Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8174337 | Radio frequency switch for use in satellite receivers Embodiments of the invention generally provide a radio frequency switch, for example for use in a satellite receiver. The switch includes a plurality of input ports and a plurality of output ports, where output ports independently select signal paths from any of the... | 05/08/2012 |
| 8138852 | Duplexer and transceiver A duplexer according to the present invention includes a first port, a second port and a third port for external input/output, a first path formed between the first port and the third port, a second path formed between the second port and the third port, a phase shi... | 03/20/2012 |
| 8138853 | Front-end architecture of RF transceiver and transceiver chip thereof An RF front-end architecture is operated in either a transmitting or a receiving mode. The RF front-end architecture comprises an antenna, an impedance match network, a balun and a transceiver chip. The transceiver chip comprises first and second transmit/receive (T... | 03/20/2012 |
| 8089328 | Electronic switching device for high-frequency signals The invention relates to an electronic switching device for high-frequency signals. The invention is of particular use in the connection between a microwave frequency antenna and an electronic circuit. This circuit comprises one or two access points designed to be c... | 01/03/2012 |
| 8022786 | Front-end circuit of the wireless transceiver A front-end circuit of the wireless transceiver is disclosed to reduce the number of the pin count of the chip, and achieve the impedance matching. The circuit comprises an antenna unit, a receiver, and a transmitting block, all of which are connected together, wher... | 09/20/2011 |
| 8008988 | Radio frequency switch with improved intermodulation distortion through use of feed forward capacitor A radio frequency (RF) switch using a field effect transistor has 2nd order intermodulation distortion improved through use of a feed forward capacitor electrically connected between the gate and a voltage coupler connected between the source and drain of... | 08/30/2011 |
| 7936236 | Switchable combiner/divider with multiple inputs/outputs A switchable combiner/divider with multiple inputs/outputs is provided. The switchable combiner/divider with multiple inputs/outputs includes multiple input ports for receiving multiple incoming signals, multiple output ports, a switching part for alternately connec... | 05/03/2011 |
| 7898358 | Millimeter waveband switch A millimeter waveband switch which enables high isolation without increasing passing loss, includes a first switching element that is connected in series between input and output terminals through which a signal passes; and a first transmission line having an electr... | 03/01/2011 |
| 7893790 | Electronic device and method of matching the impedance thereof An electronic device includes a first and a second micro-electromechanical switch assembly on a substrate, between which first and second switch assembly a first line having a first impedance and a second line having a second impedance are present. The first switch ... | 02/22/2011 |
| 7889023 | Switching circuit for millimeter waveband control circuit Provided is a switching circuit for a millimeter waveband control circuit. The switching circuit for a millimeter waveband control circuit includes a switching cell disposed on a signal port path to match an interested frequency and including at least one transistor... | 02/15/2011 |
| 7880559 | Programmable microwave circuit The present invention relates to a programmable microwave circuit (1) four ports (3), and combinations of such circuits. Between each pair of ports there is at least one connection without amplification, at least one connection having amplification fro... | 02/01/2011 |
| 7852172 | High-power switch A low-loss Radio Frequency (RF) switch for high-power RF signals. The RF switch includes a first-biasing circuit connected to a first transistor and a second-biasing circuit connected to a second transistor. The RF switch switches its output signal between a first i... | 12/14/2010 |
| 7816996 | Non-reflective MPNT switch A non-reflective ring topology MPNT switching device comprises at least two poles, at least four throws, plural main switches, and plural bridge switches. The bridge switches enable all throws to be non-reflective throughout a wide frequency range. Each main switch ... | 10/19/2010 |
| 7719383 | High isolation electronic multiple pole multiple throw switch A high isolation electronic multiple pole multiple throw (MPNT) switching device is formed as a ring circuit that includes plural poles, plural throws, plural series switches and plural means for shunting. Each series switch receives a control signal, and each means... | 05/18/2010 |
| 7692514 | Linear antenna switch arm A linear antenna switch arm comprising a plurality of field effect transistors connected in series, the drain of each transistor being connected to the source of the next transistor at a join, the end source comprising one of a signal input or output po... | 04/06/2010 |
| 7675381 | Modulized wave filter A wave filter is installed in a multimedia wideband router, and includes a circuit board having a first low-pass wave-filtering circuit, and a band-pass wave-filtering circuit; the band-pass wave-filtering circuit consists of a high-pass wave-filtering circuit and a... | 03/09/2010 |
| 7671697 | High-isolation switching device for millimeter-wave band control circuit Provided is a high-isolation switching device for a millimeter-wave band control circuit. By optimizing a cell structure to improve the isolation of an off-state without deteriorating the insertion loss of an on-state, it is possible to implement a high-isolation sw... | 03/02/2010 |
| 7652546 | Ferroelectric varactors suitable for capacitive shunt switching An embodiment of the present invention provides an apparatus, comprising a radio frequency switch capable of using tunable dielectric capacitors as the switching element for a plurality of cross connected ports. Further, the RF switching may be accomplished by creat... | 01/26/2010 |
| 7612633 | High-frequency switch The present invention provides a high-frequency switch including: a first switching element connected between a first input/output terminal and a second input/output terminal; a second switching element connected between the second input/output terminal and the firs... | 11/03/2009 |
| 7595706 | High-frequency distribution circuit for distributing high-frequency signal The present high-frequency distribution circuit includes a switch circuit which passes a high-frequency signal from the other terminal of a high-frequency line to an output terminal if a receiver is connected to the output terminal and which grounds the other termin... | 09/29/2009 |
