Phased array antenna provided with a calibration network
First Claim
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1. A phased array antenna comprising:
- a two-dimensional array of waveguide radiators connected to a supply system; and
a calibration network configured to calibrate the antenna, and including a waveguide having a coupling device mounted to a side wall of each of a predetermined number of waveguide radiators of the array of waveguides radiators, said calibration network being arranged for leading a test signal to each of the predetermined number of waveguide radiators simultaneously,wherein said coupling device comprises a directional coupler having a main directivity in a direction of the supply system, anda widest side wall of the waveguide abuts on the widest side walls of the array of waveguide radiators.
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Abstract
A phased array antenna including a number of waveguide radiators in a power supply system. A calibration network provides a test pulse. By directly connecting the calibration network to the waveguide radiators, a more accurate calibration is obtained due to the processing of any phase and amplitude errors arising in the waveguide radiators in a calibration algorithm. The calibration network can be designed as a system of waveguides.
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Citations
8 Claims
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1. A phased array antenna comprising:
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a two-dimensional array of waveguide radiators connected to a supply system; and a calibration network configured to calibrate the antenna, and including a waveguide having a coupling device mounted to a side wall of each of a predetermined number of waveguide radiators of the array of waveguides radiators, said calibration network being arranged for leading a test signal to each of the predetermined number of waveguide radiators simultaneously, wherein said coupling device comprises a directional coupler having a main directivity in a direction of the supply system, and a widest side wall of the waveguide abuts on the widest side walls of the array of waveguide radiators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification