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| Number | Title | Issue Date |
| 8115281 | Differential varactor A high-Q differential varactor includes reduced inner spacing dimensions between differential fingers. ... | 02/14/2012 |
| 8053866 | Varactor structures An improved varactor diode (20, 50) having first (45) and second (44) terminals is obtained by providing a substrate (22, 52) having a first surface (21, 51) in which are formed isolation regions (28, 58) separating first ( | 11/08/2011 |
| 7714412 | MOS varactor using isolation well The present invention provides a varactor that has increased tunability and a high quality factor Q as well as a method of fabricating the varactor. The method of the present invention can be integrated into a conventional CMOS processing scheme or into a convention... | 05/11/2010 |
| 7696604 | Silicon germanium heterostructure barrier varactor Methods and heterostructure barrier varactor (HBV) diodes optimized for application with frequency multipliers at providing outputs at submillimeter wave frequencies and above. The HBV diodes include a silicon-containing substrate, an electrode over the silicon-cont... | 04/13/2010 |
| 7569912 | Differential variable capacitors and their applications An integrated circuit design for differential variable capacitors uses an integration method to integrate an integrated circuit having differential variable capacitors as a whole, and takes the parasitic effect into consideration for the manufacturing process to low... | 08/04/2009 |
| 7525177 | Controllable varactor within dummy substrate pattern A dummy region varactor for improving a CMP process and improving electrical isolation from active areas and a method for forming the same, the varactor including a semiconductor substrate having a dummy region said dummy region including a first well region having ... | 04/28/2009 |
| 7518215 | One mask hyperabrupt junction varactor using a compensated cathode contact A semiconductor structure comprising a hyperabrupt junction varactor with a compensated cathode contact as well as a method of fabricating the same are disclosed. The method includes a single implant mask which is used in forming the subcollector/cathode, collector/... | 04/14/2009 |
| 7388247 | High precision microelectromechanical capacitor with programmable voltage source A high precision microelectromechanical capacitor with programmable voltage source includes a monolithic MEMS device having a capacitance actuator, a trim capacitor, and a high precision, programmable voltage source. The trim capacitor has a variable capacitance val... | 06/17/2008 |
| 7388275 | Electronic package with integrated capacitor Generally provided is a circuit assembly construction for controlling impedance in an electronic package. A large scale, parallel-plate capacitor includes two electrodes separated by a dielectric material. The electrodes serve as reference voltage planes for the ele... | 06/17/2008 |
| 7388276 | Metal-insulator varactor devices A varactor is configured with first and second conducting layers, spaced apart from one another such that a given voltage can be applied across the first and second conducting layers. Further, an insulator arrangement includes at least one insulator layer disposed b... | 06/17/2008 |
| 7369828 | Electronically tunable quad-band antennas for handset applications An electronically tunable quad-band antenna which includes a tunable high band antenna tuned by at least one tunable varactor associated therewith; the tunable high band antenna further includes a substrate, a patch element on said substrate, at least one voltage tu... | 05/06/2008 |
| 7355492 | Electronically controlled hybrid digital and analog phase shifter The inventions presented herein provide a electronically controlled phase shifters that incorporate analog and digital phase shift architectures in a novel manner that realizes the best advantages of each architecture. This combination of complementary phase shift a... | 04/08/2008 |
| 7345354 | Increased quality factor of a varactor in an integrated circuit via a high conductive region in a well The present invention provides an varactor, a method of manufacture thereof. In an exemplary embodiment, the varactor includes a semiconductor substrate and well of a first and second conductivity type, respectively. A conductive region in the well has a same conduc... | 03/18/2008 |
| 7335956 | Capacitor device with vertically arranged capacitor regions of various kinds A capacitor device selectively combines MOM, MIM and varactor regions in the same layout area of an IC. Two or more types of capacitor regions arranged vertically on a substrate to form the capacitor device. This increase the capacitance per unit of the capacitor de... | 02/26/2008 |
| 7329940 | Semiconductor structure and method of manufacture A structure comprises a single wafer with a first subcollector formed in a first region having a first thickness and a second subcollector formed in a second region having a second thickness, different from the first thickness. A method is also contemplated which in... | 02/12/2008 |
| 7301213 | Acoustic sensor A sound hole is provided in a silicon substrate. A diaphragm electrode is secured to the upper surface of the silicon substrate via at least one fixed end so as to cover the sound hole of the silicon substrate. The diaphragm electrode is provided with four projectio... | 11/27/2007 |
| 7294895 | Capacitive dynamic quantity sensor and semiconductor device A capacitive dynamic quantity sensor whose size is small and whose reliability and mass productivity are high is provided. In order to realize signal transmission from a lower electrode to an upper electrode, silicon columns which are electrically isolated from one ... | 11/13/2007 |
| 7274058 | Ferroelectric/paraelectric multilayer thin film, method of forming the same, and high frequency variable device using the same A ferroelectric/paraelectric multilayer thin film having a high tuning rate of a dielectric constant and small dielectric loss to overcome limitations of a tuning rate of a dielectric constant and dielectric loss of a ferroelectric thin film, a method of forming the... | 09/25/2007 |
| 7268643 | Apparatus, system and method capable of radio frequency switching using tunable dielectric capacitors An embodiment of the present invention provides an apparatus, comprising a radio frequency switch capable of using tunable dielectric capacitors as the switching element. The apparatus may further comprise a cross connector connecting a plurality of ports and wherei... | 09/11/2007 |
