Patents Assigned to M/A-Com, Inc.
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Publication number: 20080272860Abstract: A dielectric resonator circuit is provided that is tunable over a broad frequency range and/or a broad bandwidth range. The center frequency is made tunable over a broad range by use of a dielectric tuning plug that is positioned in a through hole within the resonator. The bandwidth is made tunable over a broad range by tilting the resonators relative to the enclosure to increase the effective height of the cavity as seen by the resonator.Type: ApplicationFiled: May 1, 2007Publication date: November 6, 2008Applicant: M/A-Com, Inc.Inventor: Kristi Dhimiter Pance
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Publication number: 20080272861Abstract: The invention is an apparatus and technique for tuning the cross coupling of resonators in a dielectric resonator circuit. A cross coupling element such as a coaxial cable having a first end positioned adjacent a first resonator in the circuit and a second end position adjacent a second resonator is supported on the housing of the circuit intermediate its first and second ends. At least one end of the cross coupling element is in contact with a cross coupling tuning element that extends through an external wall of the housing so that it can be manipulated from outside of the housing to move the corresponding end of the cross coupling element relative to the adjacent resonator inside the housing without opening the housing.Type: ApplicationFiled: May 2, 2007Publication date: November 6, 2008Applicant: M/A-Com, Inc.Inventors: Charles Joseph Henault, Glen Brian Rochford
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Patent number: 7446693Abstract: An analog to digital converter that first converts an analog input voltage into first and second periodic signals having a phase difference there between that is a function of the analog input voltage and then introduces the first periodic signal into a forward direction data path through a series of consecutive delay cells so that the first periodic signal propagates through the cells via the first series of delay elements in a first direction, and introduces the second periodic signal into a reverse direction data path through the same series of delay cells so that the second periodic signal propagates through the cells via the second series of delay elements in an opposite direction, and using the second periodic signal to latch the first periodic signal in each cell so as to generate an output signal for each cell, said output signals of said cells collectively indicating the unique cell in which the leading edges of corresponding pulses in the first and second directions met, and decoding the outputs ofType: GrantFiled: May 18, 2007Date of Patent: November 4, 2008Assignee: M/A-Com, Inc.Inventor: Laurent Claude Perraud
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Patent number: 7439610Abstract: A high power shunt switch comprises a leadframe including a paddle for supporting a shunt element, and a plurality of bond pads located around a periphery of the paddle, wherein at least a first subset of the bond pads are aligned in a substantially straight-line configuration. A shunt element is fixedly attached to the paddle and wire bonded to a top surface of one the bond pads. An encapsulant is disposed on the paddle, the shunt element, the plurality of bond pads, and the wire bond, thereby forming an encapsulated package structure. The package structure is positioned and attached to a transmission line such that the bottom surfaces of each of the at least first subset of bond pads are in simultaneous contact with the transmission line. The package structure and the transmission line are fixedly attached to a suitable substrate.Type: GrantFiled: June 16, 2006Date of Patent: October 21, 2008Assignee: M/A-COM, Inc.Inventor: Christopher D. Weigand
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Patent number: 7436339Abstract: A system, apparatus, method and article to emulate a filter using digital elements are described. The apparatus may include a digital-to-analog converter having an impulse response emulator, the impulse response emulator to receive multiple digital signals each having a predetermined waveform, and convert a sequence of bits from each digital signal to a predetermined analog waveform corresponding to the sequence of bits using a lookup table or digital filter. Other embodiments are described and claimed.Type: GrantFiled: July 20, 2005Date of Patent: October 14, 2008Assignee: M/A-Com, Inc.Inventors: Walid Khairy Mohamed Ahmed, Anthony Dennis
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Publication number: 20080238793Abstract: A planar antenna comprising a signal path for receiving or transmitting a signal, a conductive layer having a slot formed therein positioned to electromagnetically couple with the signal path, a conductive plate parallel to and overlying the slot and spaced therefrom by a dielectric layer, the conductive plate being electrically in contact with the signal path, and one or more patches parallel to and above the conductive plate.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Applicant: M/A-Com, Inc.Inventor: Eswarappa Channabasappa
