Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8188806 | Tuner and transformer formed by printed circuit board thereof A tuner and a transformer formed by printed circuit board thereof are provided. The transformer includes a first winding and a second winding. In which, the first winding forms a first inductor and the second winding forms a second inductor. The transformer is forme... | 05/29/2012 |
| 8130055 | High-frequency device and high-frequency circuit used therein A high-frequency device having a high-frequency circuit comprising a high-frequency amplifier, and an output-matching circuit receiving high-frequency power output from the high-frequency amplifier, in and on a multilayer substrate obtained by laminating pluralities... | 03/06/2012 |
| 8125291 | Electromagnetic interference noise separator Improved performance of a noise separator circuit capable of separating common mode (CM) and differential mode (DM) components of electromagnetic interference (EMI) noise are provided by arrangement of terminating impedances such that the circuit is fully symmetric ... | 02/28/2012 |
| 8104013 | Design method of semiconductor package substrate to cancel a reflected wave When the impedance of a first circuit is deviated from a standard value, a second circuit is designed for generating a second reflected wave to cancel a first reflected wave generated by the first circuit. Individual structural parts in a transmission line are inten... | 01/24/2012 |
| 8098114 | Matching circuit A matching circuit including a main matching block 51 inserted in a signal path and a series matching block 522, one end of which is connected to the main matching block 51, in which one end of a series connection of a switch 54 | 01/17/2012 |
| 8076994 | RF power transistor packages with internal harmonic frequency reduction and methods of forming RF power transistor packages with internal harmonic frequency reduction A packaged RE power device includes a transistor having a control terminal and an output terminal and configured to operate at a fundamental operating frequency, an RF signal input lead coupled to the control terminal, and an RF signal output lead coupled to the out... | 12/13/2011 |
| 8026773 | System and method for a digitally tunable impedance matching network The present disclosure relates generally to digitally tunable impedance matching networks. In one example, a digitally tunable impedance matching network is configured to produce an overall reactance value of approximately X, and includes multiple reactive component... | 09/27/2011 |
| 7978023 | Apparatus and method for wireless communications An apparatus including: a first transistor including a first port configured for connection to an antenna having a first impedance at a first frequency band, and a second port configured for connection to radio circuitry, the first port of the first transistor being... | 07/12/2011 |
| 7952448 | Device comprising an element with electrodes coupled to connections An adaptive cruise control system and a method for controlling the speed of a vehicle are disclosed. The system generally includes a controller which determines a torque instruction associated with a limit speed of the vehicle which is less than a selected speed. Th... | 05/31/2011 |
| 7928815 | Amplifier An amplifier according to the present invention includes an amplifying transistor, and an impedance converter circuit coupled to an output unit of the amplifying transistor and including a plurality of impedance converting transistors different in input impedance, w... | 04/19/2011 |
| 7880558 | Method and apparatus for adjusting load impedance of a distributed amplifier The application discloses a method and apparatus for adjusting internal load impedances, by section, at feed points present on a distributed amplifier's output transmission line. The method includes determining a summing-point load impedance (Zx) at an of... | 02/01/2011 |
| 7795992 | Electrical circuit comprising a differential signal path and component with such a circuit The invention relates to an electrical circuit that includes a first signal path having differential partial paths. An interface circuit arranged in the first signal path suppresses the common-mode signals in a blocking region of the signal path, but essentially doe... | 09/14/2010 |
| 7782155 | Circulator type monolithic device A monolithic circulator, intended to be connected to an antenna for transmitting and receiving high-frequency signals includes a differential amplifier adapted to provide a signal on an output of the circulator. The amplifier has a first and a second input and an ou... | 08/24/2010 |
| 7755448 | Differential impedance matching circuit and method with harmonic suppression Matching network circuits and a method are shown for suppressing a harmonic frequency in a matching network. The circuits and method involve impedance matching first and second differential input nodes to a single ended output node using a first reactive impedance s... | 07/13/2010 |
| 7750756 | Matching circuit The present invention has for its object to provide a matching circuit with multiband capability which can be reduced in size, even if the number of handled frequency bands rises. The matching circuit of the present invention comprises a load having frequency-depend... | 07/06/2010 |
| 7750757 | Matching circuit The present invention has for its object to provide a matching circuit with multiband capability which can be reduced in size, even if the number of handled frequency bands rises. The matching circuit of the present invention comprises a load having frequency-depend... | 07/06/2010 |
| 7710217 | Matching circuit and dual-band power amplifier There is provided a matching circuit, in which a main-matching block and a sub-matching block are connected in series. The sub-matching block includes: a series matching block of which one end is connected to the main-matching block; and a parallel matching network ... | 05/04/2010 |
| 7692513 | Acoustic surface wave filter module and method of manufacturing the same In order to reduce the parts required for matching of an SAW filter module, the SAW filter module 10 obtains matching for coupling SAW filters 10A to 10D with RF-IC 20 using impedance matching circuits 11A to 11D. The real part of ... | 04/06/2010 |
| 7639099 | Dual-frequency matching circuit The connection topology of input terminals 2, elements 4a, 4b, 4c and 4d and load 5 is designed similarly to a so-called “seven-segment display”, which is often used to display numerals on an ... | 12/29/2009 |
