Active Antenna System for One and Two Dimentional Phased Array Operation

用于一维和二维相控阵操作的有源天线系统

• 批准号: 07650431
• 负责人: NOGI Shigeji
• 金额: $ 1.22万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650431/
• 关键词: Microwave and Millimeter wave; Active antenna; Phased array; Power combining; Mutual synchronization

Phased array operation of active antennas is based on in-phase synchronized oscillation of element antennas. Both analytical and experimental investigation was carried out to obtain the dependence of mutual admittance and synchronization phase differene between two adjacent active antennas on antenna separation, and showed that the ranges of antenna separtaiton for in-phase synchronization are almost independent of the number of antenna elements.For Frequency controlled one- and two-dimensional phased array operation of bi-directionally coupled active antenna arrays, it was annalytically showen that phase differences between adjacent antennas can be varied up to 90 degrees by changing only the free-running frequencies of the edge antennas by the same amount in the opposite direction to each other.Since accurately controlled phased array operation needs uniformity in couplings between adjacent antennas, we proposed a new method to compensate for the nonuniformity in radiative couplings … More using resistor placed transmission-line couplings. It was confirmed in experiments under the compensation for up to four elements one-dimensional arrays and up to 3 * 3 elements two-dimensional arrays that active phase array behaviors almost agreed with the analysis can be obtained.For phased array operation of bi-directionally coupled one-diemnsional arrays which are controlled by injection signals with different phases at both the ends, beam steering angle of <plus-minus> 15 degrees was obtained in an experiment for a three active patch antenna array. It was analytically shown that there are undesired modes in this type of phased array systems. The undesired modes can be effectively suppressed by introducing a little deviation in the free-running oscillation frequency of either of the end active antennas. Suppression of undersired modes enlarges the steering angler. PSK modulation of antenna array outputs by PSK signal injection was also simulated, which clarified that the number of rise cycles of the output phases increases with the number of element antennas and is approxinately 150 cycles for a practical six-element arra Less

有源天线的相控阵工作是基于单元天线的同相同步振荡。分析和实验研究了相邻两根有源天线的互导纳和同步相位差对天线分离的影响，结果表明，同相同步的天线分离范围几乎与天线单元数无关。对于双向耦合有源天线阵的频率控制的一维和二维相控阵工作，分析表明，仅将边缘天线的自由运行频率在相反方向上改变相同的量，相邻天线之间的相位差就可以变化90度。由于精确控制相控阵的工作需要相邻天线间耦合的均匀性，我们提出了一种补偿辐射耦合不均匀性的新方法，即采用电阻放置传输在线耦合。实验证实，在最多4元的一维阵列和最多3 * 3元的二维阵列补偿下，有源相控阵的行为与分析结果基本一致。对于两端不同相位注入信号控制的双向耦合一维阵列相控阵工作，三有源贴片天线阵列的波束转向角为<正负> 15度。分析表明，这种类型的相控阵系统存在非期望模式。通过在任意一端有源天线的自由振荡频率中引入一点偏差，可以有效地抑制不希望出现的模式。抑制欠驱动模式增大了转向角度。模拟了PSK信号注入对天线阵列输出的PSK调制，结果表明，输出相位的上升周期数随着单元天线数量的增加而增加，对于一个实际的六单元天线，上升周期数约为150个周期

项目成果

M.Sanagi,S.Nogi,et al.: "Frequency-Controlled Phased Array of Coupled Microwave Oscillators with a Phased-Locked End" 1995 Asia-Pacific Microwave Conf.Proc.2. 940-943 (1995)

M.Sanagi、S.Nogi 等人：“具有锁相端的耦合微波振荡器的频率控制相控阵”1995 年亚太微波会议论文集 2。

R.Ispir,S.Nogi,et al.: "Transmission Line Coupled Active Microstrip Antennas for Phased Arrays" 1996 IEEE MTT-S Int.Microwave Symp.Digest. 2. 931-934 (1996)

R.Ispir、S.Nogi 等人：“用于相控阵的传输线耦合有源微带天线”1996 IEEE MTT-S Int.Microwave Symp.Digest。

Ragip ISPIR,Shigeji NOGI et al.: "Transmission Line Coupled Active Microstrip Antennas for Phased Arrays" 1996 IEEE MTT-S Int.Microwave Symp.Digest. 2. 931-934 (1996)

Ragip ISPIR、Shigeji NOGI 等人：“用于相控阵的传输线耦合有源微带天线”1996 IEEE MTT-S Int.Microwave Symp.Digest。

景山正明,野木茂次,他: "注入同期された発振器結合系の周波数制御フェイズドアレイ動作" 電子情報通信学会技術研究報告. MW95. 31-36 (1995)

Masaaki Kageyama、Shigetsugu Nogi 等人：“注入锁定振荡器耦合系统的频率控制相控阵操作”IEICE 技术报告 31-36 (1995)。

佐薙稔,野木茂次他: "注入信号と周波数で制御された能動フェーズドアレーアンテナ" 電子情報通信学会技術研究報告. MW96. 25-30 (1996)

Minoru Sanagi、Shigetsugu Nogi 等人：“由注入信号和频率控制的有源相控阵天线”IEICE 技术报告 25-30 (1996)。