Patents by Inventor Berend Hendrik Essink
Berend Hendrik Essink 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: 11087102Abstract: A UHF RFID system is disclosed in which an RFID transponder or tag can be simultaneously powered and interrogated by multiple RFID transceivers. The architecture of the system is such that each transceiver generates its own carrier wave, with a frequency that might be equal to or different from the other units, and the interrogation data is distributed throughout a network of transceivers and modulated by each transceiver unit onto their own carrier waves. During an interrogation period, one or more of the transceivers will be configured as the master unit, generating and distributing the protocols commands. The other units can be configured as transmitters, receivers or transceivers. After each period the units may be given different roles. The proposed setup yields a system with the capability to power and interrogate RFID tags with multiple readers, without compromising the required modulation depth and protocol handling.Type: GrantFiled: October 4, 2018Date of Patent: August 10, 2021Assignee: N.V. NEDERLANDSCHE APPARATENFABRIEK NEDAPInventors: Paul Jasper Compaijen, Maarten Jacobus Johannes van Megen, Berend Hendrik Essink, Reinbrand Gerhard Jaakob Frans Ottokar Johanan van Lakwijk
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Publication number: 20190138770Abstract: A UHF RFID system is disclosed in which an RFID transponder or tag can be simultaneously powered and interrogated by multiple RFID transceivers. The architecture of the system is such that each transceiver generates its own carrier wave, with a frequency that might be equal to or different from the other units, and the interrogation data is distributed throughout a network of transceivers and modulated by each transceiver unit onto their own carrier waves. During an interrogation period, one or more of the transceivers will be configured as the master unit, generating and distributing the protocols commands. The other units can be configured as transmitters, receivers or transceivers. After each period the units may be given different roles. The proposed setup yields a system with the capability to power and interrogate RFID tags with multiple readers, without compromising the required modulation depth and protocol handling.Type: ApplicationFiled: October 4, 2018Publication date: May 9, 2019Applicant: N.V. Nederlandsche Apparatenfabriek NEDAPInventors: Paul Jasper Compaijen, Maarten Jacobus Johannes van Megen, Berend Hendrik Essink, Reinbrand Gerhard Jaakob Frans Ottokar Johanan van Lakwijk
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Patent number: 8666330Abstract: A triple winding balun is combined with multiple switch assemblies to implement an antenna switch that provides good isolation, low loss, and good linearity with only a minor increase to the overall chip footprint. The antenna switch also isolates the receiver from power surges, where the power surges may be due to electrostatic discharge, undesirable WiMAX/LTE signals, etc. An exemplary antenna switch comprises a triple winding balun, a first switch subassembly, and an optional second switch subassembly. During stand-by and transmit modes, the first and second switch subassemblies respectively isolate the receiver from transmitter output current and connect a positive voltage bias to the third winding to prevent negative voltage swings at the receiver. During the receive mode, the configuration of the first and second switch subassemblies flips to connect the receiver to the third winding of the balun and to isolate the receiver from power surges.Type: GrantFiled: March 11, 2011Date of Patent: March 4, 2014Assignee: ST-Ericsson SAInventors: Hendrik Visser, Berend Hendrik Essink
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Patent number: 8503964Abstract: A symmetrical, balanced, down-conversion mixer is achieved by the coordinated layout of a balanced Local Oscillator (LO) divider circuit and a balanced Radio Frequency (RF) mixer circuit, such that the LO divider is in the center and the RF mixer is arrayed symmetrically around the LO divider. In particular, the LO divider is partitioned into four portions (e.g., Ip, In, Qp, Qn), which are placed in respective quadrants, defined by orthogonal reference axes through the LO divider center. The RF mixer is similarly partitioned into four corresponding portions, which are placed around the LO divider portions in each quadrant. By integrating the LO divider and RF mixer in the layout of the symmetric, balanced, down-conversion mixer, greater component matching and control of current paths are possible, improving operational quality parameters such as IRR, IP2, and LO feedthrough.Type: GrantFiled: April 15, 2011Date of Patent: August 6, 2013Assignee: St-Ericsson SAInventors: Sjoerd Martijn Herder, Berend Hendrik Essink, Johannes Petrus Antonius Frambach
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Publication number: 20120081169Abstract: A symmetrical, balanced, down-conversion mixer is achieved by the coordinated layout of a balanced Local Oscillator (LO) divider circuit and a balanced Radio Frequency (RF) mixer circuit, such that the LO divider is in the center and the RF mixer is arrayed symmetrically around the LO divider. In particular, the LO divider is partitioned into four portions (e.g., Ip, In, Qp, Qn), which are placed in respective quadrants, defined by orthogonal reference axes through the LO divider center. The RF mixer is similarly partitioned into four corresponding portions, which are placed around the LO divider portions in each quadrant. By integrating the LO divider and RF mixer in the layout of the symmetric, balanced, down-conversion mixer, greater component matching and control of current paths are possible, improving operational quality parameters such as IRR, IP2, and LO feedthrough.Type: ApplicationFiled: April 15, 2011Publication date: April 5, 2012Inventors: Sjoerd Herder, Berend Hendrik Essink, Johannes Frambach
