operated dynamoelectric machine. A lossy balun wound choke is connected between a power supply in the form of a bridge rectifier and the...
5475346 Impedance matching balum arrangement using a low pass filter  
A balanced line such as 100 ohm UTP is coupled to an unbalanced line or port via a low pass filter enabling color video signals to be passed along the line without degradation. The preferred form...
5467061 Flat cable to flat parallel wire cable  
A LAN which uses flat telephone cable having at least four conductors. The inner conductors are joined together and the outer conductors are joined together at each node thereby making reversals of...
5451914 Multi-layer radio frequency transformer  
A transformer (300) includes several layers of substrate (202, 204, 206, 208). Sandwiched between first set of layers (204 and 206) is a runner that forms two interconnected spirals (323 and 324)....
5420551 Circuit for broadband video transmission over unshielded twisted wire pairs  
Disclosed is a circuit which permits transmission of broadband analog CATV video signals on unshielded twisted wire pairs. The circuit includes an autotransformer with a ground connection coupled...
5416451 Circuit and method for balun compensation  
A novel circuit and method for providing amplitude and phase compensation for a balun in order to provide first and second voltage signals that are balanced has been provided. The compensation is...
5412355 Resonant balun with arbitrary impedance  
A balun circuit comprising a first signal source connected across a first inductive means and connected to the latter a first capacitive means. To that network are connected a second signal source,...
5389900 Adapter for transmission of color components on separate twisted wire pairs  
Disclosed is an adapter which permits transmission of red, green and blue video signals over separate unshielded twisted wire pairs. Crosstalk is minimized by wideband video chokes coupled to each...
5367273 Adapter for video and audio transmission  
Disclosed is an adapter which permits unbalanced video and audio baseband signals to be transmitted over unshielded twisted pair wiring. The adapter includes low loss transformers which produce a...
5363068 Autotransformer capable of passing a DC signal as well as a balanced output signal  
Disclosed is a series tuned resonant autotransformer which passes baseband video signals so that more than one non-synchronized channel can be sent over unshielded twisted pair wires sharing a...
5285179 Double tuned circuit with balanced output and image trap  
Conversion of an RF signal amplifier from an unbalanced signal configuration to a balanced signal configuration is provided while including an image trap for both sides of the balanced circuit. The...
5280647 Double-balanced mixer with triple-layer film transformers  
A multi-layered double-balanced mixer includes first and second transformers formed as first, second and third winding film layers separated by insulating films and stacked on one side of a...
5280648 Double-balanced high level wide band RF mixer  
A double-balanced wide band RF mixer includes a first bifilar balun transformer coupling a high level source of RF signal to the primary windings of a pair of trifilar balun transformers. The two...
5265267 Integrated circuit including a surface acoustic wave transformer and a balanced mixer  
In a radio transceiver (100), an IF stage (110) is formed on a single substrate. A balanced or image rejection mixer (204) having two pairs of inputs and a pair of outputs is integrated on an IC...
5200718 Balun transformer with common mode coil  
A balun transformer with a common mode coil is formed by parallel two-strand cable wound around a common core having through-holes through which the cable passes. The common mode coil can be...
5189434 Multi-mode antenna system having plural radiators coupled via hybrid circuit modules  
A hybrid circuit module having first and second pairs of input terminals and four output terminals. First, second, third and fourth baluns each include first and second transmission line wires. The...
5148130 Wideband microstrip UHF balun  
A wideband balun for converting between unbalanced and balanced signals and impedances utilizes two single-ended networks connected in parallel at the unbalanced side. The networks provide equal...
5133668 Electrical connector apparatus  
An electrical connector is provided for selectively attaching an unbalanced data transmission conductor to electronic data processing equipment. The equipment includes a balanced data transmission...
5132647 Band pass and elimination filter network for electric signals with inputs symmetric to a specific reference level  
A bandpass and/or elimination filter network for electric signals, includes an input circuit (1) which has the capacity to symmetrize and adapt the input impedance, and two branches (B C) and (D E)...
5121090 Balun providing dual balanced outputs  
A dual output balun distributes substantially all of the available power in a single ended input signal applied thereto (less small parasitic losses) equally to two or more pairs of push-pull...
5109206 Balanced low-pass common mode filter  
A balanced L-section low-pass common mode filter is connected in series with balanced data I/O lines to remove common mode signals from balanced line difference mode signals. The filter includes...
5045822 Active power splitter  
Input power is applied to an input inductor/capacitor combination. The gates of each of two FETs are connected to the other side of the input inductor. The source of each FET is connected to ground...
5039891 Planar broadband FET balun  
Three active FET baluns, using resonant, reactive and resistive/reactive compensation are disclosed suitable for monolithic implementation. A single balanced mixer configuration including a...
5023576 Broadband 180 degree hybrid  
A broadband 180 degree hybrid having lumped or semi-lumped elements is comprised of a network of low and high pass filters. A 180 degree phase differential is obtained by splitting an input signal...
4999594 AC line filter with tapped balun winding  
An AC line filter having a balun coupled to an AC voltage input and an AC voltage output. The balun includes a first and a second set of windings with a first and a second tap on the first and...
Matches 101 - 150 out of 214 < 1 2 3 4 5 >