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Patent number: 7427949Abstract: A multi-element antenna with sufficiently small return loss and mutual coupling signals to allow the simultaneous transmission of powerful radar signals and the reception of faint target return signals. The microstrip patch antenna has radio frequency absorbing material place between neighboring antenna elements to reduce the mutual coupling leakage signals.Type: GrantFiled: December 5, 2005Date of Patent: September 23, 2008Assignee: M/A-COM, Inc.Inventors: Eswarappa Channabasappa, Robert Egri
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Patent number: 7420512Abstract: An antenna system for a radio frequency identification system comprising: (a) a base; (b) a first patch antenna disposed on the base and having a circular polarization and adapted to convert between electrical signals and electromagnetic fields; and (c) a second patch antenna disposed on the base and having a circular polarization and adapted to convert between electrical signals and electromagnetic fields, the second antenna being disposed at a distance from the first antenna to define a region between the first and the antenna, the second patch antenna being positioned relative to the first patch antenna such that the electromagnetic fields of the two antennas are substantially opposing in the region.Type: GrantFiled: August 2, 2005Date of Patent: September 2, 2008Assignee: M/A-COM, Inc.Inventors: Matthew Lannon, Clyde Callewaert
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Patent number: 7417513Abstract: A system and method for modulating a phase component of an electromagnetic signal includes a phase/frequency detector having first and second inputs and an output. The first phase/frequency detector input may be configured to receive a reference signal. The system may include an oscillator having an input and an output. The oscillator may be configured to generate a desired oscillator output signal at its output. A divider may be configured to receive the oscillator output signal. The divider may have a divider count input and a divider carryout output that may be connected to the second phase/frequency detector input. A loop filter may be connected in series between the phase/frequency detector output and the oscillator input. The loop filter has a transfer function including at least two frequency response rate change points, where each of the frequency rate change points corresponds to a pole or a zero in the transfer function.Type: GrantFiled: August 17, 2005Date of Patent: August 26, 2008Assignee: M/A-COM, Inc.Inventors: Walid Khairy Mohamed Ahmed, David Bengtson
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Patent number: 7411560Abstract: An apparatus includes a monopole extending substantially along an axis that may be vertical. However, the monopole may have a loop portion that deviates from the axis. Further, the apparatus includes multiple conductive elements, each having a substantially linear first segment that is coupled to the monopole. The first segments may be coplanar and/or perpendicular to the axis. Each of the conductive elements may further include a second segment that is substantially parallel to the axis. One or more of these segments may be connected to a ground potential. Also, the conductive elements may each include a third segment having a loop pattern.Type: GrantFiled: September 30, 2006Date of Patent: August 12, 2008Assignee: M/A-Com, Inc.Inventor: David Frederick Jordan
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Patent number: 7409295Abstract: A process of determining an imminent-collision between a vehicle and an object, said vehicle having a sensing system for obtaining one or more images representing at least one observed object within a field of detection, said process comprising: (a) obtaining one or more images representing an observed object within said field of detection; and (b) determining that a collision between said vehicle and said observed object is imminent when the ratio of the probability that said observed object is actually within a collision zone to the probability that said observed object is actually within a safe zone is greater than a certain value.Type: GrantFiled: August 9, 2004Date of Patent: August 5, 2008Assignee: M/A-Com, Inc.Inventor: Michael John Paradie
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Patent number: 7402842Abstract: A light emitting diode package and method of manufacturing the light emitting diode package are provided. The light emitting diode package includes a sub-mount portion and a frame portion extending from the sub-mount portion. The frame portion has angled walls and is configured to receive a light emitting diode therein.Type: GrantFiled: August 9, 2004Date of Patent: July 22, 2008Assignee: M/A-COM, Inc.Inventor: Joel Lee Goodrich
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Patent number: 7397390Abstract: A wireless traffic control system and method for wirelessly communicating information using traffic control signs are provided. The method includes wirelessly transmitting at least one of traffic control information and vehicle information from a traffic control sign and wirelessly receiving the information transmitted from the traffic control sign by at least one other traffic control sign.Type: GrantFiled: July 15, 2004Date of Patent: July 8, 2008Assignee: M/A-COM, Inc.Inventor: Gerald Charles DiPiazza
