Patents by Inventor Maulin Pareshbhai Bhagat
Maulin Pareshbhai Bhagat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9312927Abstract: A tunable guard ring for improved circuit isolation is disclosed. In an exemplary embodiment, an apparatus includes a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit. The apparatus also includes a tunable capacitor forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductor to a second inductor.Type: GrantFiled: November 11, 2013Date of Patent: April 12, 2016Assignee: Qualcomm IncorporatedInventors: Maulin Pareshbhai Bhagat, Thomas Andrew Myers, Lan Nan, Zhang Jin
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Publication number: 20150130552Abstract: A tunable guard ring for improved circuit isolation is disclosed. In an exemplary embodiment, an apparatus includes a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit. The apparatus also includes a tunable capacitor forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductor to a second inductor.Type: ApplicationFiled: November 11, 2013Publication date: May 14, 2015Applicant: QUALCOMM IncorporatedInventors: Maulin Pareshbhai Bhagat, Thomas Andrew Myers, Lan Nan, Zhang Jin
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Patent number: 8331978Abstract: A wireless communication device includes a component operating in a single frequency mode. The component includes a first differential branch that includes first input nodes and first output nodes. The first output nodes are coupled to ground. A second differential branch includes second input nodes, second output nodes, and a first planar inductor coupling a first terminal and a second terminal to ground. A third differential branch includes third input nodes, third output nodes, and a second planar inductor. The second planar inductor is formed within the first planar inductor of the second differential branch and couples a third terminal and a fourth terminal to ground. The third and fourth terminals are electrically independent from the first planar inductor and the first and second terminals. The second and third differential branches form a dual inductor circuit.Type: GrantFiled: June 26, 2012Date of Patent: December 11, 2012Assignee: QUALCOMM IncorporatedInventors: Maulin Pareshbhai Bhagat, John Woolfrey, Jose Cabanillas
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Publication number: 20120264482Abstract: A wireless communication device includes a component operating in a single frequency mode. The component includes a first differential branch that includes first input nodes and first output nodes. The first output nodes are coupled to ground. A second differential branch includes second input nodes, second output nodes, and a first planar inductor coupling a first terminal and a second terminal to ground. A third differential branch includes third input nodes, third output nodes, and a second planar inductor. The second planar inductor is formed within the first planar inductor of the second differential branch and couples a third terminal and a fourth terminal to ground. The third and fourth terminals are electrically independent from the first planar inductor and the first and second terminals. The second and third differential branches form a dual inductor circuit.Type: ApplicationFiled: June 26, 2012Publication date: October 18, 2012Applicant: QUALCOMM INCORPORATEDInventors: Maulin Pareshbhai Bhagat, John Woolfrey, Jose Cabanillas
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Patent number: 8229385Abstract: This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands. The dual inductor circuit comprises an inductor-within-inductor design in which a small inductor is disposed within a large inductor. The two inductors may share a ground terminal, but are otherwise physically separated and independent from one another. Terminals of the inner inductor, for example, are not tapped from the outer inductor, which can reduce parasitic effects and electromagnetic interference relative to tapped inductor designs. The independence of the inductors also allows the different inductors to define different resonance frequencies, which is desirable.Type: GrantFiled: June 29, 2010Date of Patent: July 24, 2012Assignee: Qualcomm IncorporatedInventors: Maulin Pareshbhai Bhagat, John Woolfrey
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Patent number: 8219060Abstract: This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands or in a multi-differential branch low noise amplifier wherein each of the differential branches possess a different set of gain and linearity characteristics for a signal operating at the same frequency. The dual inductor circuit comprises an inductor-within-inductor design in which a small inductor is disposed within a large inductor. The two inductors may share a ground terminal, but are otherwise physically separated and independent from one another. Terminals of the inner inductor, for example, are not tapped from the outer inductor, which can reduce parasitic effects and electromagnetic interference relative to tapped inductor designs. The independence of the inductors also allows the different inductors to define different resonance frequencies or gain and linearity characteristics, which is desirable.Type: GrantFiled: October 26, 2010Date of Patent: July 10, 2012Assignee: Qualcomm IncorporatedInventors: Maulin Pareshbhai Bhagat, John Woolfrey, Jose Cabanillas
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Patent number: 8095082Abstract: A transmitter includes a transformer and a transformer tuning circuit. The transformer transforms a differential radio frequency (RF) signal to a single-ended RF signal. The transformer tuning circuit tunes the transformer to permit the transmitter to transmit the single-ended RF signal in a first frequency band (e.g., cellular frequency band) or a second frequency band (e.g., PCS frequency band).Type: GrantFiled: October 10, 2007Date of Patent: January 10, 2012Assignee: QUALCOMM, IncorporatedInventors: Junxiong Deng, Maulin Pareshbhai Bhagat, Gurkanwal Singh Sahota
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Publication number: 20110105072Abstract: This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands or in a multi-differential branch low noise amplifier wherein each of the differential branches possess a different set of gain and linearity characteristics for a signal operating at the same frequency. The dual inductor circuit comprises an inductor-within-inductor design in which a small inductor is disposed within a large inductor. The two inductors may share a ground terminal, but are otherwise physically separated and independent from one another. Terminals of the inner inductor, for example, are not tapped from the outer inductor, which can reduce parasitic effects and electromagnetic interference relative to tapped inductor designs. The independence of the inductors also allows the different inductors to define different resonance frequencies or gain and linearity characteristics, which is desirable.Type: ApplicationFiled: October 26, 2010Publication date: May 5, 2011Applicant: QUALCOMM IncorporatedInventors: Maulin Pareshbhai Bhagat, John Woolfrey, Jose Cabanillas
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Publication number: 20100265022Abstract: This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands. The dual inductor circuit comprises an inductor-within-inductor design in which a small inductor is disposed within a large inductor. The two inductors may share a ground terminal, but are otherwise physically separated and independent from one another. Terminals of the inner inductor, for example, are not tapped from the outer inductor, which can reduce parasitic effects and electromagnetic interference relative to tapped inductor designs. The independence of the inductors also allows the different inductors to define different resonance frequencies, which is desirable.Type: ApplicationFiled: June 29, 2010Publication date: October 21, 2010Applicant: QUALCOMM INCORPORATEDInventors: Maulin Pareshbhai Bhagat, John Woolfrey
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Patent number: 7761078Abstract: This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands. The dual inductor circuit comprises an inductor-within-inductor design in which a small inductor is disposed within a large inductor. The two inductors may share a ground terminal, but are otherwise physically separated and independent from one another. Terminals of the inner inductor, for example, are not tapped from the outer inductor, which can reduce parasitic effects and electromagnetic interference relative to tapped inductor designs. The independence of the inductors also allows the different inductors to define different resonance frequencies, which is desirable.Type: GrantFiled: February 15, 2007Date of Patent: July 20, 2010Assignee: QUALCOMM IncorporatedInventors: Maulin Pareshbhai Bhagat, John Woolfrey
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Publication number: 20090098831Abstract: A transmitter includes a transformer and a transformer tuning circuit. The transformer transforms a differential radio frequency (RF) signal to a single-ended RF signal. The transformer tuning circuit tunes the transformer to permit the transmitter to transmit the single-ended RF signal in a first frequency band (e.g., cellular frequency band) or a second frequency band (e.g., PCS frequency band).Type: ApplicationFiled: October 10, 2007Publication date: April 16, 2009Applicant: QUALCOMM INCORPORATEDInventors: Junxiong Deng, Maulin Pareshbhai Bhagat, Gurkanwal Singh Sahota
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Publication number: 20080024349Abstract: This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands. The dual inductor circuit comprises an inductor-within-inductor design in which a small inductor is disposed within a large inductor. The two inductors may share a ground terminal, but are otherwise physically separated and independent from one another. Terminals of the inner inductor, for example, are not tapped from the outer inductor, which can reduce parasitic effects and electromagnetic interference relative to tapped inductor designs. The independence of the inductors also allows the different inductors to define different resonance frequencies, which is desirable.Type: ApplicationFiled: February 15, 2007Publication date: January 31, 2008Inventors: Maulin Pareshbhai Bhagat, John Woolfrey