基于基片集成脊波导的缝隙阵列天线的仿真与实验研究

为了降低缝隙天线阵列的重量和体积,提出了基于介质集成脊波导的缝隙阵列天线。专门设计了一种渐变微带线与介质集成脊波导的过渡结构,使得天线可以使用SMA接头进行馈电。在CST Microwave Studio软件中建立了工作于C波段的介质集成脊波导4缝天线阵列模型并进行了仿真分析,并使用仿真数据建立了天线的等效磁流阵列模型,很好地解释了天线的辐射特性。仿真与实验结果表明,4缝天线具有10.8%的阻抗带宽(4.4~4.9 GHz),带内增益为8.5 d Bi。天线为印刷型结构,具有剖面低、重量轻、易于集成、带宽较宽及增益较高的特点,可以广泛应用在相应频段的通信设备中。

The Simulation and Experiment of Slot Antenna Array based on Ridge Substrate Integrated Waveguide

To reduce weight and volume of slot array antenna, a slot array antenna based on ridge substrate integrated waveguide (RSIW) is proposed. A transition structure of gradient microstrip line and ridge substrate integrated waveguide is specially designed. Thus, the proposed antenna can be fed by SMA adapter connector. CST Microwave Studio? has been used to created and simulate model of the proposed RSIW 4-slot antenna array, which work in C waveband. The simulated data has been used to create model of antenna equivalent magnetic flow array. This model can well explain the radiation characteristic of proposed antenna. According to the simulated and experimental results, 4-slot antenna has impedance bandwidth of 10.8% (4.4-4.9GHz).The in-band gain is 8.5dBi.The proposed antenna is in printing type structure. It has characteristics of low profile, light weight, integrated easily, wide bandwidth and high gain. This kind of antenna can be widely used in mobile communication device working in the corresponding frequency band