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公开(公告)号：US20230018212A1
公开(公告)日：2023-01-19
申请号：US17838159
申请日：2022-06-10
IPC分类号： H03K5/00 , H03F3/20 , G01S13/931
摘要： In an embodiment a circuit includes frequency multiplier circuitry having input nodes configured to receive an input signal and an anti-phase version thereof, the input signal having a first frequency value, wherein the frequency multiplier circuitry is configured to produce a current signal at a second frequency value that is an even multiple of the first frequency value and a transformer including a primary side and a secondary side, wherein the primary side comprises a primary inductance coupled to the frequency multiplier circuitry to receive the current signal therefrom, wherein the secondary side is configured to provide a frequency multiplied voltage signal, and wherein the frequency multiplier circuitry and the transformer are cascaded between at least one first node and a second node, the at least one first node and the second node couplable to a supply node and ground.
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公开(公告)号：US11442142B2
公开(公告)日：2022-09-13
申请号：US16795977
申请日：2020-02-20
发明人： Giuseppe Papotto , Egidio Ragonese , Claudio Nocera , Alessandro Finocchiaro , Giuseppe Palmisano
摘要： An input receives a radio frequency (RF) signal having an interfering component superimposed thereon. The RF signal is mixed with a local oscillator (LO) signal and down-converted to an intermediate frequency (IF) to generate a mixed signal which includes a frequency down-converted interfering component. The mixed signal is amplified by an amplifier to generate an output signal. A feedback loop processes the output signal to generate a correction signal for cancelling the frequency down-converted interfering component at the input of the amplifier. The feedback loop includes a low-pass filter and a amplification circuit which outputs the correction signal.
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3.发明授权System for the correction of the phase error of two in-phase and quadrature signals, corresponding device and method 有权用于校正两个同相和正交信号的相位误差的系统，相应的装置和方法公开(公告)号：US09479208B2
公开(公告)日：2016-10-25
申请号：US14751470
申请日：2015-06-26
CPC分类号： H04B1/16 , H03F3/24 , H03K5/1565 , H04L27/364 , H04W56/0035 , H04W56/005
摘要： A system for correction of the phase error in in-phase and quadrature signals may include a first signal and a second signal. The system includes a first circuit and a second circuit, each circuit configured for receiving a square-wave input signal and supplying a respective square-wave output signal. The output signal is delayed with respect to the input signal and each circuit is configured in such a way that the propagation delay of a rising edge and the propagation delay of a falling edge between the input signal and the output signal are configurable. The first circuit is configured for receiving the first signal, and the second circuit is configured for receiving the second signal.
摘要翻译： 用于校正同相和正交信号中的相位误差的系统可以包括第一信号和第二信号。 该系统包括第一电路和第二电路，每个电路被配置为接收方波输入信号并提供相应的方波输出信号。 输出信号相对于输入信号被延迟，并且每个电路被配置成使得输入信号和输出信号之间的上升沿的传播延迟和下降沿的传播延迟是可配置的。 第一电路被配置为接收第一信号，并且第二电路被配置为接收第二信号。
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公开(公告)号：US11604267B2
公开(公告)日：2023-03-14
申请号：US17395016
申请日：2021-08-05
发明人： Alessandro Parisi , Andrea Cavarra , Alessandro Finocchiaro , Giuseppe Papotto , Giuseppe Palmisano
摘要： An oscillator includes a tunable resonant circuit having an inductance and a variable capacitance coupled between first and second nodes, and a set of capacitances selectively coupleable between the first and second nodes. An input control node receiving an input control signal is coupled to the variable capacitance and set of capacitances. The tunable resonant circuit is tunable based on the input control signal. A biasing circuit biases the tunable resonant circuit to generate a variable-frequency output signal between the first and second nodes. A voltage divider generates a set of different voltage thresholds, and a set of comparator circuits with hysteresis compares the input control signal to the set of different voltage thresholds to generate a set of control signals. The capacitances in the set of capacitances are selectively coupleable between the first and second nodes as a function of control signals in the set of control signals.
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