基于LTCC的S频段新型耐高温天线设计  

Design of an S-band Novel High Temperature Antenna Based on LTCC

作　　者：刘秀祥[1] 秦永强[1] 赵良[1] 曾贵明[1] 

机构地区：[1]北京临近空间飞行器系统工程研究所,北京100076

出　　处：《电讯技术》2012年第9期1513-1517,共5页Telecommunication Engineering

摘　　要：基于低温共烧陶瓷(LTCC)技术与传统的贴片天线,设计了一种S频段新型耐高温天线。该天线充分发挥了LTCC材料良好的耐高温性能,能够承受的最高温度可达400℃左右。通过两层耦合贴片的设计方法,使天线可以工作在一个较宽的频率范围内,解决了高介电常数引起的窄带工作和高温导致的谐振频率偏移问题。同时,微带馈线部分通过阶梯阻抗变换,降低了天线的回波损耗,提高了端口的匹配效率。仿真结果表明,当天线工作的中心频率为2.67 GHz、工作环境温度为25℃到400℃时,可用带宽为100MHz,且辐射方向性稳定。An S-band novel high temperature antenna is presented based on low temperature co-fired ceramic （LTCC） and conventional patch antenna. The maximum temperature which the antenna can withstand is about 400℃ via the good temperature performance of LTCC material. With two layers of coupled patches antenna can operate in broad bandwidth, which solves the problems of narrow bandwidth and resonant frequency offset. By stepped impedance transformer, the return loss is reduced and the match efficiency is improved. Simulation results show that the antenna bandwidth is 100 MHz and the radiation pattern is stable, when the operating frequency is 2.67 GHz and the temperature range is from 25 ℃ to 400℃.

关 键 词：S频段天线 耐高温 低温共烧陶瓷 耦合贴片 

分 类 号：TN821[电子电信—信息与通信工程]