Patents by Inventor Ulrich Rohde
Ulrich Rohde 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: 9923257Abstract: The present disclosure is directed to a balun circuit adapted to operate at a frequency of between about 5 GHz to about 110 GHz. The balun circuit includes first and second output striplines and an input stripline formed on a first surface of the substrate, and a slotline formed on a second surface of the substrate opposite the first surface. The slotline has first and second ends, the first end overlapping the first output stripline and the second end overlapping the second output stripline, and the input stripline overlapping the slotline midway between the first end and the second end.Type: GrantFiled: April 7, 2015Date of Patent: March 20, 2018Assignee: Synergy Microwave CorporationInventors: Ajay Kumar Poddar, Ulrich Rohde, Shiban K. Koul
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Publication number: 20150288344Abstract: The present disclosure is directed to a balun circuit adapted to operate at a frequency of between about 5 GHz to about 110 GHz. The balun circuit includes first and second output striplines and an input stripline formed on a first surface of the substrate, and a slotline formed on a second surface of the substrate opposite the first surface. The slotline has first and second ends, the first end overlapping the first output stripline and the second end overlapping the second output stripline, and the input stripline overlapping the slotline midway between the first end and the second end.Type: ApplicationFiled: April 7, 2015Publication date: October 8, 2015Applicant: Synergy Microwave CorporationInventors: Ajay Kumar Poddar, Ulrich Rohde, Shiban K. Koul
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Publication number: 20070120615Abstract: An oscillator comprising a three-terminal device and circuitry coupled across a first terminal and a second terminal of the device. The circuitry is preferably operable to bias the device and feedback a select amount of noise generated by the device into the device so as to reduce a proportional amount of phase noise present at a third terminal of the device.Type: ApplicationFiled: January 24, 2007Publication date: May 31, 2007Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar
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Publication number: 20070115073Abstract: A tunable oscillator includes a first transistor, a second transistor connected in parallel with the first transistor, a noise feedback and bias network coupled to the first and second transistors, a planar coupled resonator network coupled to the transistors and a means for dynamically tuning the resonant frequency of the planar coupled network and the junction capacitance of the transistors.Type: ApplicationFiled: November 2, 2006Publication date: May 24, 2007Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar, Klaus Schoepf, Parimal Patel
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Publication number: 20070109061Abstract: An aspect of the present invention is a voltage controlled oscillator that provides multi octave band tenability. The oscillator preferably includes one or more multi planar resonators which allow it to be implemented in integrated circuit form. Oscillators implemented in accordance with the aspect of the present invention provide as wide a tuning range as the YIG based resonators but are much more compact and efficient. Therefore, they are amenable to implementation in integrated circuits and suited for adaptation in third and future generation wireless devices.Type: ApplicationFiled: November 15, 2006Publication date: May 17, 2007Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar, Klaus Schoepf, Parimal Patel
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Publication number: 20060284695Abstract: An oscillator circuit configuration comprising in an LC-parallel oscillatory circuit and a transistor as an amplifying element. A compensating winding is associated with the parallel oscillatory circuit whereby the collector voltage of the transistor is fed to said winding in order to compensate the effect of the parasitic collector capacity. Preferably, the collector current from the transistor is maintained constant be an amplifier.Type: ApplicationFiled: July 21, 2006Publication date: December 21, 2006Inventors: Ulrich Rohde, Klaus Danzeisen
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Publication number: 20060279368Abstract: A voltage controlled oscillator compising a distributed coupled resonator (DCR) that desirably produces a low noise signal source with reduced phase hits in comparison to a high Q resonator, such as a ceramic and SAW (Surface Acoustic Wave) resonator based oscillator.Type: ApplicationFiled: May 19, 2006Publication date: December 14, 2006Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar, Klaus Schoepf, Reimund Rebel, Hua Zhang
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Publication number: 20060141976Abstract: In one aspect, a mixer that provides improved isolation between an input oscillator and a mixing cell. In another aspect, a mixer that includes circuitry operative to shape an input signal provided by a local oscillator.Type: ApplicationFiled: October 27, 2005Publication date: June 29, 2006Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Antonio Almeida, Ajay Poddar, Vaseem Ahmed, Nikolay IIkov, Klaus Schoepf
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Publication number: 20060033586Abstract: An oscillator comprising an active device having first, second and third terminals, a plurality of micro-stripline resonators coupled together to form a coupled-resonator network, the coupled-resonator network being coupled to the second terminal of the active device and a tuning network coupled to the coupled-resonator network, the tuning network being operable to adjust the coupling between at least two of the resonators that form the coupled resonator network.Type: ApplicationFiled: August 16, 2005Publication date: February 16, 2006Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar, Reimund Rebel, Parimal Patel, Klaus Schoepf
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Publication number: 20050280478Abstract: An oscillator comprising a cascode configured device having first, second and third terminals, a plurality of resonators and first circuitry coupled between the plurality of resonators and the second terminal of the cascode configured device. The first circuitry is preferably operable as an evanescent mode buffer to compensate for changes in the capacitance of the oscillator during operation.Type: ApplicationFiled: July 19, 2005Publication date: December 22, 2005Applicant: Synergy Microwave CorporationInventors: Parimal Patel, Klaus Schoepf, Daniel Badea, Ulrich Rohde, Ajay Poddar
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Publication number: 20050242896Abstract: In one aspect, the present invention includes a voltage controlled oscillator comprising an active device having a plurality of resonators coupled across two terminals of the device and at least one resonator coupled across the plurality of resonators. The at least one resonator preferably operates as an evanescent mode buffer capable of storing a select amount of energy present in the oscillator.Type: ApplicationFiled: April 21, 2005Publication date: November 3, 2005Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Reimund Rebel, Ajay Poddar
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Publication number: 20050156675Abstract: In one aspect, a voltage controlled oscillator is provided that includes circuitry comprising tunable coupled resonator networks, which are coupled to a terminal of a pair of three-terminal devices through a tuning voltage network which supports wide-band tunability. In another aspect, a wide-band tunable resonator is provided that is amenable to integration in the integrated circuit form.Type: ApplicationFiled: December 9, 2004Publication date: July 21, 2005Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Reimund Rebel, Ajay Poddar
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Publication number: 20050156683Abstract: A voltage controlled oscillator that includes a slot-cut-microstrip-line coupled between a resonator, a tuning diode network and an active device and being operable to act as a common-coupling capacitor between the resonator, the tuning diode network and the active device.Type: ApplicationFiled: December 9, 2004Publication date: July 21, 2005Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar, Parimal Patel
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Publication number: 20050084053Abstract: In one aspect, a voltage controlled oscillator is provided that includes circuitry comprising tunable coupled resonator networks, which are coupled to a terminal of a pair of three-terminal devices through a tuning voltage network which supports wide-band tunability. In another aspect, a wide-band tunable resonator is provided that is amenable to integration in the integrated circuit form.Type: ApplicationFiled: September 9, 2004Publication date: April 21, 2005Inventors: Ulrich Rohde, Ajay Poddar
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Publication number: 20050046500Abstract: An oscillator comprising a three-terminal device and circuitry coupled across a first terminal and a second terminal of the device. The circuitry is preferably operable to bias the device and feedback a select amount of noise generated by the device into the device so as to reduce a proportional amount of phase noise present at a third terminal of the device.Type: ApplicationFiled: August 5, 2004Publication date: March 3, 2005Applicant: Synergy Microwave CorporationInventors: Ulrich Rohde, Ajay Poddar