Abstract: In accordance with an embodiment, a method of operating a radar system includes receiving radar configuration data from a host, and receiving a start command from the host after receiving the radar configuration data. The radar configuration data includes chirp parameters and frame sequence settings. After receiving the start command, configuring a frequency generation circuit is configured with the chirp parameters and radar frames are triggered at a preselected rate.

Abstract: In an embodiment, a method includes: receiving a global trigger with a first millimeter-wave radar; receiving the global trigger with a second millimeter-wave radar; generating a first internal trigger of the first millimeter-wave radar after a first offset duration from the global trigger; generating a second internal trigger of the second millimeter-wave radar after a second offset duration from the global trigger; start transmitting first millimeter-wave radar signals with the first millimeter-wave radar based on the first internal trigger; and start transmitting second millimeter-wave radar signals with the second millimeter-wave radar based on the second internal trigger, where the second offset duration is different from the first offset duration, and where the first and second millimeter-wave radar signals are transmitted sequentially so as to exhibit no temporal overlap.

Abstract: In an embodiment, a method includes: receiving a global trigger with a first millimeter-wave radar; receiving the global trigger with a second millimeter-wave radar; generating a first internal trigger of the first millimeter-wave radar after a first offset duration from the global trigger; generating a second internal trigger of the second millimeter-wave radar after a second offset duration from the global trigger; start transmitting first millimeter-wave radar signals with the first millimeter-wave radar based on the first internal trigger; and start transmitting second millimeter-wave radar signals with the second millimeter-wave radar based on the second internal trigger, where the second offset duration is different from the first offset duration, and where the first and second millimeter-wave radar signals are transmitted sequentially so as to exhibit no temporal overlap.

Abstract: In an embodiment, a method for testing a millimeter-wave radar module includes: providing power to the millimeter-wave radar module; performing a plurality of tests indicative of a performance level of the millimeter-wave radar module; comparing respective results from the plurality of tests with corresponding test limits; and generating a flag when a result from a test of the plurality of test is outside the corresponding test limits, where performing the plurality of tests includes: transmitting a signal with a transmitting antenna coupled to a millimeter-wave radar sensor, modulating the transmitted signal with a test signal, and capturing first data from a first receiving antenna using an analog-to-digital converter of the millimeter-wave radar sensor, where generating the flag includes generating the flag based on the captured first data.

Abstract: In an embodiment, a method for testing a millimeter-wave radar module includes: providing power to the millimeter-wave radar module; performing a plurality of tests indicative of a performance level of the millimeter-wave radar module; comparing respective results from the plurality of tests with corresponding test limits; and generating a flag when a result from a test of the plurality of test is outside the corresponding test limits, where performing the plurality of tests includes: transmitting a signal with a transmitting antenna coupled to a millimeter-wave radar sensor, modulating the transmitted signal with a test signal, and capturing first data from a first receiving antenna using an analog-to-digital converter of the millimeter-wave radar sensor, where generating the flag includes generating the flag based on the captured first data.

Abstract: A test assembly for testing an antenna-in-package (AiP) device includes a socket over a circuit board, where the socket includes an opening for receiving the AiP device; a plunger configured to move along sidewalls of the opening, where during testing of the AiP device, the plunger is configured to cause the AiP device to be pressed towards the circuit board such that the AiP device is operatively coupled to the circuit board via input/output connections of the AiP device and of the circuit board; and a loadboard disposed within the socket and between the plunger and the AiP device, where the loadboard includes a coupling structure configured to be electromagnetically coupled to a transmit antenna and to a receive antenna of the AiP device, so that testing signals transmitted by the transmit antenna are conveyed to the receive antenna externally relative to the AiP device through the coupling structure.

Abstract: In accordance with an embodiment, an apparatus includes a millimeter wave radar sensor system configured to detect a location of a body of a person, where the detected location of the body of the person defines a direction of the person relative to the apparatus; and a microphone system configured to generate at least one audio beam as a function at least of the direction.

Abstract: In an embodiment, a method for testing a millimeter-wave radar module includes: providing power to the millimeter-wave radar module; performing a plurality of tests indicative of a performance level of the millimeter-wave radar module; comparing respective results from the plurality of tests with corresponding test limits; and generating a flag when a result from a test of the plurality of test is outside the corresponding test limits, where performing the plurality of tests includes: transmitting a signal with a transmitting antenna coupled to a millimeter-wave radar sensor, modulating the transmitted signal with a test signal, and capturing first data from a first receiving antenna using an analog-to-digital converter of the millimeter-wave radar sensor, where generating the flag includes generating the flag based on the captured first data.

Abstract: In accordance with an embodiment, a method includes: receiving, by an adjustable frequency doubling circuit, a first clock signal having a first clock frequency; using the adjustable frequency doubling circuit, generating a second clock signal having a second clock frequency that is twice the first clock frequency; measuring a duty cycle parameter of the second clock signal, where the duty cycle parameter is dependent on a duty cycle of the first clock signal or a duty cycle of the second clock signal; and using the adjustable frequency doubling circuit, adjusting the duty cycle of the first clock signal or the second clock signal based on the measuring.

Abstract: In an embodiment, a method for writing to a set of serial peripheral interface (SPI) slaves coupled to an SPI bus includes: disabling master in slave out (MISO) drivers of the set of SPI slaves using the SPI bus; after disabling the MISO drivers, setting respective slave selection terminals of the set of SPI slaves to an active state; and after setting the respective slave selection terminals of the set of SPI slaves to the active state, simultaneously writing data to the set of SPI slaves using a master out slave in (MOSI) line.

