Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7924121 | Dispersion-free radial transmission lines A dispersion-free radial transmission line (“DFRTL”) preferably for linear accelerators, having two plane conductors each with a central hole, and an electromagnetically permeable material (“EPM”) between the two conductors and surrounding a channel connecti... | 04/12/2011 |
| 7915980 | Coax core insulator waveguide A communication device consistent with certain implementations has a coaxial cable having length and first and second ends. The coaxial cable further has a central conductor, a dielectric insulator surrounding the central conductor, and an electric shield conductor ... | 03/29/2011 |
| 7414492 | Flexible microwave transmission line A power amplifier (power amplifier) having multiple solid state sub-amplifiers connected in parallel between the power amplifier input and the power amplifier output are described. The signal input to the power amplifier is provided to an RF splitter connected betwe... | 08/19/2008 |
| 7391288 | Zeroeth-order resonator A high frequency resonator circuit and method of fabrication is described which has a resonant frequency independent of physical resonator dimensions. The resonator operates in a zeroeth-order mode on a composite right/left-handed (CRLH) transmission line (TL). The ... | 06/24/2008 |
| 7339117 | Multi-conductor electrical connector cable having improved electromagnetic characteristics A multi-conductor electrical connector member includes a plurality of electrical conductors arranged in a spaced apart and generally parallel side-by-side manner. The plurality of electrical conductors includes a signal source end. At least one electrical discontinu... | 03/04/2008 |
| 7334325 | Apparatus and method for improving coupling across plane discontinuities on circuit boards The invention relates to an apparatus and method for improving coupling across plane discontinuities on circuit boards. A circuit board includes a discontinuity, e.g., a split, slot, or cutout, formed on a voltage reference plane. A conductive layer overlies the dis... | 02/26/2008 |
| 7336139 | Flexible interconnect cable with grounded coplanar waveguide A high speed flexible interconnect cable includes a number of conductive layers and a number of dielectric layers. Conductive signal traces, located on the conductive layers, combine with the dielectric layers to form one or more high speed electrical transmission l... | 02/26/2008 |
| 7330090 | Zeroeth-order resonator A high frequency resonator circuit and method of fabrication is described which has a resonant frequency independent of physical resonator dimensions. The resonator operates in a zeroeth-order mode on a composite right/left-handed (CRLH) transmission line (TL). The ... | 02/12/2008 |
| 7319196 | Bonding wire and bonded connection A bonding wire (1) includes a matrix material (2) and a filler (3) embedded in this matrix material (2), the coefficient of thermal expansion of the filler (3) being lower than the coefficient of thermal expansion of the matrix mat... | 01/15/2008 |
| 7298234 | High speed electrical interconnects and method of manufacturing High-speed interconnect systems for connecting two or more electrical elements are provided. Interconnect system has the means, which could reduce the microwave loss induced due to the dielectrics. Reducing the effective loss tangent of the dielectrics reduces the m... | 11/20/2007 |
| 7230506 | Crosstalk reduction for a system of differential line pairs A technique is presented for minimizing crosstalk between adjacent differential signal pairs in communications. A backplane embodiment wherein the backplane includes a plurality of differential signal line pairs, is presented. A first differential signal line pair c... | 06/12/2007 |
| 7227430 | Multichip module A bondwire transition arrangement for interconnecting a signal port on one IC of a multichip module with a signal port on another, adjacent, IC of the same module employs a distributed signal-transition process in which the signal on one port appears as subsignals a... | 06/05/2007 |
| 7193490 | High frequency transmission line and high frequency board Since a width of an edge portion of a signal line of a first high frequency transmission line is changed with respect to a width of another portion thereof, a deviation of impedances in a connection portion of the first and second high frequency transmission lines c... | 03/20/2007 |
| 7167936 | Circuit board having an integrated circuit for high-speed data processing Circuit board having a plurality of bus lines (6), which run on the circuit board (1) essentially parallel to a preferred direction of the circuit board (1), and having at least one integrated circuit (3) for the high-speed data processin... | 01/23/2007 |
