Patents Assigned to M/A-COM, Eurotec, B.V.
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Patent number: 7526260Abstract: Apparatus, method and article of manufacture are shown for linear signal modification. An input signal is modified by providing one or more non-linear current sources and regulating at least one of the one or more current sources to output a signal based on one or more of the input signal characteristics. The modification of the output signal includes both amplification and attenuation.Type: GrantFiled: November 14, 2002Date of Patent: April 28, 2009Assignees: M/A-Com Eurotec, B.V., M/A-Com, Inc.Inventors: Finbarr Joseph McGrath, Pierce Joseph Nagle
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Patent number: 7440729Abstract: Apparatus, methods and articles of manufacture for output impedance matching in multi-band power amplification are provided, wherein an output matching configuration comprising one or more output matching sections, a multi-band diplexer and a switch are connected to an active device.Type: GrantFiled: April 16, 2004Date of Patent: October 21, 2008Assignee: M/A-Com Eurotec B.V.Inventors: Piotr Solski, Andrei Grebennikov, Eugene Heaney
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Patent number: 7426372Abstract: An apparatus and method for amplifying a radio frequency signal including, generating a plurality of shaped pulses utilizing a piecewise linearizer circuit, applying the plurality of shaped pulses to a first input of a radio frequency amplifier circuit, and injecting a radio frequency carrier into a second input of the radio frequency amplifier circuit. The apparatus comprises a piecewise linearizer (PWL) circuit coupled to the input of a Radio Frequency Digital to Analog Converter (RFDAC) operating as a signal amplifier.Type: GrantFiled: March 31, 2005Date of Patent: September 16, 2008Assignee: M/A-COM Eurotec B.V.Inventor: Gerard T. Quilligan
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Patent number: 7259639Abstract: Inductor topologies for filters used in broadband applications are described. In one implementation, an apparatus, such as an interface module includes a printed circuit board and a filter. The filter includes a generally circular high Quality factor (Q) value spiral planar inductor etched directly into the printed circuit board. The generally circular high Q value spiral planar inductor is configured to operate in a broadband application. Other implementations involve the use of decoupling structures with respect to the planar inductors as well as a design methodology for the filters.Type: GrantFiled: March 28, 2003Date of Patent: August 21, 2007Assignee: M/A-Com Eurotec, B.V.Inventors: Deirdre Anne DeBhailis, Bill Allen Keeney, Piotr Miroslaw Solski
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Patent number: 7203262Abstract: A phase locked loop includes a buffer that synchronizes the transmission of the new count value to the completion of the previous count to avoid errors caused by dithering. The buffer is connected to a count input of the counter and transmits the new count upon receipt of the carryout signal from the counter. Alternatively, the transmission of the new value of N from the buffer is delayed after receipt by the buffer of a carryout signal from the counter. In another embodiment, a delayed version of the carryout signal is used to trigger the buffer to transmit the new count value to the counter. In another feature, a buffer synchronizes phase data to a reference signal before inputting it to a digital modulator of the phase locked loop.Type: GrantFiled: May 13, 2003Date of Patent: April 10, 2007Assignees: M/A-Com, Inc., M/A-Com, Eurotec, B.V.Inventors: Carol Moy, Christine DiVincenzo, Eoin Carey, Herbert Jaeger, Robert Servilio
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Patent number: 7190290Abstract: An apparatus and method for biasing at least one transistor of a Radio Frequency Digital to Analog Converter (RFDAC). The apparatus including a direct base current injection circuit for injecting a DC current waveform directly into a base terminal of the transistor.Type: GrantFiled: August 24, 2004Date of Patent: March 13, 2007Assignee: M/A-Com, Eurotec B.V.Inventors: Eoin Carey, Bernie Mullins
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Patent number: 7187231Abstract: Apparatus, methods and articles of manufacture for multiband transmitter power amplification are provided wherein one or more amplifying devices, of which at least one may be one or more current sources, have impedances matched for different input and output frequencies by way of various impedance matching circuits.Type: GrantFiled: December 2, 2002Date of Patent: March 6, 2007Assignees: M/A-COM, Inc., M/A-COM Eurotec, B.V.Inventors: Finbarr J. McGrath, Eugene Heaney, Pierce J. Nagle, Andrei V. Grebennikov
