【作者】 刘能武； 祝雷； 蔡伟华；

【Author】 Liu Neng-Wu;Zhu Lei;Choi Wai-Wa;Faculty of science and technology in the university of Macau;

【机构】 澳门大学科技学院；

【摘要】 本文对差分贴片天线的TM₁₀和TM₁₂模进行了深入研究。首先,利用短路销钉加载技术将TM₁₀模的谐振频点往高频移动。其次,利用缝隙加载技术将TM₁₂模的谐振频点往低频移动。然后,利用辐射边展宽技术进一步降低了TM₁₂模的谐振频点,从而使两辐射模相互靠近形成宽带特性。最后,对此宽带差分天线进行加工和测试。测试结果表明天线具有宽频带（10%）、稳定的法向辐射、低剖面（0.039λ₀）等特性。更多还原

【Abstract】 In this paper, the TM₁₀ and TM₁₂ modes of a differential-fed patch antenna are deeply investigated. Initially, the resonant frequency of TM₁₀ mode(f₁₀) is gradually pushed up by inserting the shorting pins. Then, the resonant frequency of TM12 mode(f₁₂) is decreased by cutting the narrow slots. After that, the f₁₂ is further reduced by widening the radiating patch. As a result, the dual modes are moved in proximity to each other. Finally, the differential-fed antenna is fabricated and tested. The results illustrate that a wide impedance bandwidth of about 10% is realized for the antenna, while maintaining a stable radiation pattern with low profile property（0.039 λ₀）.更多还原