| 7164333 | Standing wave barrier A standing wave barrier for at least one radio frequency cable having a cable axis has at least one metallic base web that proceeds parallel to the cable axis from a first web end to a second web end. The web ends are coupled to one another in terms of radio frequen... | 01/16/2007 |
| 7088201 | Three-dimensional quasi-coplanar broadside microwave coupler A broadside 90° microwave coupler is composed of three metal layers in a homogeneous dielectric media. The coupler is constructed in a multi-layer configuration with two conductor strips arranged on top of each other so as to be electro-magnetically coupled. A grou... | 08/08/2006 |
| 7076378 | Device and method for providing power line characteristics and diagnostics An apparatus determines a characteristic of a portion of a power line. The apparatus comprises a coupling device in communication with a processor. The coupling device receives a signal from a power line and the processor receives the signal from the coupling device... | 07/11/2006 |
| 7046103 | Electric filter comprising a plurality of thin film bulk acoustic resonators An electric filter comprises a plurality of thin film bulk acoustic resonants (10, 11) arranged in series and in parallel which have electrodes (24, 25) of different working area (L) and optionally a piezoelectric layer (23) of different thickne... | 05/16/2006 |
| 7026886 | Miniaturized microwave integrated circuit using complementary conducting surfaces The invention discloses a two-dimensional array waveguide structure implemented with multi-layer process or monolithic integrated circuit process. The structure includes a first metal layer, a second metal layer and a dielectric layer. The dielectric layer lain betw... | 04/11/2006 |
| 7019219 | Quadrax to Twinax conversion apparatus and method A Quadrax to Twinax conversion apparatus includes stacked trace layers of transmission line with a ground plane between the trace layers. Embodiments include trace layers of stripline or microstrip. Orthogonal plated through holes include a diagonal pair of through ... | 03/28/2006 |
| 6973225 | Techniques for attaching rotated photonic devices to an optical sub-assembly in an optoelectronic package The techniques of the present invention are directed towards setting a photonic device into a groove of a substrate, which is then attached to the chip sub-assembly in a way that the resulting optoelectronic package has a low profile and the interconnects between th... | 12/06/2005 |
| 6903634 | Method of detuning resonant frequencies of a power distribution system An approach to enhance the noise immunity of high-speed digital signals by means of a resonance-free environment is developed. Resonance detuning is achieved by appropriately reshaping the layout of the power/ground planes. Resonant properties of the power distribut... | 06/07/2005 |
| 6859180 | Gravity-actuated submarine antenna An antenna including a feed tube with radial fins and circular plates at the ends of the tube and fins thereby forming a boundary for a plurality of resonant cavities. Curved plates, connected to the tube by switches of a switching system, partially encompass and su... | 02/22/2005 |
| 6825743 | Substrate enhancement for improved signal characteristics on a discontinuous transmission line A circuit for processing radio frequency signals. The circuit can include a substrate board that has at least one dielectric layer (100) having a first set of substrate properties over a first region (102). The first set of substrate properties can inc... | 11/30/2004 |
| 6812803 | Passive transmission line equalization using circuit-board thru-holes A high-speed router backplane, and method for its fabrication, are disclosed. The backplane uses differential signaling trace pairs on multiple high-speed signaling layers, the high-speed signaling layers separated by ground planes. Plated signaling thru-holes conne... | 11/02/2004 |
| 6774741 | Non-uniform transmission line and method of fabricating the same A non-uniform transmission line includes at least one patterned conductive layer, a dielectric layer adjacent to the patterned conductive layer(s), and an insulating layer surrounding the patterned conductive layer(s) and the dielectric layer. ... | 08/10/2004 |
| 6700463 | Transmission line structure for reduced coupling of signals between circuit elements on a circuit board A transmission line structure for reduced coupling of signals between circuit elements. The structure includes an RF transmission line disposed on a circuit board (100) formed from a dielectric substrate material. The RF transmission line includes an elon... | 03/02/2004 |
