Why is GaN Chips So Important in Jammers?

The importance of GaN chips in jammers is reflected in the following aspects:

- High power capability: GaN has a wide bandgap of 3.4 eV and its breakdown field is 20 times higher than other RF semiconductor technologies. This enables GaN-based power amplifiers to handle high-voltage and high-current signals, resulting in high-power RF output. For example, in anti-RCIED equipment, high-power jamming signals are required to disrupt wireless trigger signals, and GaN chips can meet this requirement and effectively interfere with the normal operation of RCIED receivers. In addition, in anti-UAV jammers, high-power output is required to suppress the communication signals of drones within a certain range, and GaN chips can provide the necessary power.

- High frequency response: GaN chips have excellent high-frequency characteristics and can operate over a wide frequency range. Jammers usually need to cover multiple frequencies to deal with different types of target signals. For example, some jammers need to work in the 4000-8000MHz frequency band to interfere with drone signals. GaN-based amplifiers can achieve high gain and high-efficiency amplification in such a high frequency band, quickly adapt to changes in different signal frequencies and modulation methods, and achieve real-time interference.

- High efficiency: GaN chips have high electron mobility, which can reduce on-resistance and increase switching speed, thereby reducing power loss during operation, improving conversion efficiency and reducing heat generation. For example, in a 50-watt GaN chip-based jammer module, the efficiency can reach 45% or even higher. High efficiency not only helps save energy, but also enables the jammer to work stably for a long time, and reduces the requirements for the jammer power supply system and heat dissipation system, which is conducive to the miniaturization and portability of the equipment.

- Good thermal conductivity: GaN has good thermal conductivity, which is conducive to the dissipation of heat generated when the chip is working. During high-power operation, the heat generated by the chip can be quickly transferred to the outside through the heat dissipation structure, avoiding the problem of performance degradation or even damage of the chip due to overheating. For example, the ceramic tube shell used in the GaN chip-based jammer module can significantly improve the heat dissipation effect and ensure that the module works stably under harsh environmental conditions.

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- Strong anti-interference ability: GaN chips have strong anti-interference ability and can still maintain stable performance in complex electromagnetic environments. Jammers often need to work in an environment full of various interference signals. The excellent anti-interference ability of GaN chips can ensure that jammers can accurately generate interference signals and effectively interfere with target signals without being affected by other interference signals.