Geoffrey C Dawe from 5 Pheasant Run Dr, Plum Island, MA 01950, age 63, Phone: (978)4626419

Us Patents

Programmable Radio Transceiver
view source
US Patent:

7323945, Jan 29, 2008
Filed:

Feb 10, 2005
Appl. No.:

11/055585
Inventors:

Russell J. Cyr - Pepperell MA, US
Geoffrey C. Dawe - Newburyport MA, US
Assignee:

BitWave Semiconductor, Inc. - Lowell MA
International Classification:

H03L 7/00
US Classification:

331 16, 331 2, 331 40, 331 41, 331 50
Abstract:

A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC includes a tunable resonant circuit that includes a transmission line having an inductance, a plurality of switchable capacitors configured to be switched into and out of the tunable resonant circuit in response to a first control signal, and at least one variable capacitor that can be varied in response to a second control signal, wherein a center resonant frequency of the resonant circuit is electronically tunable responsive to the first and second control signals that control a first capacitance value of the plurality of switchable capacitors and a second capacitance value of the at least one variable capacitor.

Multi-Band Tunable Resonant Circuit
view source
US Patent:

7482887, Jan 27, 2009
Filed:

Feb 10, 2005
Appl. No.:

11/055556
Inventors:

Russell J. Cyr - Pepperell MA, US
Geoffrey C. Dawe - Newburyport MA, US
Assignee:

Bitwave Semiconductor, Inc. - Lowell MA
International Classification:

H03B 5/18
H03H 7/38
US Classification:

331108C, 331117 FE, 331117 D, 331177 V, 331179, 333 33
Abstract:

A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC includes a tunable resonant circuit that includes a transmission line having an inductance, a plurality of switchable capacitors configured to be switched into and out of the tunable resonant circuit in response to a first control signal, and at least one variable capacitor that can be varied in response to a second control signal, wherein a center resonant frequency of the resonant circuit is electronically tunable responsive to the first and second control signals that control a first capacitance value of the plurality of switchable capacitors and a second capacitance value of the at least one variable capacitor.

Programmable Radio Transceiver
view source
US Patent:

7508898, Mar 24, 2009
Filed:

Aug 11, 2005
Appl. No.:

11/202626
Inventors:

Russell J. Cyr - Pepperell MA, US
Geoffrey C. Dawe - Newburyport MA, US
Jose L. Bohorquez - Cambridge MA, US
Assignee:

BitWave Semiconductor, Inc. - Lowell MA
International Classification:

H03D 3/24
H04L 23/00
US Classification:

375376, 375375, 375377
Abstract:

A fully integrated, programmable mixed-signal transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC does not use spiral inductors and instead includes transmission line inductors allowing for improved scalability. Components of the transceiver are programmable to allow the transceiver to switch between different frequency bands of operating. Frequency switching can be accomplished though the content of digital registers coupled to the components.

Programmable Radio Transceiver
view source
US Patent:

7580684, Aug 25, 2009
Filed:

Feb 10, 2005
Appl. No.:

11/055589
Inventors:

Russell J. Cyr - Pepperell MA, US
Geoffrey C. Dawe - Newburyport MA, US
Assignee:

BitWave Semiconductor, Inc. - Lowell MA
International Classification:

H04B 1/40
US Classification:

455 75, 455 84, 455323, 455313, 375298, 375344
Abstract:

A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC includes a tunable resonant circuit that includes a transmission line having an inductance, a plurality of switchable capacitors configured to be switched into and out of the tunable resonant circuit in response to a first control signal, and at least one variable capacitor that can be varied in response to a second control signal, wherein a center resonant frequency of the resonant circuit is electronically tunable responsive to the first and second control signals that control a first capacitance value of the plurality of switchable capacitors and a second capacitance value of the at least one variable capacitor.

Reconfigurable Tunable Rf Power Amplifier
view source
US Patent:

7764125, Jul 27, 2010
Filed:

May 23, 2008
Appl. No.:

12/126030
Inventors:

Geoffrey C Dawe - Newburyport MA, US
Assignee:

BitWave Semiconductor, Inc. - Lowell MA
International Classification:

H03F 3/04
US Classification:

330305, 330302
Abstract:

A multi-band, multi-standard programmable power amplifier having tunable impedance matching input and output networks and programmable device characteristics. The impedance of either or both of the impedance matching input and output networks is tunable responsive to one or more control signals. In one example, the programmable power amplifier incorporates a feedback control loop and the control signal(s) are varied responsive to the feedback loop.

Reconfigurable Mixer With Gain Control
view source
US Patent:

7982527, Jul 19, 2011
Filed:

Jan 5, 2009
Appl. No.:

12/348606
Inventors:

Geoffrey C. Dawe - Newburyport MA, US
Krenar Komoni - Acton MA, US
Assignee:

BitWave Semiconductor, Inc. - Lowell MA
International Classification:

G06G 7/12
US Classification:

327355, 327350
Abstract:

A frequency mixer or modulator circuit that is reconfigurable through electronic programming among active and passive operation, and/or harmonic and sub-harmonic operation, and/or up-conversion and down-conversion, and/or no-overlap, off-overlap, and on-overlap mixing, and/or upper-sideband modulation and lower-sideband modulation. In one example, the frequency mixer or modulator circuit also includes automatic gain control.

Multi-Band Tunable Resonant Circuit
view source
US Patent:

20090079524, Mar 26, 2009
Filed:

Dec 3, 2008
Appl. No.:

12/327338
Inventors:

Russell J. Cyr - Pepperell MA, US
Geoffrey C. Dawe - Newburyport MA, US
Assignee:

BitWave Semiconductor, Inc. - Lowell MA
International Classification:

H03J 3/20
US Classification:

334 78
Abstract:

A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC includes a tunable resonant circuit that includes a transmission line having an inductance, a plurality of switchable capacitors configured to be switched into and out of the tunable resonant circuit in response to a first control signal, and at least one variable capacitor that can be varied in response to a second control signal, wherein a center resonant frequency of the resonant circuit is electronically tunable responsive to the first and second control signals that control a first capacitance value of the plurality of switchable capacitors and a second capacitance value of the at least one variable capacitor.

System And Method For A Mixer Circuit With Anti-Series Transistors
view source
US Patent:

6631257, Oct 7, 2003
Filed:

Apr 20, 2000
Appl. No.:

09/553974
Inventors:

William A. White - Garland TX
Geoffrey C. Dawe - Newburyport MA
Assignee:

Microtune (Texas), L.P. - Plano TX
International Classification:

H04B 128
US Classification:

455333, 455323, 327355, 327356, 327359
Abstract:

A system and method for a mixer circuit places the RF and mixer core LO transistors on the same level in anti-series. The mixer circuit provides increased headroom, excellent linearity, controllable conversion-gain, and operates with a reduced supply voltage requirement.