Abstract: A test assembly for testing an antenna-in-package (AiP) device includes a socket over a circuit board, where the socket includes an opening for receiving the AiP device; a plunger configured to move along sidewalls of the opening, where during testing of the AiP device, the plunger is configured to cause the AiP device to be pressed towards the circuit board such that the AiP device is operatively coupled to the circuit board via input/output connections of the AiP device and of the circuit board; and a loadboard disposed within the socket and between the plunger and the AiP device, where the loadboard includes a coupling structure configured to be electromagnetically coupled to a transmit antenna and to a receive antenna of the AiP device, so that testing signals transmitted by the transmit antenna are conveyed to the receive antenna externally relative to the AiP device through the coupling structure.

Abstract: A test assembly for testing an antenna-in-package (AiP) device includes a socket over a circuit board, where the socket includes an opening for receiving the AiP device; a plunger configured to move along sidewalls of the opening, where during testing of the AiP device, the plunger is configured to cause the AiP device to be pressed towards the circuit board such that the AiP device is operatively coupled to the circuit board via input/output connections of the AiP device and of the circuit board; and a loadboard disposed within the socket and between the plunger and the AiP device, where the loadboard includes a coupling structure configured to be electromagnetically coupled to a transmit antenna and to a receive antenna of the AiP device, so that testing signals transmitted by the transmit antenna are conveyed to the receive antenna externally relative to the AiP device through the coupling structure.

Abstract: In an embodiment, a method includes: receiving a global trigger with a first millimeter-wave radar; receiving the global trigger with a second millimeter-wave radar; generating a first internal trigger of the first millimeter-wave radar after a first offset duration from the global trigger; generating a second internal trigger of the second millimeter-wave radar after a second offset duration from the global trigger; start transmitting first millimeter-wave radar signals with the first millimeter-wave radar based on the first internal trigger; and start transmitting second millimeter-wave radar signals with the second millimeter-wave radar based on the second internal trigger, where the second offset duration is different from the first offset duration, and where the first and second millimeter-wave radar signals are transmitted sequentially so as to exhibit no temporal overlap.

Abstract: In an embodiment, a method for writing to a set of serial peripheral interface (SPI) slaves coupled to an SPI bus includes: disabling master in slave out (MISO) drivers of the set of SPI slaves using the SPI bus; after disabling the MISO drivers, setting respective slave selection terminals of the set of SPI slaves to an active state; and after setting the respective slave selection terminals of the set of SPI slaves to the active state, simultaneously writing data to the set of SPI slaves using a master out slave in (MOSI) line.

Abstract: In accordance with an embodiment, a method includes: receiving, by an adjustable frequency doubling circuit, a first clock signal having a first clock frequency; using the adjustable frequency doubling circuit, generating a second clock signal having a second clock frequency that is twice the first clock frequency; measuring a duty cycle parameter of the second clock signal, where the duty cycle parameter is dependent on a duty cycle of the first clock signal or a duty cycle of the second clock signal; and using the adjustable frequency doubling circuit, adjusting the duty cycle of the first clock signal or the second clock signal based on the measuring.

Abstract: A test assembly for testing an antenna-in-package (AiP) device includes a socket over a circuit board, where the socket includes an opening for receiving the AiP device; a plunger configured to move along sidewalls of the opening, where during testing of the AiP device, the plunger is configured to cause the AiP device to be pressed towards the circuit board such that the AiP device is operatively coupled to the circuit board via input/output connections of the AiP device and of the circuit board; and a loadboard disposed within the socket and between the plunger and the AiP device, where the loadboard includes a coupling structure configured to be electromagnetically coupled to a transmit antenna and to a receive antenna of the AiP device, so that testing signals transmitted by the transmit antenna are conveyed to the receive antenna externally relative to the AiP device through the coupling structure.

Abstract: In accordance with an embodiment, a method includes: receiving, by an adjustable frequency doubling circuit, a first clock signal having a first clock frequency; using the adjustable frequency doubling circuit, generating a second clock signal having a second clock frequency that is twice the first clock frequency; measuring a duty cycle parameter of the second clock signal, where the duty cycle parameter is dependent on a duty cycle of the first clock signal or a duty cycle of the second clock signal; and using the adjustable frequency doubling circuit, adjusting the duty cycle of the first clock signal or the second clock signal based on the measuring.

Abstract: In accordance with an embodiment, a method of operating a radar system includes receiving radar configuration data from a host, and receiving a start command from the host after receiving the radar configuration data. The radar configuration data includes chirp parameters and frame sequence settings. After receiving the start command, configuring a frequency generation circuit is configured with the chirp parameters and radar frames are triggered at a preselected rate.

Abstract: In accordance with an embodiment, a method of operating a radar system includes receiving radar configuration data from a host, and receiving a start command from the host after receiving the radar configuration data. The radar configuration data includes chirp parameters and frame sequence settings. After receiving the start command, configuring a frequency generation circuit is configured with the chirp parameters and radar frames are triggered at a preselected rate.

Abstract: In accordance with an embodiment, an apparatus includes a millimeter wave radar sensor system configured to detect a location of a body of a person, where the detected location of the body of the person defines a direction of the person relative to the apparatus; and a microphone system configured to generate at least one audio beam as a function at least of the direction.