Based on this product's specifications, here are some alternatives and similar models
Antenna OEM JCG401 2dBi Straight Compact Mobile - JCG401-STR
Summary description:
Compact straight mobile antenna OEM JCG401 with 2 dBi gain (model JCG401-STR). Designed for mobile and portable devices, it provides improved signal reception and transmission in cellular and RF applications. Its small form factor suits installations where space is limited, offering straightforward mounting and stable performance for everyday mobile connectivity.