Patents Assigned to CalAmp Wireless Networks Corporation
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Patent number: 11214231Abstract: A recovery system and method with repeating communication functionality includes a station configured to send a first message and at least a first remote transmitting unit responsive to the central station and configured to transmit a second message to a locating unit. At least a second remote transmitting unit includes a receiver which receives the second message, a controller configured to process the second message, and a transmitter for transmitting a third message to the locating unit.Type: GrantFiled: February 3, 2020Date of Patent: January 4, 2022Assignee: CalAmp Wireless Networks CorporationInventors: James A. Justice, George Liu, Ira Cohen
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Patent number: 10998618Abstract: Coaxial helix antennas in accordance with embodiments of the invention are disclosed. In one embodiment, a coaxial helix antenna includes an inner element having an inner element radius and an inner element length and an outer element having an outer element radius and an outer element length, wherein the outer element radius is greater than the inner element radius, wherein the inner element is driven by a first conductor, wherein the outer element is driven by a second conductor, and wherein the outer element is disposed outside of the inner element such that a portion of the inner element extends beyond the outer element and includes an inner radiating element.Type: GrantFiled: October 28, 2019Date of Patent: May 4, 2021Assignee: CalAmp Wireless Networks CorporationInventor: Orest Fedan
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Patent number: 10951328Abstract: Systems and methods for reducing undesirable behaviors in RF communications in accordance with embodiments of the invention are disclosed. In one embodiment, a vehicle telematics device includes a processor, a transceiver, an amplifier, and a memory connected to the processor and storing a transmission control application, wherein the transceiver is connected to the amplifier, the amplifier is connected to the processor, and the transmission control application directs the processor to format data to be transmitted by the transceiver, determine a leading bit-edge of the transceiver signal, direct the amplifier to sequentially amplify the transceiver signal, transmit data, and direct the amplifier to sequentially de-amplify the transceiver signal.Type: GrantFiled: October 28, 2019Date of Patent: March 16, 2021Assignee: CalAmp Wireless Networks CorporationInventor: Yvonne Whelan
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Publication number: 20210001804Abstract: A recovery system and method with repeating communication functionality includes a station configured to send a first message and at least a first remote transmitting unit responsive to the central station and configured to transmit a second message to a locating unit. At least a second remote transmitting unit includes a receiver which receives the second message, a controller configured to process the second message, and a transmitter for transmitting a third message to the locating unit.Type: ApplicationFiled: February 3, 2020Publication date: January 7, 2021Applicant: CalAmp Wireless Networks CorporationInventors: James A. Justice, George Liu, Ira Cohen
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Publication number: 20200168983Abstract: Coaxial helix antennas in accordance with embodiments of the invention are disclosed. In one embodiment, a coaxial helix antenna includes an inner element having an inner element radius and an inner element length and an outer element having an outer element radius and an outer element length, wherein the outer element radius is greater than the inner element radius, wherein the inner element is driven by a first conductor, wherein the outer element is driven by a second conductor, and wherein the outer element is disposed outside of the inner element such that a portion of the inner element extends beyond the outer element and includes an inner radiating element.Type: ApplicationFiled: October 28, 2019Publication date: May 28, 2020Applicant: CalAmp Wireless Networks CorporationInventor: Orest Fedan
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Patent number: 10549720Abstract: A recovery system and method with repeating communication functionality includes a station configured to send a first message and at least a first remote transmitting unit responsive to the central station and configured to transmit a second message to a locating unit. At least a second remote transmitting unit includes a receiver which receives the second message, a controller configured to process the second message, and a transmitter for transmitting a third message to the locating unit.Type: GrantFiled: May 13, 2019Date of Patent: February 4, 2020Assignee: CalAmp Wireless Networks CorporationInventors: James A. Justice, George Liu, Ira Cohen
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Patent number: 10461410Abstract: Coaxial helix antennas in accordance with embodiments of the invention are disclosed. In one embodiment, a coaxial helix antenna includes an inner element having an inner element radius and an inner element length and an outer element having an outer element radius and an outer element length, wherein the outer element radius is greater than the inner element radius, wherein the inner element is driven by a first conductor, wherein the outer element is driven by a second conductor, and wherein the outer element is disposed outside of the inner element such that a portion of the inner element extends beyond the outer element and includes an inner radiating element.Type: GrantFiled: February 1, 2017Date of Patent: October 29, 2019Assignee: CalAmp Wireless Networks CorporationInventor: Orest Fedan
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Patent number: 10461868Abstract: Systems and methods for reducing undesirable behaviors in RF communications in accordance with embodiments of the invention are disclosed. In one embodiment, a vehicle telematics device includes a processor, a transceiver, an amplifier, and a memory connected to the processor and storing a transmission control application, wherein the transceiver is connected to the amplifier, the amplifier is connected to the processor, and the transmission control application directs the processor to format data to be transmitted by the transceiver, determine a leading bit-edge of the transceiver signal, direct the amplifier to sequentially amplify the transceiver signal, transmit data, and direct the amplifier to sequentially de-amplify the transceiver signal.Type: GrantFiled: August 22, 2017Date of Patent: October 29, 2019Assignee: CalAmp Wireless Networks CorporationInventor: Yvonne Whelan
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Publication number: 20190263354Abstract: A recovery system and method with repeating communication functionality includes a station configured to send a first message and at least a first remote transmitting unit responsive to the central station and configured to transmit a second message to a locating unit. At least a second remote transmitting unit includes a receiver which receives the second message, a controller configured to process the second message, and a transmitter for transmitting a third message to the locating unit.Type: ApplicationFiled: May 13, 2019Publication date: August 29, 2019Applicant: CalAmp Wireless Networks CorporationInventors: James A. Justice, George Liu, Ira Cohen
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Patent number: 10367457Abstract: Single stage ramped power amplifiers in accordance with embodiments of the invention are disclosed. In one embodiment, a single stage ramped power amplifier includes a RF transceiver, a ramp voltage, a power supply, and an output circuit, wherein the ramp voltage is coupled to a resistor that is coupled to a first inductor, the power supply is coupled to a second inductor, the RF transceiver is coupled to the second inductor and a first capacitor, the first capacitor is coupled to a PIN diode, the PIN diode is coupled to the first inductor and a second capacitor, the second capacitor is coupled to a first transistor, the first transistor is coupled to a third capacitor, the third capacitor is coupled to a third inductor, the third inductor is coupled to a second transistor, and the second transistor is coupled to the output circuit.Type: GrantFiled: October 5, 2017Date of Patent: July 30, 2019Assignee: CalAmp Wireless Networks CorporationInventor: Orest Fedan