A periodic microstrip leaky wave antenna (MLWA) constructed of non-uniform aspect ratios microstrip patch periods is presented in this communication. Effective equations and simulations for the relevant antennas are used to obtain the propagation constants of the proposed antenna and design it. However, due to the presence of an open stop-band (OSB) in the broadside direction, double-side parallel-strip lines are then introduced in the antenna design. Truncating and interlacing the unit cells are developed to make them become impedance matched structures with the elimination of the OSB and the improvement of the radiation patterns. As a result, a new antenna configuration is created, and a prototype of the antenna is fabricated and measured. Continuous main beam scanning is observed from back-firing to end-firing with the operating frequency band of 4.8-18 GHz. Excellent agreements between the predicted and measured results are obtained. The measured peak gain of the prototype is 14 dBi, and the gain exceeds 6 dBi over the frequency band.

中文翻译：

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基于梯形DSPSL的背向射束至端射束扫描能力的周期性高宽比不均匀的周期性MLWA

在此通信中介绍了由非均匀纵横比微带贴片周期构成的周期性微带泄漏波天线（MLWA）。使用相关天线的有效方程和仿真来获得所建议天线的传播常数并进行设计。但是，由于在宽边方向上存在开放的阻带（OSB），因此在天线设计中引入了双面平行带状线。通过省去OSB和改善辐射模式，开发了截断和交错的单位单元，使其成为阻抗匹配的结构。结果，创建了新的天线配置，并且制造并测量了天线的原型。在4.8-18 GHz的工作频带上，从回火到终火连续观察到主光束扫描。获得了预期结果与测量结果之间的出色一致性。原型的测得峰值增益为14 dBi，并且在整个频带上增益超过6 dBi。