LOW LOSS TRANSMITTER RECEIVER SWITCH WITH TRANSFORMER MATCHING NETWORK

    公开(公告)号:US20210044318A1

    公开(公告)日:2021-02-11

    申请号:US16931462

    申请日:2020-07-17

    Abstract: A transmit receive switch (TRSW) system is disclosed. The system has a transmission line, a transformer based matching network, a shunt switch, an amplifier and circuitry. The transmission line is connected to an antenna port. The transformer based matching network is connected to the transmission line and has a first coil and a second coil, wherein the second coil is connected to the transmission line. The amplifier can be configured as a shunt switch when inactive. The shunt switch, including the amplifier configured as the shunt switch, can be connected to the first coil of the transformer based matching network. The circuitry is configured to cause the shunt switch to be ON during an inactive mode and create a short across the first coil. Combined, the length of transmission line needed to complete the impedance transformation is reduced, thereby lowering the overall insertion loss of the transmit/receive switch.

    IMPEDANCE MATCHING CIRCUIT AND AN IMPEDANCE MATCHING ELEMENT

    公开(公告)号:US20220416751A1

    公开(公告)日:2022-12-29

    申请号:US17356530

    申请日:2021-06-24

    Abstract: Impedance matching circuits, impedance matching elements, and radio communication circuits are provided in this disclosure. The impedance matching circuit may include a first impedance matching element which is configured to radio communication circuit may include a modulator configured to receive an unbalanced input signal from a first input, and couple the unbalanced input signal to a first output to match an impedance of the first output to a first impedance. It may further include a second impedance matching element coupled to the first input to receive the unbalanced input signal, the second impedance matching element configured to couple the unbalanced input signal to a second output to match an impedance of the second output to a second impedance. A terminal of the first output and a terminal of the second output may be coupled to provide a balanced output signal, and the coupling may match an output impedance of the impedance matching circuit based on the first impedance and the second impedance.

    RADIO COMMUNICATION CIRCUIT WITH RADIO FREQUENCY QUADRATURE GENERATION

    公开(公告)号:US20220407544A1

    公开(公告)日:2022-12-22

    申请号:US17353840

    申请日:2021-06-22

    Abstract: Radio communication circuits, radio transmitters, and methods are provided in this disclosure. The radio communication circuit may include a modulator configured to provide a first modulated signal including a carrier signal at a carrier frequency, and a second modulated signal including the carrier signal at the carrier frequency. The radio communication circuit may further include a phase shift generator configured to receive a first signal based on the first modulated signal and a second signal based on the second modulated signal. The phase shift generator of the radio communication circuit may further be configured to provide a predefined phase difference between the first signal and the second signal.

    HIGH END IMAGING RADAR
    6.
    发明申请

    公开(公告)号:US20220196821A1

    公开(公告)日:2022-06-23

    申请号:US17369994

    申请日:2021-07-08

    Abstract: A radar device may include a digital to analog converter (DAC) stage. The DAC stage may generate a plurality of analog signals. The DAC stage may generate a different analog signal for each transmitter chain of a plurality of transmitter chains. Each analog signal of the plurality of analog signals may represent a single digital signal. Each transmitter chain of the plurality of transmitter chains may include a transmit chain portion and switched analog beamforming network (BFN). The transmit chain portion may generate a plurality of intermediate analog signals representative of the corresponding analog signal. The switched analog BFN may generate a plurality of analog transmit signals for an intermediate analog signal of the plurality of intermediate analog signals. The plurality of analog transmit signals may include a beam formed in accordance with a state of the switched analog BFN.

Patent Agency Ranking