The invention discloses a high-gain directional broadband antenna, which comprises a metal grounding plate, a radiation layer, a feed patch and an air dielectric layer, the radiation layer comprises a first radiation metal patch and a second radiation metal patch which are of an asymmetric structure; the feed patch is located between the first radiation metal patch and the second radiation metal patch. According to the antenna, the first radiation metal patch and the second radiation metal patch which are asymmetric are adopted, so that the resonant frequencies of the two patch antennas have a certain difference, the metal radiation antenna is connected with the metal grounding plate through a certain number of metal short-circuit columns, the radiation performance of the radiation antenna close to the middle feed patch is enhanced, and the radiation performance of the antenna is improved. The difference between the resonant frequencies of the two antennas is controlled by changing the position of the middle feed patch, and meanwhile, the effect of introducing a capacitor to improve the impedance characteristic of the antenna is achieved by introducing a gap between the feed patch and the radiation metal patch, so that the total bandwidth of the antenna is widened.
本发明公开一种高增益定向宽带天线,包括金属接地板、辐射层、馈电贴片、空气介质层;辐射层包括非对称结构的第一辐射金属贴片、第二辐射金属贴片;馈电贴片位于第一辐射金属贴片、第二辐射金属贴片间位置。本发明通过采用两个非对称的第一辐射金属贴片、第二辐射金属贴片,使两个贴片天线的谐振频率有一定差异,再通过一定数量的金属短路柱将金属辐射天线与金属接地板相连接,使靠近中间馈电贴片的辐射天线辐射性增强,通过改变中间馈电贴片的位置来控制两个天线谐振频率的差异,同时通过引入馈电贴片与辐射金属贴片之间的缝隙来达到引入电容改善天线的阻抗特性的效果,实现本发明天线的总带宽变宽。
High-gain directional broadband antenna
一种高增益定向宽带天线
2024-12-20
Patent
Electronic Resource
Chinese
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