Analysis of a calibration method for airborne receive-only phased array antennas with self-alignment

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furkanbahadirelik_thesis.pdf

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2022-9-15

Author

Elik, Furkan Bahadır

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The calibration of the phased array antennas plays crucial role to ensure the performance of the beam steering capability. Most of the guided missiles utilize phased arrays, thus, the calibration routines should be optimized. Since guided missiles are spatially limited, calibration hardware should not introduce new geometry to the antenna. This limits possible calibration methods of the antennas on the missiles. This study develops a calibration method for semi-active guided missiles and analyzes this method in terms of performance and feasibility in the simulation environment. In order to find the most suitable method, the mutual coupling and the peripheral fixed probes methods are discussed thoroughly and combined to develop a hybrid method to achieve self-calibration capability without any additional geometry to the antenna. First, an 8×4 phased array antenna is designed at 10 GHz center frequency with 200MHz bandwidth as the simulation environment. Later, reference antennas are assigned concerning the proposed method. For the error modeling, an RMS error with peak phase error of 40 degrees is introduced to each phase shifter in the array. To align phases, the remapping of the phase states is implemented as the algorithm.

Subject Keywords

Phased Array Antenna, Antenna Calibration, Self-alignment, Mutual Coupling, Peripheral Fixed Probes

URI

https://hdl.handle.net/11511/99725

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

F. B. Elik, “Analysis of a calibration method for airborne receive-only phased array antennas with self-alignment,” M.S. - Master of Science, Middle East Technical University, 2022.