| 7586387 | Electronic device and method of matching the impedance thereof An adjustable impedance matching network comprising passive elements (2, 4, 10, 12) and at least a pair of micro-electromechanical switch-assemblies (6, 8, 14, 16), said switch-assemblies (6, 8, 14, 16) being connected to the passive elements ( | 09/08/2009 |
| 7570132 | Switch matrix A switch matrix assembly provides for excellent frequency performance while maintaining good isolation, insertion loss, and crosstalk performance. The switch matrix assembly can include an internal bus connector card that helps eliminate or reduce stubs on a matrix ... | 08/04/2009 |
| 7541889 | Pulse coupling apparatus, systems, and methods Apparatus and systems, as well as methods for using them, may include launching a pulse into an input port of a quarter-wave directional coupler having an thru port and an isolated port, and receiving a leading edge of the pulse as a voltage spike at an output port ... | 06/02/2009 |
| 7535315 | Dimensionally flexible sparse matrix topology A dimensionally flexible sparse matrix comprising multiple ports connected to a plurality of interconnected universal switches is disclosed. Each universal switch has at least three terminals and is switchable to connect any pair or all three terminals together. The... | 05/19/2009 |
| 7525396 | System, microwave switch and method for hot standby of radio frequency power amplifier Systems and methods for hot standby of radio frequency (RF) power amplifier are disclosed, an auxiliary RF power amplifier is added and SPDT microwave switches are adopted at the input and output sides of primary RF power amplifiers to control whether to make the au... | 04/28/2009 |
| 7495526 | Apparatus and method for reducing propagation delay in a conductor system selectable to carry a single signal or independent signals An apparatus and method is provided that reduces the propagation delay in a conductor carrying an electrical signal from a first area of a circuit to a second area of the circuit. The conductor is fabricated to include a first conductor extending from the first area... | 02/24/2009 |
| 7474171 | Method and apparatus for reducing dielectric charging in MEMS structures A Micro-Electro-Mechanical system (MEMS) device includes a doped semiconductor layer that is disposed outwardly from a substrate. The MEMS device further includes an insulation layer that is disposed outwardly from and in contact with the doped semiconductor layer. ... | 01/06/2009 |
| 7466211 | High-frequency switching module and frequency-characteristic adjusting method for high-frequency circuit A high-frequency switching module in which a high-frequency switch including a diode, which functions as a switching device, and a high-frequency filter including inductors and a capacitor are integrated with each other. The inductor defining a π-type high-frequenc... | 12/16/2008 |
| 7440568 | Bipolar pulse forming line A bipolar pulse forming transmission line module for linear induction accelerators having first, second, third, fourth, and fifth planar conductors which form an interleaved stack with dielectric layers between the conductors. Each conductor has a first end, and a s... | 10/21/2008 |
| 7436238 | Integrated voltage switching circuit An integrated circuit can be switched between operating modes without the need for a dedicated mode selection pin. A circuit for operation at a specified maximum supply voltage comprises first and second supply terminals, a first signal input for application of a re... | 10/14/2008 |
| 7425876 | Antenna switch circuit and high frequency module having the same An object of the present invention is to provide an antenna switch circuit that effectively reduces signal leakages at a cross point even at higher operating frequencies and a high frequency module containing said antenna switch module. The antenna switch circuit co... | 09/16/2008 |
| 7423499 | High-frequency switching apparatus A high-frequency switching apparatus is composed of a transfer circuit unit including a plurality of FETs, and a shunt circuit unit including a plurality of FETs, as well. An electromagnetic wave absorption material element is connected to an end of the shunt circui... | 09/09/2008 |
| 7423498 | Compact multilayer circuit A compact multilayer signal processing system. In the illustrative embodiment, the system is adapted for use with microwave signals. The system includes a first mechanism for receiving an input signal and selectively routing the input signal onto a first signal path... | 09/09/2008 |
| 7420445 | Phase change control devices and circuits for guiding electromagnetic waves employing phase change control devices A circuit for guiding electromagnetic waves includes a substrate for supporting components of the circuit. The circuit includes a control device which includes a first conductive element on the substrate for connection to a first component of the circuit and a secon... | 09/02/2008 |
| 7417515 | On-chip TX/RX antenna switching An on-chip antenna switching scheme for Gigahertz frequencies where for the transmission path a first on-chip switching means is coupled between an on-chip power amplifier and an antenna. In the receiving path a second on-chip switching means at an input to an on-ch... | 08/26/2008 |
| 7403082 | Dual mode antenna switch module A dual mode antenna switch module (ASM) comprises a UMTS TX port; a UMTS RX port; and a UMTS duplexer, comprising a common port, a TX port coupled to the UMTS TX port and an RX port coupled to the UMTS RX port. The ASM further comprises an antenna port; at least one... | 07/22/2008 |
| 7391284 | High-frequency switch A high-frequency switch includes a transmission terminal, an antenna terminal, a reception terminal, and a voltage-control terminal; a first diode, the cathode thereof being electrically connected to the transmission terminal, and the anode being electrically connec... | 06/24/2008 |
| 7391282 | Radio-frequency switch circuit and semiconductor device Switch sections composed of a plurality of FETs 111 to 118 and 121 to 128 connected in series are provided between input/output terminals 161 and 162 and ground terminals 181 and 182, and between the input/outp... | 06/24/2008 |
| 7379751 | Multi-band transceiver and radio communication device using the transceiver A multi-band transceiver has a function of sharing transmitted and received signals of multiple frequency bands by the same antenna. The multi-band transceiver mounts multiple filters that correspond to the multiple frequency bands and multiple amplifiers for amplif... | 05/27/2008 |
| 7373115 | Apparatus for transmit and receive switching in a time-division duplexing wireless network A transmit-receive (T/R) switch for coupling a TDD transceiver to an antenna. The T/R switch comprises 1) a first circulator having a first port for receiving a transmit signal from the transceiver during transmit mode, a second port for sending the transmit signal ... | 05/13/2008 |
