Short range wireless communication
First Claim
1. An apparatus comprising:
- a power supply circuit configured to receive, from an antenna, a first signal having a first frequency exceeding a GHz, and including a rectifier circuit that is impedance matched to the antenna at the first frequency and that is configured to generate a supply voltage by rectifying the first signal at the first frequency;
a signal generation circuit configured to use the supply voltage to generate a second signal having a second frequency that is higher than the first frequency and to operate in two different power modes in response to a data signal; and
a transmitter circuit that is configured to use the supply voltage to create pulses from the second signal and in response to the data signal, and that includes an amplifier circuit configured to receive the pulses and provide an amplification of the pulses to the antenna.
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Accused Products
Abstract
An apparatus can have a power supply circuit configured to receive, from an antenna, a first signal at a frequency exceeding a GHz, and including a rectifier circuit that is impedance matched to the antenna at the first frequency and that is configured to generate a supply voltage by rectifying the first signal at the first frequency. A signal generation circuit can be configured to use the supply voltage to generate a second signal at as higher frequency and to operate in two different power modes in response to a data signal. A transmitter circuit can be configured to use the supply voltage to create pulse at the higher frequency of the signal and in response to the data signal, and that includes an amplifier circuit configured to receive the data signal and provide an amplification of the data signal to the antenna.
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Citations
21 Claims
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1. An apparatus comprising:
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a power supply circuit configured to receive, from an antenna, a first signal having a first frequency exceeding a GHz, and including a rectifier circuit that is impedance matched to the antenna at the first frequency and that is configured to generate a supply voltage by rectifying the first signal at the first frequency; a signal generation circuit configured to use the supply voltage to generate a second signal having a second frequency that is higher than the first frequency and to operate in two different power modes in response to a data signal; and a transmitter circuit that is configured to use the supply voltage to create pulses from the second signal and in response to the data signal, and that includes an amplifier circuit configured to receive the pulses and provide an amplification of the pulses to the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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an encoding circuit configured to generate a data signal that has pulses occurring according to data and a first frequency; an oscillator circuit configured to enter, in response to the pulses, a first mode in which the oscillator circuit is configured to generate an output signal that oscillates at a second carrier frequency that is higher than the first frequency, and enter, in response to the pulses, a second mode in which the oscillator circuit is configured to reduce power consumption by disabling the generation of the output signal; and a power amplifier circuit configured to enter, in response to the pulses, a third mode in which the power amplifier circuit is configured to amplify the output signal and provide the output signal, as amplified, to an antenna, and enter, in response to the pulses, a fourth mode in which the power amplifier circuit is configured to reduce power consumption by disabling the amplification of the output signal. - View Dependent Claims (11, 12, 13, 14, 21)
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15. A semiconductor chip comprising:
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a semiconductor substrate; a first antenna on the semiconductor substrate; a second antenna on the semiconductor substrate and located at a distance from the first antenna; a multiple-input multiple-output transceiver circuit configured to use the first and second antenna to transmit data using signals having a wavelength that is more than twice the distance; and a conductive plate that is configured to improve gain of the first and second antennas for the signals having the wavelength. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification