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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7804357 | Distributed amplifier In order to allow to make compact a distributed amplifier by dispensing with any choke coil and reduce its cost, the distributed amplifier is configured such that it comprises an input side transmission line, an output side transmission line, and plural amplifier ci... | 09/28/2010 |
| 7372336 | Small-sized on-chip CMOS power amplifier having improved efficiency A small-sized on-chip complementary metal-oxide semiconductor (CMOS) Power Amplifier having improved efficiency is provided herein. The on-chip CMOS power amplifier is capable of improving efficiency and maximizing output thereof by enhancing a K factor, which may c... | 05/13/2008 |
| 7321752 | Linear amplification arrangement with non-linear amplifier element for a mobile radio device A system and method to optimize the efficiency of an amplifier device is provided by the including a non-linear amplifier in a mobile radio device. A phase displaced signal in relation to the input signal is respectively produced in the amplifier device with a non-l... | 01/22/2008 |
| 7205836 | SiGe differential cascode amplifier with miller effect resonator A high-power, high frequency (1–100 GHz) power amplifier, made using SiGe transistors. A differential common-emitter amplifier section supplies the voltage amplification, allowing the total voltage swing of the amplifier to be twice the breakdown voltage of the in... | 04/17/2007 |
| 7190240 | Multi-section coupler assembly A coupler assembly may include first and second electromagnetic couplers connected together. In some examples, the couplers may be connected in cascade configuration, with at least the second coupler including at least third and fourth couplers connected in tandem c... | 03/13/2007 |
| 6424219 | Operational amplifier An operation amplifier 1 for driving an liquid crystal panel is constructed of: differential stage circuits 2, 3, drive stage circuits 4, 5, output transistors 11 to 14, switching means for switching the connections of the differential stage circuits 2, 3... | 07/23/2002 |
| 6265937 | Push-pull amplifier with dual coplanar transmission line A means of connecting a plurality of essentially identical active devices is presented for the purpose of multifunction and multiple function operation. These devices, mounted on a chip, are flip-mounted onto a circuit formed on a base substrate and havin... | 07/24/2001 |
| 5793516 | Optical modulator circuit A circuit arrangement is presented for an optical modulator with an optical modulator diode (MD) driven in the blocking direction which, in addition to a shunt resistor (RN) wired in parallel with the modulator diode, contains a damping resistor (RD) wire... | 08/11/1998 |
| 5614863 | Method and system for increasing the power efficiency of a balanced amplifier/antenna combination A system for increasing the power efficiency of a balanced amplifier driven antenna arrangement includes a push-pull class B power amplifier circuit which is responsive to a periodic, time varying input signal and generates at least two output signals in ... | 03/25/1997 |
| 5339043 | Wave propagation signal transmission device and applications of the device to the amplification of such signals The wave propagation signal transmission device according to the invention comprises two coupled distributed-constant wave propagation lines. The lines include active members of amplifying signals in transit in the form of linear and continuous components... | 08/16/1994 |
| 5218714 | CATV repeating amplifier circuitry Bidirectional CATV (Cable Television) repeating amplifier circuitry has a first splitter, a second splitter, trunk distribution terminals used at a low level, and subscriber distribution terminals used at a high level. A distribution circuit distributes a... | 06/08/1993 |
| 5130664 | One GHZ CATV repeater station An apparatus for and a method of RF amplification of signals up to 1 GHz. The apparatus, known as a repeater station, is for use in Community Antenna TeleVision transmission (CATV). The RF amplification (gain) stage includes two multitransistor distribute... | 07/14/1992 |
| 5053719 | Wide-band push-pull amplifier A radio frequency amplifier includes a first pair of quadrature couplers arranged to provide in response to an input signal first and second radio frequency signals having equal amplitudes and a first single-ended amplifier is fed by said first radio freq... | 10/01/1991 |
| 5017886 | RF power combiner using baluns An RF power combiner combines the power of several microwave high power FET amplifiers. A plurality of baluns which convert a balanced transmission line to an unbalanced transmission line and have outputs which are 180° out of phase from each other may b... | 05/21/1991 |
| 4994755 | Active balun A double balun circuit is provided by connecting two pairs of circut types. The first circuit, a distributed divider circuit, includes first and second pluralities of field effect transistors, a common input transmission line, and a first and second outpu... | 02/19/1991 |
| 4857869 | High frequency push-pull transformer This invention relates to a push-pull transformer for use in a high frequency push-pull amplifier. This push-pull transformer has a coaxial line whose one end is connected to an input terminal, while the other end thereof is provided with an internal cond... | 08/15/1989 |
| 4619001 | Tuning systems on dielectric substrates A tuning system employs a specific resonant circuit which includes two electrodes confronting each other through a dielectric interposed therebetween. Each of the two electrodes has at least one bent portion to present a lumped-constant inductance and has... | 10/21/1986 |
| 4559476 | Radio-frequency amplifier A radio-frequency amplifier includes at least two double-ended electron discharge devices in coaxial-type, radio-frequency cavity-resonator circuits. Each discharge device has a discharge region so that the amplifier comprises a plurality of longitudinall... | 12/17/1985 |
| 4282492 | Modular multiple channel signal processor A multiple channel amplifier providing both gain and/or phase shift to a microwave signal is formed of a set of transmission lines connected in parallel by means of a power splitter at the input end and a power combiner at the output end of the set of tra... | 08/04/1981 |
