An ultra-narrowband navigation jamming antenna design method, antenna and application thereof

Abstract

The invention discloses a design method of an ultra-narrowband navigation jamming antenna, which belongs to the technical field of jamming antennas, and comprises the steps of: 1) estimating the size of a microstrip patch according to the material parameters of a dielectric substrate; 2) adopting a series feed form or a parallel feed form Combining multiple microstrip patches to form an array antenna; 3) using a microstrip patch width gradient method to control the excitation current of each microstrip patch, so that the current on each microstrip patch on the array antenna obeys the Chebyshev distribution; 4 ) Optimize the length of the feeder line connecting each microstrip patch to ensure that each microstrip patch is in phase to achieve the edge-fire characteristic; 5) Simulate and optimize the array antenna. The invention has the advantages of strong orientation ability, high energy density, small environmental impact and the like.

Description

technical field [0001] The invention mainly relates to the technical field of jamming antennas, and in particular relates to a design method of an ultra-narrowband navigation jamming antenna, an antenna and applications thereof. Background technique [0002] With the rapid iteration of UAV airborne communication systems, UAVs with self-made communication and non-cooperative inertial navigation systems will become the main threat of electronic tool warfare in the future. In the direction of rapid development, the traditional "UAV" jamming equipment to achieve electromagnetic suppression of the UAV uplink will cause a large area of ​​"blindness". Power navigation jamming equipment cannot achieve precise strikes, causing secondary damage to the environment and equipment, and has a serious impact on non-UAV inertial navigation system equipment. Therefore, the existing navigation interference antennas have the following deficiencies: [0003] 1. The existing navigation jamming ...

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Problems solved by technology

[0003] 1. Existing navigation jamming antennas usually use a single-antenna design. It can be known from antenna theory that the radiation beam width of a single antenna is wide and the gain is low, so that the radiation energy density is poor, resulting in poor directional jamming performance of the jammer. Antenna radiation side lobes are likely to interfere with the timing system of local communication base stations, resulting in the paralysis of the communication network;

[0004] 2. With multi-unit array interference, the gain will increase accordingly, but the front-to-back ratio has not improved significantly, and the feed network at the back end of the array will become more complicated, which will increase the complexity of the system, and the cost of the array will also be corresponding The higher the value, it is not conducive to product development and production;

[0005] 3. In the low-frequency navigation frequency band, the frequency band division is complicated, and the frequency domain bandwidth of the navigation interference antenna is wide, which may easily cause interference to navigation systems in different frequency bands in the controlled area. For example, the distance between the L1 frequency band of Beidou BD2 and the L1 frequency band of GPS is less than 13MHz

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