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Patent number: 7183958Abstract: An apparatus and method for amplifying a radiofrequency signal using a main Digital to Analog Converter (RFDAC) and a subordinate Digital to Analog Converter (Sub-DAC). The main RFDAC provides a first portion of a N-bit digital output, which specifies the amplification level of the radiofrequency signal, and the sub-DAC provides a second portion of the N-bit digital word. Together, the main RFDAC and the Sub-DAC convert a complete N-bit digital word, where N specifies the resolution of the output radiofrequency signal.Type: GrantFiled: September 8, 2004Date of Patent: February 27, 2007Assignee: M/A-Com, Eurotec B.V.Inventors: Gerard T. Quilligan, Pierce J. Nagle, Eugene P. Heaney
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Patent number: 7126443Abstract: Increasing performance of planar inductors used in broadband applications is described. In one implementation, an apparatus includes a high Quality factor (Q) value spiral planar inductor etched directly into a printed circuit board. A ferrite structure is attached to the printed circuit board and located in proximity to the high Q value spiral planar inductor. The ferrite structure increases the Q of spiral planar inductors, but without the inconvenience and expense of a wire wound terroidal inductors. Various shaped ferrite structures may be used in conjuction with the spiral planar inductors. Additionally, in certain implementations, the ferrite structures are configured to rotate about axis permitting the inductors to be tuned, even after components have been installed on a printed circuit board.Type: GrantFiled: June 6, 2003Date of Patent: October 24, 2006Assignee: M/A-COM, Eurotec, B.V.Inventors: Diedre Anne De Bhailis, Bill Allen Keeney
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Publication number: 20060055573Abstract: An apparatus and method for biasing at least one transistor of a Radio Frequency Digital to Analog Converter (RFDAC). The apparatus including a direct base current injection circuit for injecting a DC current waveform directly into a base terminal of the transistor.Type: ApplicationFiled: August 24, 2004Publication date: March 16, 2006Applicant: M/A-COM, Eurotec B.V.Inventors: Eoin Carey, Bernie Mullins
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Publication number: 20050233764Abstract: Apparatus, methods and articles of manufacture for output impedance matching in multi-band power amplification are provided, wherein an output matching configuration comprising one or more output matching sections, a multi-band diplexer and a switch are connected to an active device.Type: ApplicationFiled: April 16, 2004Publication date: October 20, 2005Applicant: M/A-COM Eurotec, B.V.Inventors: Piotr Solski, Andrei Grebennikov, Eugene Heaney
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Publication number: 20050225396Abstract: An apparatus and method for biasing a power amplifier circuit operating as a Digital to Analog Converter (DAC) are described. The bias circuit comprises a first transistor with a reference voltage coupled to its base terminal, a second transistor coupled to the emitter terminal of the first transistor at its collector terminal, and a third transistor with its base terminal coupled to the first and second transistors, and to an input signal.Type: ApplicationFiled: April 8, 2004Publication date: October 13, 2005Applicant: M/A-COM, EUROTEC B.V.Inventors: Andrei Grebennikov, Eugene Heaney
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Publication number: 20040189422Abstract: Increasing performance of planar inductors used in broadband applications is described. In one implementation, an apparatus includes a high Quality factor (Q) value spiral planar inductor etched directly into a printed circuit board. A ferrite structure is attached to the printed circuit board and located in proximity to the high Q value spiral planar inductor. The ferrite structure increases the Q of spiral planar inductors, but without the inconvenience and expense of a wire wound terroidal inductors. Various shaped ferrite structures may be used in conjuction with the spiral planar inductors. Additionally, in certain implementations, the ferrite structures are configured to rotate about axis permitting the inductors to be tuned, even after components have been installed on a printed circuit board.Type: ApplicationFiled: June 6, 2003Publication date: September 30, 2004Applicant: M/A COM, EUROTEC, B.V.Inventors: Deirdre Anne De Bhailis, Bill Allen Keeney
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Publication number: 20040027212Abstract: Inductor topologies for filters used in broadband applications are described. In one implementation, an apparatus, such as an interface module includes a printed circuit board and a filter. The filter includes a generally circular high Quality factor (Q) value spiral planar inductor etched directly into the printed circuit board. The generally circular high Q value spiral planar inductor is configured to operate in a broadband application. Other implementations involve the use of decoupling structures with respect to the planar inductors as well as a design methodology for the filters.Type: ApplicationFiled: March 28, 2003Publication date: February 12, 2004Applicant: M/A COM, EUROTEC, B.V.Inventors: Deirdre Anne DeBhailis, Bill Allen Keeney, Piotr Miroslaw Solski