Based on this product's specifications, here are some alternatives and similar models
Antenna DeLOCK 88396
Summary description:
The DeLOCK 88396 network antenna offers a gain level of 5 dBi and operates within the frequency band of 2.4 GHz. With an impedance of 50 Ω, it is designed for optimal performance. The antenna has a compact depth of 12.5 mm and a height of 165 mm, making it suitable for various applications. Its frequency range extends from 0 to 6 GHz, ensuring versatility in connectivity.