公开(公告)号：US20200328821A1

公开(公告)日：2020-10-15

申请号：US16908240

申请日：2020-06-22

Applicant: Chirp Microsystems, Inc.

Inventor： Richard Przybyla ,  Mitchell Kline ,  David Horsley

IPC: H04B11/00 ,  H04L27/36 ,  G06F8/65 ,  H04L9/30

Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.

公开(公告)号：US20200266798A1

公开(公告)日：2020-08-20

申请号：US16794099

申请日：2020-02-18

Applicant: Chirp Microsystems, Inc.

Inventor： Stefon Shelton ,  Andre Guedes ,  Richard Przybyla ,  Meng-Hsiung Kiang ,  David Horsley

IPC: H03H9/17 ,  H01L41/187 ,  H04R17/00 ,  H01L41/09 ,  H03H9/02 ,  B06B1/06

Abstract: A transducer includes first and second piezoelectric layers made of corresponding different first and second piezoelectric materials and three or more electrodes, implemented in two or more conductive electrode layers. The first piezoelectric layer is sandwiched between a first pair of electrodes and the second piezoelectric layer is sandwiched between a second pair of electrodes. The first and second pairs of electrodes contain no more than one electrode that is common to both pairs.

公开(公告)号：US10700792B2

公开(公告)日：2020-06-30

申请号：US15920300

申请日：2018-03-13

Applicant: Chirp Microsystems, Inc.

Inventor： Richard Przybyla ,  Mitchell Kline ,  David Horsley

IPC: H04L29/00 ,  H04B11/00 ,  B06B1/02 ,  G01S7/523 ,  G06F8/65 ,  H04L9/08 ,  H04L9/30 ,  H04L29/08 ,  H04W12/02 ,  H04L27/34 ,  H04W88/02

Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.

公开(公告)号：US20170236506A1

公开(公告)日：2017-08-17

申请号：US15583861

申请日：2017-05-01

Applicant: Chirp Microsystems, Inc.

Inventor： Richard Przybyla ,  Andre Guedes ,  Stefon Shelton ,  Meng-Hsiung Kiang ,  David Horsley

IPC: G10K11/00 ,  G01S15/10 ,  G01S7/521 ,  G10K11/34

CPC classification number: G10K11/002 ,  G01S7/521 ,  G01S15/10 ,  G10K11/346 ,  H04R3/04 ,  H04R17/00 ,  H04R29/002 ,  H04R29/005 ,  H04R2201/003 ,  H04R2217/03

Abstract: A system and method use an array of ultrasonic transducers to emit and receive sound in a phased array fashion by using acoustic waveguides to achieve a desired acoustic radiation and reception pattern. A chip package attached to an acoustic transducer array includes acoustic waveguides coupled to acoustic ports. Each waveguide is coupled between a corresponding acoustic transducer and a corresponding acoustic port. A spacing of a pair of acoustic ports is different than a spacing of a corresponding pair of acoustic transducers.

公开(公告)号：US11005025B1

公开(公告)日：2021-05-11

申请号：US15625421

申请日：2017-06-16

Applicant: Chirp Microsystems, Inc.

Inventor： David Horsley ,  Andre Guedes ,  Stefon Shelton ,  Richard Przybyla ,  Meng-Hsiung Kiang

IPC: H01L41/04 ,  H01L41/047 ,  H01L41/053 ,  H01L41/18 ,  H01L41/31 ,  H01L41/253 ,  H01L41/29 ,  B06B1/06

Abstract: A piezoelectric micromachined ultrasonic transducer (pMUT) device may include a piezoelectric membrane transducer designed to have lower sensitivity to residual stress and reduced sensitivity to geometric variations arising from the backside etching process used to release the membrane. These designs allow some of its key feature to be adjusted to achieve desired characteristics, such as pressure sensitivity, natural frequency, stress sensitivity, and bandwidth.

公开(公告)号：US10944320B2

公开(公告)日：2021-03-09

申请号：US15958415

申请日：2018-04-20

Applicant: Chirp Microsystems, Inc.

Inventor： Mitchell Kline ,  Richard Przybyla ,  David Horsley

IPC: H02M1/00 ,  H02M3/07 ,  H02M7/483 ,  B06B1/02 ,  H02M1/08 ,  H02M1/36

Abstract: An ultrasound transducer may be driven by a driver circuit having one or more charge pumps and a multi-level inverter. The one or more charge pumps are configured to drive the ultrasound transducer only during output transitions of the inverter.

公开(公告)号：US20190089468A1

公开(公告)日：2019-03-21

申请号：US15920300

申请日：2018-03-13

Applicant: Chirp Microsystems, Inc.

Inventor： Richard Przybyla ,  Mitchell Kline ,  David Horsley

IPC: H04B11/00 ,  H04L9/30 ,  H04L9/08 ,  G06F8/65 ,  H04L29/08

Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.

公开(公告)号：US20180246193A1

公开(公告)日：2018-08-30

申请号：US15958363

申请日：2018-04-20

Applicant: Chirp Microsystems, Inc.

Inventor： Mitchell Kline ,  Richard Przybyla ,  David Horsley

IPC: G01S7/524 ,  B06B1/02 ,  G01S7/526 ,  G01S15/10 ,  G01S7/521 ,  G01S15/32

CPC classification number: G01S7/524 ,  B06B1/0215 ,  G01S7/521 ,  G01S7/526 ,  G01S15/102 ,  G01S15/325

Abstract: An ultrasonic transmitter system includes a digital controller, bandpass pulse-width modulator (BP-PWM) unit, a digital to analog converter (DAC), and an ultrasound transducer. The controller generates pulse width and phase reference signals. The BP-PWM configured receives these signals generates a pulse width modulation (PWM) output characterized by a pulse width and a phase based on the pulse width and phase reference signals. The DAC) receives the PWM output from the BP-PWM unit and generates an output characterized by the pulse width and phase. The ultrasonic transducer receives the output from the DAC and generates an output sound pressure in response to the output from the DAC. An amplitude of the RMS sound pressure depends on the pulse width of the output from the DAC.

公开(公告)号：US20180248477A1

公开(公告)日：2018-08-30

申请号：US15958415

申请日：2018-04-20

Applicant: Chirp Microsystems, Inc.

Inventor： Mitchell Kline ,  Richard Przybyla ,  David Horsley

IPC: H02M3/07 ,  B06B1/02 ,  H02M7/483 ,  H02M1/36

CPC classification number: H02M3/07 ,  B06B1/0207 ,  H02M1/08 ,  H02M1/36 ,  H02M7/483 ,  H02M2001/0048 ,  H02M2001/007 ,  Y02B70/1491

Abstract: An ultrasound transducer may be driven by a driver circuit having one or more charge pumps and a multi-level inverter. The one or more charge pumps are configured to drive the ultrasound transducer only during output transitions of the inverter.

公开(公告)号：US20170194934A1

公开(公告)日：2017-07-06

申请号：US15342719

申请日：2016-11-03

Applicant: Chirp Microsystems, Inc.

Inventor： Stefon Shelton ,  Andre Guedes ,  Richard Przybyla ,  Meng-Hsiung Kiang ,  David Horsley

IPC: H03H9/17 ,  B06B1/06 ,  H03H9/02

Abstract: A transducer includes first and second piezoelectric layers made of corresponding different first and second piezoelectric materials and three or more electrodes, implemented in two or more conductive electrode layers. The first piezoelectric layer is sandwiched between a first pair of electrodes and the second piezoelectric layer is sandwiched between a second pair of electrodes. The first and second pairs of electrodes contain no more than one electrode that is common to both pairs.