| 6677831 | Differential impedance control on printed circuit A new method to control differential signal trace impedance allows flexible use of different signal trace width and spacing while maintaining constant differential impedance in printed circuit boards. Differential impedance of a signal pair is determined ... | 01/13/2004 |
| 6564274 | Modular architecture for small computer networks In concentrated multiprocessor systems conforming to the presently disclosed modular architecture, a host processor and plural client processors are packaged in a single box containing a high speed (short length) bus connecting all of the processors, and ... | 05/13/2003 |
| 6310527 | Multi-layer circuit board including reactance element and a method of trimming a reactance element in a circuit board A reactance of a reactance element in a multi-layer circuit board apparatus is trimmed by cutting a portion of the circuit pattern of the reactance element with a laser beam. The reactance element is sandwiched between grounded layers. A coil circuit patt... | 10/30/2001 |
| 6239671 | Transmission or delay line transformers A transmission or delay line transformer comprising a plurality of transmission or delay lines (101-110) so arranged that the inputs to the lines are connected together in parallel to provide a transformer input (130) and the outputs of the lines are conn... | 05/29/2001 |
| 5966056 | Method and apparatus for enabling the transmission of multiple wide bandwidth electrical signals Method and apparatus for enabling the transmission of high bandwidth analog and digital data over cable lengths of more than 1000 feet through low cost semishielded or unshielded four wire cable are disclosed. Three balanced mode signals are transmitted u... | 10/12/1999 |
| 5939952 | Flat flexible cable with pseudo-twisted conductors A flat flexible electrical cable includes a pair of pseudo-twisted conductors on a flexible dielectric substrate. Each conductor includes alternate straight and oblique sections. The straight sections of the conductors are generally parallel to each other... | 08/17/1999 |
| 5923227 | Non-linear dispersive transmission line A non-linear dispersive transmission line includes a plurality of substantially block-like shaped capacitor elements (4) arranged in sequence in at least two arrays. The even numbered elements (4b, 4d etc) extend side by side to form a first array and the... | 07/13/1999 |
| 5872490 | Signal cable having parallel arranged shielded conductive lines A signal cable is provided with a first signal line and second signal line which are respectively connected between a first signal device and a second signal device and are constructed so as to transmit appointed signals, wherein the second signal line is... | 02/16/1999 |
| 5830301 | Method of making a multi-layer controllable impedance transition device for microwaves/millimeter waves A composite structure including stacked layers of dielectric material hav a center conductor in the form of a cylindrical via which is surrounded by an annular dielectric region and an outer ground plane comprised of contiguous pairs of generally circula... | 11/03/1998 |
| 5770988 | Thin-film multilayered electrode and method of fabricating same A thin-film multilayered electrode of a high frequency electromagnetic field coupled type is disclosed. The thin-film multilayered electrode comprises thin-film conductors and dielectric thin films alternately stacked on a dielectric substrate so that a p... | 06/23/1998 |
| 5712585 | Sysem for distributing clock signals A system for convening between parallel data and serial data is described. In the system (b 10), individual bits of the parallel data (12) are latched into individual registers (117). Each register (117) is coupled to a corresponding AND gate (110) which ... | 01/27/1998 |
| 5675298 | Low-loss, low-inductance interconnect for microcircuits A low-loss, low-inductance metal interconnect for an electrical signal in a microcircuit comprises a plurality of spaced-apart generally parallel metal interconnect lines disposed in a plane over an insulating layer. The metal interconnect lines are inter... | 10/07/1997 |
| 5644276 | Multi-layer controllable impedance transition device for microwaves/millimeter waves A composite structure including stacked layers of dielectric material hav a center conductor in the form of a cylindrical via which is surrounded by an annular dielectric region and an outer ground plane comprised of contiguous pairs of generally circula... | 07/01/1997 |
