压电与声光, 2022, 44 (3): 471, 网络出版: 2022-07-24
第二代北斗客户端用射频声表面波滤波器的研制
Development of RF SAW Filter for End-users of the Second Generation Beidou
摘要
介绍了一种可满足第二代北斗客户端用B3波段载频滤波的声表面波(SAW)射频滤波器。该滤波器采用“5换能器纵向耦合结构＋谐振器”的混合型设计方案, 在充分考虑了SMD3030A封装及键合引线寄生影响后, 成功研制出-1 dB带宽35 MHz、插入损耗2.2 dB、矩形系数1.9的滤波器产品。结果表明, 仿真与实测吻合性较好, 证明了该设计方案的可行性。
Abstract
In this article, a type of RF SAW filter that can meet the requirements of the B3 band carrier frequency filtering of the second generation Beidou end-users is introduced. A hybrid design scheme of 5-transducer longitudinal coupling structure plus resonator structure is adopted in the filter. The filter with -1 dB bandwidth of 35 MHz, insertion loss of 2.2 dB and shape factor of 1.9 has been developed after comprehensively considering the parasitic effects of the SMD3030A package and the bonding wires. The comparison shows that the simulation and measurement results are in good agreement, which proves the proposed design scheme is practicable.
参考文献
[1] 北斗卫星导航系统空间信号接口控制文件(公开服务信号(2.1版))［S］. 北京: 中国卫星导航系统管理办公室, 2016:5.
[2] 北斗卫星导航系统公开服务性能规范(2.0版)［S］. 北京: 中国卫星导航系统管理办公室,2018:6.
[3] 聂光皓, 申亮亮, 王新龙,等. 北斗卫星信号结构及其特性分析［J］. 航空兵器, 2020, 27(5):73-80.
[4] 童筱钧, 钟素娟, 朱浩, 等. 平坦通带高纵向耦合谐振滤波器的研制［J］. 压电与声光,2012,34(1):7-9.
[5] 毛世平,曾庆高,陈彦光,等. 高阻带抑制宽带低损耗声表面波滤波器研究［J］. 压电与声光,2018,40(3):337-339.
[6] 金剑,蒋欣,鄢秋娟,等. 低损耗、高矩形度声表滤波器设计研究［J］. 压电与声光, 2015,37(3):381-385.
[7] 蒋世义,张幸,陈彦光,等. 基于纵向耦合结构的宽带声表滤波滤波器设计［J］. 压电与声光,2013,35(3):315-317.
白涛, 张显洪, 董加和, 吴燕, 蒋道军, 许昕. 第二代北斗客户端用射频声表面波滤波器的研制[J]. 压电与声光, 2022, 44(3): 471. BAI Tao, ZHANG Xianhong, DONG Jiahe, WU Yan, JIANG Daojun, XU Xin. Development of RF SAW Filter for End-users of the Second Generation Beidou[J]. Piezoelectrics & Acoustooptics, 2022, 44(3): 471.
PDF全文
