Low-loss beam synthesizing network based on Epsilon-near-zero (ENZ) medium for on-chip antenna array

被引:11
|
作者
Li, Hao [1 ]
Zhou, Ziheng [2 ]
Zhao, Yongzhi [3 ]
Li, Yue [1 ,4 ]
机构
[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
[2] Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350108, Peoples R China
[3] Hebei Semicond Res Inst, Shijiazhuang 050000, Peoples R China
[4] Beijing Natl Res Ctr Informat Sci & Technol, Beijing 100084, Peoples R China
来源
CHIP | 2023年 / 2卷 / 02期
基金
中国国家自然科学基金;
关键词
Millimeter wave antenna array; On-chip antenna; Beam synthesis; Epsilon-near-zero medium; WIDE-BAND; MICROMACHINING TECHNOLOGY; LOW-PROFILE; BROAD-BAND; WAVE;
D O I
10.1016/j.chip.2023.100049
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Beam synthesizing antenna arrays are essentially demanded for onchip millimeter wave and terahertz systems. In order to achieve a particular radiation beam, specific amplitude and phase distributions are required for all the array elements, which is conventionally realized through a properly designed feeding network. In the current work, a low-loss feeding network design approach based on epsilon-nearzero (ENZ) medium was proposed for large-scale antenna arrays with different beam requirements. Due to the infinite wavelength within the ENZ medium, a newly-discovered stair-like resonant mode was adopted for assigning a uniform phase distribution to each element, while the amplitudes and positions of these elements were optimized for generating particular beams. To implement the design philosophy in a low-loss manner, a hollow air-filled waveguide near cutoff frequency was employed to emulate the ENZ medium, and the bulk silicon microelectromechanical systems (MEMS) micromachining technology was utilized for chip-scale integration. As a specific example, a low-sidelobe antenna array at 60.0 GHz was designed, which realized an impedance bandwidth of 2.57%, a gain of 13.6 dBi and a sidelobe level as low as-20.0 dB within the size of 0.5 x 3.4 lambda 0 2 . This method is also compatible with a variety of applications, such as the highdirectivity antenna array, non-diffractive Bessel beam antenna array, and so on. Based on this innovative concept of applying ENZ medium to the on-chip antenna array, it shows the advantages of simple structure and low loss for on-chip beam synthesis without complex lossy feeding networks.
引用
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页数:9
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