Radio-frequency circuit for phased array antenna
AssigneeTron Future Tech Inc.
InventorsChien Cheng Wang, Li Han Chang, Yu-Jiu Wang, Ta-Shun Chu
Life of this patent
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Abstract
A wireless communication system includes a plurality of antennas, and a plurality of RF chips, arranged in a row and coupled to the antennas, for providing a plurality radio-frequency (RF) output signals to the antennas according to an RF signal. The wireless communication system also includes a transmission line arranged to be a straight line in parallel to the row, and to connect to the RF chips, and a resistive load, coupled to a first end of the transmission line. A second end of the transmission line is arranged to receive the RF signal.
Claims20
A wireless communication system, comprising:
- a plurality of antennas;
- a plurality of RF chips, arranged in a row and coupled to the antennas, for providing a plurality of radio-frequency (RF) output signals to the antennas according to an RF signal;
- a transmission line, arranged to be a straight line in parallel to the row, and to connect to the RF chips;
- and
- a resistive load, coupled to a first end of the transmission line,
- wherein a second end of the transmission line is arranged to receive the RF signal,
- wherein each of the RF chips comprises a transistor having a gate terminal serving as an input terminal connected to the transmission line,
- wherein a first impedance looking into the gate terminal of a corresponding RF chip is ten times greater than a second impedance looking into the transmission line from a corresponding input terminal connected to the transmission line.
A wireless communication system, comprising:
- a plurality of antennas;
- a plurality of RF chips, arranged in a row and coupled to the antennas, for receiving a plurality of radio-frequency (RF) signals from the antennas to output a plurality of RF output signals;
- a transmission line, arranged to be a straight line in parallel to the row, and to connect to the RF chips for receiving the RF output signals;
- and
- a resistive load, coupled to a first end of the transmission line,
- wherein a second end of the transmission line is arranged to output an accumulated RF output signal of the RF output signals,
- wherein each of the RF chips comprises a transistor having a drain terminal connected to the transmission line through an output terminal of each of the RF chips,
- wherein a first impedance looking into the drain terminal of a corresponding RF chip is ten times greater than a second impedance looking into the transmission line from a corresponding output terminal connected to the transmission line.
Dependencies are inferred from the claim text.