The Analysis of the Difference in Radiation Performance of M-Modification Glide Path Antenna and M-Type One
Equipment Operation Monitoring Center, CAAC, East China Regional Air Traffic Management Bureau of Civil Aviation of China, Shanghai 200335, China
| Abstract: | The M-modified glide path antenna has a similar structure to the M-typed one. Firstly, from the signal principle and feeding principle, the basic signal radiation characteristics of the M-modified glide path antenna would be theoretically analyzed, and then compared M-modified with the original M-typed one. Secondly, from the perspective of adjusting antenna parameters based on the flight checking procedure and sampling rules, the characteristics of changes in threshold crossing height (TCH), glide path angle, and symmetry are calculated by a three-dimensional electromagnetic model through the structure, as well as the feeding amplitude and phase of a ternary antenna, as well as the principle of spatial signal synthesis. The advantages of the two glide antennas are compared, which can serve as a reference for equipment selection during the initial installation stage. |
| Keywords: | Glide Path Antenna; Symmetry; Glide Path Angle |
| DOI: | 10.57237/j.cst.2025.04.003 |
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Received: 25 July 2025
Accepted: 28 October 2025
Published Online: 12 November 2025
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