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Publication number: 20120083224Abstract: A triple winding balun is combined with multiple switch assemblies to implement an antenna switch that provides good isolation, low loss, and good linearity with only a minor increase to the overall chip footprint. The antenna switch also isolates the receiver from power surges, where the power surges may be due to electrostatic discharge, undesirable WiMAX/LTE signals, etc. An exemplary antenna switch comprises a triple winding balun, a first switch subassembly, and an optional second switch subassembly. During stand-by and transmit modes, the first and second switch subassemblies respectively isolate the receiver from transmitter output current and connect a positive voltage bias to the third winding to prevent negative voltage swings at the receiver. During the receive mode, the configuration of the first and second switch subassemblies flips to connect the receiver to the third winding of the balun and to isolate the receiver from power surges.Type: ApplicationFiled: March 11, 2011Publication date: April 5, 2012Inventors: Hendrik Visser, Berend Hendrik Essink
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Patent number: 6639477Abstract: An oscillator has a resonator which includes at least one capacitor and at least one inductor. The resonator supplies a first signal of a first frequency at an output of the resonator. A frequency multiplier or a frequency divider is connected, via an input thereof, to the resonator output. The frequency multiplier or frequency divider supplies a second signal of a second frequency at an output of the frequency multiplier or frequency divider. The second frequency is n times or 1/n times (n≧2 and integer) the first frequency. A tuned circuit is part of the resonator and forms a short circuit or an open connection for the second frequency.Type: GrantFiled: December 20, 2000Date of Patent: October 28, 2003Assignee: Telefonaktiebolaget LM EricssonInventors: Marcel Wilhelm R. M van Roosmalen, Berend Hendrik Essink, Christian Alexander Smit
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Patent number: 6346850Abstract: A polyphase filter (20; 100) is described having two filter channels (30I, 30Q; 101I, 101q) for processing an I-input signal (&phgr;I) and a Q-input signal (&phgr;Q) which is shifted over 90° with respect to the I-input signal (&phgr;I), respectively. The filter (20; 100) has at least two capacitive filter components (CI, CQ; CiI, CiQ) corresponding to each other in the two filter channels (30I, 30Q; 101I, 101Q), wherein the capacity values (C; Ci) of these two capacitive filter components (CI, CQ; CiI, CiQ) are substantially equal to each other. Said two capacitive filter components (CI, CQ; CiI, CiQ) are coupled to each other by means of two current source couplings (40QI, 40IQ; 106i) switched in anti-parallel, having substantially equal characteristic. Hereby, a displacement of the filter characteristic toward higher frequencies is achieved, over a distance &OHgr;c.Type: GrantFiled: December 21, 2000Date of Patent: February 12, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventor: Berend Hendrik Essink
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Publication number: 20010015680Abstract: An oscillator has a resonator which includes at least one capacitor and at least one inductor. The resonator supplies a first signal of a first frequency at an output of the resonator. A frequency multiplier or a frequency divider is connected, via an input thereof, to the resonator output. The frequency multiplier or frequency divider supplies a second signal of a second frequency at an output of the frequency multiplier or frequency divider. The second frequency is n times or 1/n times (n≧2 and integer) the first frequency. A tuned circuit is part of the resonator and forms a short circuit or an open connection for the second frequency.Type: ApplicationFiled: December 20, 2000Publication date: August 23, 2001Inventors: Marcel Wilhelm R.M van Roosmalen, Berend Hendrik Essink, Christian Alexander Smit
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Publication number: 20010013807Abstract: A polyphase filter (20; 100) is described, having two filter channels (30I, 30Q; 101I, 101Q) for processing an I-input signal (&phgr;I) and a Q-input signal (&phgr;Q) which is shifted over 90° with respect to the I-input signal (&phgr;I), respectively. The filter (20; 100) has at least two capacitive filter components (CI, CQ; CiI, CiQ) corresponding to each other in the two filter channels (30I, 30Q; 101I, 101Q), wherein the capacity values (C; Ci) of these two capacitive filter components (CI, CQ; CiI, CiQ) are substantially equal to each other. Said two capacitive filter components (CI, CQ; CiI, CiQ) are coupled to each other by means of two current source couplings (40QI, 40IQ; 106i) switched in anti-parallel, having substantially equal characteristic. Hereby, a displacement of the filter characteristic toward higher frequencies is achieved, over a distance &ohgr;C.Type: ApplicationFiled: December 21, 2000Publication date: August 16, 2001Inventor: Berend Hendrik Essink