| 7633355 | Variable matching circuit A variable matching circuit includes a variable capacitance circuit formed of a capacitor coupled to varactor diode and provided between terminals, and a resonator-type circuit includes a plurality of inductors and a variable capacitance circuit formed of a capacito... | 12/15/2009 |
| 7579924 | Dual-frequency matching circuit The connection topology of input terminals (2), elements (4a, 4b, 4c and 4d) and load (5) is designed similarly to a “seven-segment display” that is often used to display numerals on a calcula... | 08/25/2009 |
| 7573352 | Dual-frequency matching circuit The connection topology of input terminals (2), elements (4a, 4b, 4c and 4d) and load (5) is designed similarly to a “seven-segment display” that is often used to display numerals on a calcula... | 08/11/2009 |
| 7573351 | Dual-frequency matching circuit The connection topology of input terminals (2), elements (4a, 4b, 4c and 4d) and load (5) is designed similarly to a “seven-segment display” that is often used to display numerals on a calcula... | 08/11/2009 |
| 7573350 | Resonator matching network An input-matching network including an acoustic resonator providing a virtual impedance to match impedance between a first component and second component. As an example, the first component may be an antenna and the second component may be an amplifier. The acoustic... | 08/11/2009 |
| 7570130 | Apparatus and methods for a fixed impedance transformation network for use in connection with a plasma chamber In certain embodiments, an apparatus for providing a fixed impedance transformation network for driving a plasma chamber includes a pre-match network adapted to couple between an Active RF match network and a plasma chamber load associated with the plasma chamber. T... | 08/04/2009 |
| 7570131 | Dual-frequency matching circuit The connection topology of input terminals (2), elements (4a, 4b, 4c and 4d) and load (5) is designed similarly to a so-called “seven-segment display”, which is often used to display numerals ... | 08/04/2009 |
| 7567144 | Dual-frequency matching circuit The connection topology of input terminals 2, elements 4a, 4b, 4c and 4d and load 5 is designed similarly to a so-called “seven-segment display”, which is often used to display numerals on an ... | 07/28/2009 |
| 7564322 | Dual-frequency matching circuit The connection topology of input terminals 2, elements 4a, 4b, 4c and 4d and load 5 is designed similarly to a so-called “seven-segment display”, which is often used to display numerals on an ... | 07/21/2009 |
| 7564321 | Dual-frequency matching circuit The connection topology of input terminals (2), elements (4a, 4b, 4c and 4d) and load (5) is designed similarly to a so-called “seven-segment display”, which is often used to display numerals ... | 07/21/2009 |
| 7518466 | Methods and apparatus for symmetrical and/or concentric radio frequency matching networks Apparatus and methods are provided that are adapted to match the impedance of an electrical load to an impedance of an electrical signal generator. The invention includes providing a plurality of electrical components adapted to collectively match the impedance of t... | 04/14/2009 |
| 7515016 | Reconfiguring impedance matching for high power circuits A method and an apparatus are provided for impedance matching using an analog circuit. The method comprises providing the analog circuit to substantially match a start impedance to an end impedance and tuning a performance parameter of an associated circuit using th... | 04/07/2009 |
| 7453328 | Bandwidth high-power T network tuner A wide bandwidth high-power T network tuner obtains its wide bandwidth operation by connecting a fixed capacitor between the input and ground, with the tuner using large, series connected variable capacitors for high power so as to solve the minimum capacitance prob... | 11/18/2008 |
| 7443264 | Compact impedance transformation circuit The present invention relates to an impedance transformation circuit (I10; 11a; 11b; 12) with a first contact pad (51) and a second contact pad (52) being spaced-apart and formed on a substrate (20). The impeda... | 10/28/2008 |
| 7411471 | High-frequency switch A high-frequency switch operating in a millimeter wave band that includes a signal path having a λ/4 transmission path, for part of two or more branch signal paths that branch from an input connection path via a branch point; an FET, which is shunt-connected betwee... | 08/12/2008 |
| 7400164 | Integrated circuit and method of improving signal integrity An Integrated Circuits (ICs) comprising a first output stage circuit and a second output stage circuit that share common input terminals and an output terminal of the first and second output stage circuits being selectably coupled between the input terminals and the... | 07/15/2008 |
| 7395028 | Switching apparatus and satellite antenna switching apparatus A satellite antenna switching apparatus has LNB ports to which LNBs are connected, receiver ports to which receivers that exchange signals with the LNBs are connected, cascade ports to which another switching apparatus is cascade-connected, and impedance circuits th... | 07/01/2008 |
| 7391285 | Film acoustically-coupled transformer One embodiment of the film acoustically-coupled transformer (FACT) includes a decoupled stacked bulk acoustic resonator (DSBAR) having a lower film bulk acoustic resonator (FBAR) an upper FBAR stacked on the lower FBAR, and, between the FBARs, an acoustic decoupler ... | 06/24/2008 |
| 7391281 | Method for suppressing resonant effect between capacitors connected in parallel A method for suppressing the resonant effect between capacitors connected in parallel is disclosed. By adjusting the length of the transmission line of the shunt capacitors, the performance of the shunt capacitors, which can be applied on various types of filtering ... | 06/24/2008 |
| 7388455 | Film acoustically-coupled transformer with increased common mode rejection The film acoustically-coupled transformer (FACT) has a first and second decoupled stacked bulk acoustic resonators (DSBARs). Each DSBAR has a lower film bulk acoustic resonator (FBAR), an upper FBAR atop the lower FBAR, and an acoustic decoupler between them FBARs. ... | 06/17/2008 |
| 7385459 | Broadband DC block impedance matching network An apparatus in one example has: a substrate having a microstrip line; a capacitor at a predetermined location along the microstrip line, the capacitor producing a discontinuity; and a ground plane assembly on the substrate, the ground plane assembly having an openi... | 06/10/2008 |