| 7268646 | Temperature controlled MEMS resonator and method for controlling resonator frequency There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a temperature compensated microelectromechanical resonator as well as fabricating, manufacturing, providing and/or controlling microelectromechanical reso... | 09/11/2007 |
| 7259418 | Semiconductor device including a MISFET and a MIS capacitor A semiconductor device comprises varactor regions Va and transistor regions Tr. An active region for a varactor is formed with a substrate contact impurity diffusion region obtained by doping an N well region with N-type impurity at a relatively high concentration. ... | 08/21/2007 |
| 7253788 | Mixed-signal systems with alternating impedance electromagnetic bandgap (AI-EBG) structures for noise suppression/isolation Alternating impedance electromagnetic bandgap (AI-EBG) structures, systems incorporating AI-EBG structures, and methods of making AI-EBG structures, are disclosed. ... | 08/07/2007 |
| 7235862 | Gate-enhanced junction varactor A semiconductor junction varactor utilizes gate enhancement for enabling the varactor to achieve a high ratio of maximum capacitance to minimum capacitance. ... | 06/26/2007 |
| 7236068 | Electronically tunable combine filter with asymmetric response Electronic filters include an input, an output and a plurality of resonators series coupled between the input and the output. Each of the resonators is coupled to a tunable capacitance. In addition, a coupling means is provided between non-adjacent ones of the reson... | 06/26/2007 |
| 7223667 | Compensated linearity voltage-control-capacitor device by standard CMOS process Apparatus and method of providing a CMOS varactor device having improved linearity. At least two differential varactor elements are connected in parallel. Each of the differential elements includes first, second and third doped regions in a well. A first gate contro... | 05/29/2007 |
| 7202567 | Semiconductor device and manufacturing method for the same A lower interconnection is provided on a semiconductor substrate. A MIM capacitive element is provided on a first interlayer insulation film in which the lower interconnection is buried, and includes a lower electrode, an upper electrode, and a dielectric film sandw... | 04/10/2007 |
| 7202537 | Versatile system for limiting electric field degradation of semiconductor structures The present invention provides a system for limiting degradation of a first semiconductor structure (304) caused by an electric field (314), generated from within the semiconductor substrate (302) by high voltage on a second semiconductor struct... | 04/10/2007 |
| 7190232 | Self-biased active VCO level shifter A voltage-controlled oscillator (VCO) circuit includes first, second, third, and fourth transistors, each with a first terminal, a second terminal, and a control terminal. The first terminal of the first transistor communicates with the first terminal of the second ... | 03/13/2007 |
| 7190846 | Image reader A CCD camera 10 picks up multiple adjacent targeted portions on a document 2, and to obtain distance information, a distance measurement unit 11 calculates the distances to the targeted portions of the document 2. Based on the distance in... | 03/13/2007 |
| 7187288 | RFID tag reading system and method An embodiment of the present invention provides an RFID tag reading system, comprising an antenna system associated with a portal through which said RFID tag may pass, said antenna system comprising: a plurality of non-uniformly spaced antenna elements arranged subs... | 03/06/2007 |
| 7183922 | Tracking apparatus, system and method An apparatus capable of tracking a target, comprising at least one near-field focused antenna comprising an array of elements and a phase shifter to form multiple fixed beams in the near-field, a sensor capable of sensing the location of the target, and a controller... | 02/27/2007 |
| 7183628 | Structure and method of hyper-abrupt junction varactors A method and device providing a HA junction varactor which may be fabricated with a reduced variation in C-V tuning curve from one varactor to the next. The process produces a varactor with an active region formed substantially by doping an Si substrate with various... | 02/27/2007 |
| 7173316 | Semiconductor device An N type semiconductor layer is epitaxially grown on a P type semiconductor substrate of which one end is grounded, and an element isolation layer made of a P type diffusion layer is formed by means of diffusion around the N type semiconductor layer in order to ele... | 02/06/2007 |
| 7154357 | Voltage tunable reflective coplanar phase shifters A phase shifter includes a substrate, a tunable dielectric film having a dielectric constant between 70 to 600, a tuning range of 20 to 60%, and a loss tangent between 0.008 to 0.03 at K and Ka bands positioned on a surface of the substrate, a coplanar waveguide pos... | 12/26/2006 |
| 7151411 | Amplifier system and method An embodiment of the present invention provides an amplifier system, comprising at least one variable impedance matching network, the output of which provides the input to at least one amplifier stage or provides an output of the power amplifier itself, and a bias n... | 12/19/2006 |
| 7126152 | Storage device A storage device includes a first electrode, a second electrode facing the first electrode, an inter-electrode material layer provided between the first electrode and the second electrode, and a voltage application unit applying a predetermined voltage to the first ... | 10/24/2006 |
| 7123115 | Loaded line phase shifter having regions of higher and lower impedance An embodiment of the present invention provides a phase shifter, comprising: a base dielectric layer; a tunable dielectric layer overlaying at least a portion of the base dielectric layer; and at least two conductors overlaying at least a portion of the tunable diel... | 10/17/2006 |
| 7112835 | Semiconductor device including a capacitance It is an object to obtain a semiconductor device including a capacitance having a great Q-value. In an SOI substrate comprising a support substrate (165), a buried oxide film (166) and an SOI layer (171), an isolating oxide film 167 (1... | 09/26/2006 |
| 7109926 | Stacked patch antenna A stacked antenna, comprising a lower path which may include a coplanar microstrip capable of feeding and stacked antenna and an upper patch which may include at least one slot-like part thereon, wherein the at least one lower patch may be coupled to the upper patch... | 09/19/2006 |
| 7106255 | Stacked patch antenna and method of operation therefore A stacked antenna comprising a first patch including at least one slot-like part thereon, a second patch including at least one strip-like part thereon; and wherein the at least one slot-like part of the first patch at least partially crosses over or partially cross... | 09/12/2006 |
