Single- and dual-polarized millimeter-wave slot-ring antennas
Single- and dual-polarized millimeter-wave slot-ring antennas
复制标题
单极化和双极化毫米波槽环天线
DOI：
--
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Gabriel M. Rebeiz
中科院分区：
文献类型：
--
作者：
S. Raman;Gabriel M. Rebeiz
单极化和双极化介质透镜支撑的缝隙环天线已经被开发出来，用于工作在毫米波频率。天线采用共面波导(CPW)馈电，与单面混频器和低噪声放大器兼容，馈线对天线性能的影响很小。测得的天线方向图与理论结果吻合较好，具有对称的主波束、低副瓣电平(-15分贝)、低交叉极化(-20分贝)和27分贝的方向性。用于单脉冲应用的2/SPL倍/2单极化缝隙环天线阵列在94 GHz处显示了出色的方向图，在仰角和方位扫描中的交叉功率电平均为-3分贝。双极化缝隙环天线的方向图与单极化天线的方向图几乎相同，双端口隔离度低至-25分贝。介质透镜支撑的缝隙环形天线是具有固定或可变极化能力的紧凑、低成本毫米波系统的极佳候选者。
Single- and dual-polarized dielectric lens-supported slot-ring antennas have been developed for operation at millimeter-wave frequencies. The antennas are fed with a coplanar waveguide (CPW) to be compatible with uniplanar mixers and low-noise amplifiers, and the feedline is shown to have a minimal effect on the antenna performance. The measured antenna patterns agree well with theoretical results and have symmetric main beams, low sidelobe levels (<-15 dB), low cross polarization (<-20 dB), and 27 dB directivity. A 2/spl times/2 array of single-polarized slot-ring antennas for monopulse applications demonstrates excellent patterns at 94 GHz with -3 dB crossover power levels in both elevation and azimuth scans. The dual-polarized slot ring antenna patterns are nearly identical to those of the single-polarized antenna, and two-port isolation is as low as -25 dB. The dielectric lens-supported slot-ring antenna is an excellent candidate for compact, low-cost millimeter-wave systems with fixed or variable polarization capabilities.