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Low-Cost Electrical Beam-Scanning Leaky-Wave Antenna Based on Bent Corrugated Substrate Integrated Waveguide

机译:基于弯曲波纹基板集成波导的低成本电波束扫描漏波天线

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摘要

This letter presents a novel low-cost leaky-wave antenna (LWA) with the fixed-frequency beam-scanning capability. An improved half-mode corrugated substrate integrated waveguide structure is proposed as the guiding wave structure to reduce the transverse size of the antenna. A novel electronic phase-shifting structure, composed of fan-shaped open stubs with different sizes and PIN diodes, is proposed for beam scanning. This LWA uses interdigital slots as radiating elements, and the phase-shifting structure is placed between the adjacent radiating elements. By changing the switching states of these PIN diodes, the phase difference between the adjacent radiating elements can be controlled. To verify the concept, one prototype of the 2 x 6 array antenna at C-band is designed, simulated, fabricated, and measured. The antenna demonstrates a beam-scanning range of 25 degrees (34 degrees-59 degrees) at fixed frequency, a peak gain of 12.4 dBi with the gain variation less than 2.3 dB. The antenna has low cost and can be easily fabricated using standard printed circuit board process.
机译:这封信提出了一种具有固定频率波束扫描功能的新型低成本漏波天线(LWA)。提出了一种改进的半模波纹基板集成波导结构作为导波结构,以减小天线的横向尺寸。提出了一种新颖的电子相移结构,该结构由具有不同尺寸的扇形开口桩和PIN二极管组成,用于电子束扫描。该LWA使用叉指槽作为辐射元件,并且相移结构放置在相邻的辐射元件之间。通过改变这些PIN二极管的开关状态,可以控制相邻辐射元件之间的相位差。为了验证这一概念,设计,模拟,制造和测量了一个C波段2 x 6阵列天线的原型。该天线在固定频率下的波束扫描范围为25度(34度至59度),峰值增益为12.4 dBi,增益变化小于2.3 dB。该天线成本低廉,可以使用标准印刷电路板工艺轻松制造。

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