Study of s 40dBi gain waveguide-type planar antenna of simple structure with 90% efficiency at 100GHz

研究%20of%20s%2040dBi%20增益%20波导型%20平面%20天线%20of%20简单%20结构%20with%2090%%20效率%20at%20100GHz

• 批准号: 17360175
• 负责人: HIROKAWA Jiro
• 金额: $ 7.84万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360175/
• 关键词: information communication technology; advanced communication; injection molding; precision component fabrication; algorithm; antenna; center feed; alternating-phase feed

We fabricate the single-layer slotted waveguide array antenna by diffusion bonding of laminated thin metal plates at 94GHz. We expect to reduce the fabrication cost in comparison with conventional die-casting because we etch only three patterns for the slotted plate, the groove feeding structure and the base plate with an input aperture. This fabrication method can be applied to conventional complicated structures of double layers. We achieve 45% efficiency for 30dBi gain in the first fabrication. Unfortunately we have no time to expand this method to a 40dBi gain antenna.We fabricate a 25mm-long straight waveguide at 94GHz by laser-hardening epoxy resin and by plating nickel. We expect to fabricate a complicated three-dimensional structure by one body seamlessly for reducing the connecting loss. We achieve 0.8dB transmission loss which is comparable to a conventional standard metal waveguide.We put a 45mm-square-wide 0.4mm-thickness air layer in a 0.9mm-thickness copper-clad PTFE substrate. We expect to reduce the transmission loss by 40% in comparison with a conventional dielectric full-filled substrate. We also design the circuit to excite a TEM wave in the partially-filled substrate.

我们在94 GHz用金属薄板扩散连接的方法制作了单层缝隙波导阵天线。与传统压铸相比，我们预计将降低制造成本，因为我们只刻出了槽板、槽进给结构和带有输入孔的底板的三种图案。这种制作方法可以应用于传统的复杂双层结构。在第一次制作中，我们获得了45%的30dBi增益效率。不幸的是，我们没有时间将这种方法扩展到40dBi增益天线。我们通过激光硬化环氧树脂和镀镍在94 GHz上制作了25 mm长的直波导。为了减少连接损耗，我们期望通过一个实体无缝地制造出复杂的三维结构。我们在0.9 mm厚的聚四氟乙烯基板上放置了一个45 mm的方形宽0.4 mm厚的空气层，获得了与传统标准金属波导相当的0.8dB的传输损耗。与传统的全填充介质基板相比，我们期望将传输损耗降低40%。我们还设计了在部分填充的衬底中激发瞬变电磁波的电路。

项目成果

A Lightweight Radial Line Slot Antenna with Honeycomb Structure for Space Use

空间用轻型蜂窝结构径向线缝隙天线

• 发表时间: 2008
• 期刊: IEICE Trans. Commun. 91
• 作者: Hideki Ueda;Jiro Hirokawa;Makoto Ando;Osamu Amano and Yukio Kamata
• 通讯作者: Osamu Amano and Yukio Kamata

Reduction of Azimuthal Amplitude Ripple in the Rotating-Mode Feed to a Radial Waveguide by Using a Crossed Dog-Bone Slot

使用交叉狗骨槽减少径向波导旋转模式馈电中的方位振幅纹波

• 发表时间: 2007
• 期刊: IEEE Trans. Antennas & Propagat. 55
• 作者: Kaoru Sudo;Toru Oizumi;Jiro Hirokawa and Makoto Ando
• 通讯作者: Jiro Hirokawa and Makoto Ando

A single-layer hollow-waveguide 8-way Butler matrix

• DOI: 10.1093/ietele/e89-c.7.1080
• 发表时间: 2005-07
• 期刊: 2005 IEEE Antennas and Propagation Society International Symposium
• 作者: Shin-ichi Yamamoto;J. Hirokawa;M. Ando

Grating lobes suppression in transverse slot linear array with a Dual Parasitic Beam of strip dipoles

• DOI: 10.1093/ietcom/e88-b.6.2320
• 发表时间: 2005-06-01
• 期刊: IEICE TRANSACTIONS ON COMMUNICATIONS
• 影响因子: 0.7
• 作者: Hossain, MGS;Hirokawa, J;Ando, M
• 通讯作者: Ando, M

An Alternating-Phase Fed Single-Layer Slotted Waveguide Array in 76 GHz Band and Its Sidelobe Suppression

76 GHz频段交相馈电单层开缝波导阵列及其旁瓣抑制

• 发表时间: 2005
• 期刊: IEICE Trans.Electron. 88・10
• 作者: Y.Kimura;M.Takahashi;J.Hirokawa;M.Ando;M.Haneishi
• 通讯作者: M.Haneishi