Frequency conversion beam squint correction method of active phase array antenna system
AssigneeRFcore Co., Ltd.
InventorsKye-Ik Jeon, Tong-Ook Kong
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Abstract
A frequency conversion beam squint correction method of an active phase array antenna system including a plurality (m) of beamforming units configured of an antenna, a first amplifier, a phase shifter, a variable attenuator, and a second amplifier, the method includes the steps of: adjusting a delay time of an applied RF signal by arranging m/2 true time delays (TTDs) for every two adjacent beamforming units; and converting the frequency of the RF signal by mixing the RF signal transferred to each of the m/2 true time delays and a local oscillation signal using a mixer.
Claims4
A frequency conversion beam squint correction method of an active phase array antenna system including a plurality (m) of beamforming units, each beamforming usit configured of an antenna, a first amplifier, a phase shifter, a variable attenuator, and a second amplifier, the method comprising the steps of:
- adjusting a delay time of an applied radio frequency (RF) signal by arranging m/2 true time delays (TTDs) for every two adjacent beamforming units;
- and
- converting an operating frequency signal out of the m/2 true time delays into an RF signal using a local signal and a mixer.
A frequency conversion beam squint correction method of an active phase array antenna system including a plurality (n) of beamforming units, each beamforming unit configured of an antenna, a first amplifier, a phase shifter, a variable attenuator, and a second amplifier, the method comprising the steps of:
- adjusting a delay time of an applied radio frequency (RF) signal by arranging n/2 first true time delays (TTDs) for every two adjacent beamforming units;
- adjusting a delay time of an applied RF signal by arranging n/4 second true time delays (TTDs) for every two adjacent first true time delays (TTDs);
- and
- converting an operating frequency signal out of the n/2 first true time delays and out of the n/4 second true time delays into an RF signal using a local signal and a mixer.
A frequency conversion beam squint correction method of an active phase array antenna system including a plurality (p) of beamforming units, each beamforming unit configured of an antenna, a first amplifier, a phase shifter, a variable attenuator, and a second amplifier, the method comprising the steps of:
- adjusting a delay time of an applied radio frequency (RF) signal by arranging p/x true time delays (TTDs) for every x adjacent beamforming units;
- and
- converting an operating frequency signal out of the p/x true time delays into an RF signal using a local signal and a mixer.
A frequency conversion beam squint correction method of an active phase array antenna system including a plurality (q) of beamforming units, each beamforming unit configured of an antenna, a first amplifier, a phase shifter, a variable attenuator, and a second amplifier, the method comprising the steps of:
- adjusting a delay time of an applied radio frequency (RF) signal by arranging q/w first true time delays (TTDs) for every w adjacent beamforming units;
- adjusting a delay time of an applied RF signal by arranging q/(w*y) second true time delays (TTDs) for every y adjacent first true time delays (TTDs);
- and
- converting an operating frequency signal out of the q/w first true time delays and out of the q/(w*y) second true time delays into an RF signal using a local signal and a mixer.
Dependencies are inferred from the claim text.