Basic principles and structural analysis of directional dual-polarized electrically tunable antennas
- Date： 2025-09-25
Basic principles and structural analysis of directional dual-polarized electrically tunable antennas
- Date：2025-09-25
The directional dual-polarized electrically tunable antenna achieves single-antenna transmit-receive (TR) duplex functionality by integrating ±45° orthogonal polarization units. Its core structure includes radiating elements (such as crossed dipoles or microstrip patches), a feed network (to achieve polarization orthogonality), and an electrically tunable phase shifter (supporting 0.1° precision down tilt adjustment). Taking GSM base stations as an example, traditional three-sector systems require six antennas, whereas dual-polarized antennas only need three, and the antenna spacing can be shortened to 20-30cm, significantly saving space in base stations. Its electrical parameters cover the 2300-2700MHz frequency band, with a 2×15dBi gain and ≥30dB isolation. The mechanical parameters include an operating temperature range of -40~60℃ and a pole diameter of 35-50mm, making it suitable for harsh outdoor environments.
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