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Patent number: 7397381Abstract: A radio frequency locator system is provided that includes a plurality of locator elements configured to communicate using a radio frequency identification (RFID) communication system and at least one communication device configured to receive locator information from at least one of the plurality of locator elements. The radio frequency locator system further includes a user interface configured to display location information based on the received locator information and includes a plurality of user input fields configured to receive a user input to define a search criteria.Type: GrantFiled: November 1, 2005Date of Patent: July 8, 2008Assignee: M/A-COM, Inc.Inventor: Gerald Charles DiPiazza
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Publication number: 20080157896Abstract: The invention provides a novel broadband power limiter having improved frequency characteristics and power capacity, suitable for use with GaAs low-noise amplifier circuits. The power limiter includes a shunt diode circuit and two impedance transformers. The first transformer is a step-down impedance transformer connected between the shunt diode circuit and the input to the limiter, and the second transformer is a step-up impedance transformer connected between the shunt diode circuit and the output of the limiter. The invention further provides a method for limiting the power of an input signal, comprising the steps of: transforming the input signal from the input impedance to an intermediate impedance; shunting a portion of the input signal to ground; and transforming a remaining portion of the input signal from the intermediate impedance to an output impedance.Type: ApplicationFiled: December 29, 2006Publication date: July 3, 2008Applicant: M/A-COM, INC.Inventor: Inder Jit Bahl
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Publication number: 20080150094Abstract: A novel apparatus and method for providing a radio frequency (“RF”) input/output (“I/O”) land grid array (“LGA”) package structure. The package structure comprises grounded shield rings surrounding free-standing RF I/O interconnects. The free-standing RF I/O interconnects eliminate long leads and the shield rings provide ground protection thereby minimizing losses, inductance, leakage, and crosstalk, and improving performance.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Applicant: M/A-COM, Inc.Inventor: Richard A. Anderson
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Patent number: 7392021Abstract: Apparatus, system, and method including a circuit including an element having an electrical impedance, an input node to receive a signal, and an output node to couple to a load; a sensing circuit coupled to the input node and the output node to sense a differential voltage between the input and output nodes and to sense a detected voltage at the input node; and a multiplier circuit to receive the differential voltage and to receive the detected voltage. The multiplier circuit provides an output voltage proportional to the instantaneous power delivered to the load based on the differential voltage, the detected voltage, and the impedance of the element. A system may further include a radio frequency (RF) power amplifier (PA). A method may further include controlling a gain of the RF PA to maintain the power delivered to the load at a predetermined level based on the output voltage of the multiplier circuit.Type: GrantFiled: August 3, 2005Date of Patent: June 24, 2008Assignee: M/A-Com, Inc.Inventors: Nitin Jain, Rajanish, Angelos Alexanian
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Patent number: 7388457Abstract: In accordance with the principles of the present invention, a dielectric resonator is provided with a longitudinal through hole with a diameter that varies as a function of height of the resonator so as to increase the frequency spacing between the fundamental mode and the spurious modes.Type: GrantFiled: January 20, 2005Date of Patent: June 17, 2008Assignee: M/A-COM, Inc.Inventors: Kristi Dhimiter Pance, Eswarappa Channabasappa
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Patent number: 7387518Abstract: An attachment assembly and method for attachment are provided. The attachment assembly includes a base having a shaft extending therefrom and a non-conductive compression member having a plurality of slots and configured to engage the shaft. The attachment assembly further includes a locking component configured to engage the shaft. The locking component has a plurality of resilient extensions configured to engage the plurality of slots of the compression member. The locking component is configured to compress the compression member in a tightened state and wherein the resilient extensions form a conductive path when in the tightened state.Type: GrantFiled: December 23, 2005Date of Patent: June 17, 2008Assignee: M/A-COM, Inc.Inventor: Albert David Kozlovski
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Patent number: 7385454Abstract: A ferrite housing is provided that includes a body for receiving at least one ferrite element therein and a plurality of mounting portions extending from and forming part of the body.Type: GrantFiled: May 23, 2005Date of Patent: June 10, 2008Assignee: M/A-COM, Inc.Inventors: James Paul Kingston, Stanley Vincent Paquette