一、产品特点
声表面波滤波器(也称声表滤波器或SAW滤波器)是利用压电材料的压电特性,用输入与输出换能器(Transducer)将电波的输入的电信号转换成机械能,经处理后,再把机械能转换成电信号,以达到过滤不必要的信号及杂讯来提升收讯品质为目标。声表滤波器参数(中心频率:30MHz--3GHz;带宽:100KHz--200MHz)、贴片封装(SMD 3030;3838;5050;7050;1365)、插损小(≤2.0dB)、工作温度宽(-25℃--+60℃;储存温度为:-45℃--+85℃)、产品的一致性好、安装更方便、体积更小。其主要功能在于把杂讯滤掉。该类产品可替代LC谐振电路,用于级间耦合和滤波。

二、产品参数
型号 | 中心频率(MHz) | 带宽(MHz) | 插损(dB) | 封装(mm) |
XF-21M400-0.25M-3616 | 21.4 | 0.25 (1 dB) | 10 | 36.0*16.0 |
XF-35M420-1M-1367
| 35.42 | 1 (3 dB) | 19 | 13.7*6.7 |
XF-36M170-0.3M-1365 | 44.0
| 4.7 (1 dB) | 25 | 18.6*8.5 |
XF-60M000-15M-1365 | 60
| 15 (1 dB) | 15 (max) | 13.3*6.5 |
XF-70M000-0.09M-1365 | 70 | 0.09 (1 dB) | 4 | 13.3*6.5 |
XF-70M000-41M-2212 | 70 | 41 (3 dB) | 24.7 | 22.2*12.8 |
XF-108M050-50M-1365 | 108.05 | 50 (1 dB) | 4 | 13.3*6.5 |
XF-1252M000-25M-3030 | 1252.00 | 25 | 2.5 dB | 3.0*3.0 |
XF-1268M000-20M-3030 | 1268.00 | 20 | 1.8 dB | 3.0*3.0 |
XF-1268M520-36M6-3030 | 1268.52 | 36.6(3dB) | 3 dB | 3.0*3.0 |
XF-1278M000-20M-3030 | 1278.00 | 20 | 2 dB | 3.0*3.0 |
XF-1542M000-34M-3030 | 1542.00
| 34 | 1.3 dB | 3.0*3.0 |
XF-1550M000-20M-3030 | 1550.00 | 20 | 4 dB | 3.0*3.0 |
XF-164M180-0.075M-1145 | 164.18 | 0.075 (1 dB) | 4 (max) | 11.0*-4.5 |
XF-243M000-0.13M-7050 | 243.00 | 0.13 (1 dB) | 5.5 | 7.0*5.0 |
XF-294M200-20M-7050 | 294.20 | 20 (1.2 dB) | 23 (max) | 7.0*5.0 |
XF-409M000-0.28M-5050 | 409.00 | 0.28 (3 dB) | 6 | 5.0*5.0 |
XF-433M920-0.75M-5050 | 433.92 | 0.75 | - | 5.0*5.0
|
XF-480M000-27M-TO39 | 480.00 | 27 (3 dB) | 20
| TO-39 (直径9.3) |
XF-900M000-7M-1145 | 900.00 | 7 (3 dB) | 4 | 11.0*4.5 |
XF-932M000-5M-3838 | 932.00 | 5 (3 dB) | 4.5 | 3.8*3.8 |
XF-1176M000-20M-3030 | 1176.00 | 20 | 2 dB | 3.0*3.0 |
XF-1176M450-56M-3030 | 1176.00
| 56 (3 dB) | 2.0 dB | 3.0*3.0 |
XF-1199M000-108M-3030 | 1199.00 | 108 | 5.0 dB | 3.0*3.0 |
XF-1224M000-130M-3030 | 1224.00 | 130 (3 dB) | 4.8 dB | 3.0*3.0 |
XF-1240M000-8M-3030 | 1240.00 | 8 | 3.5 dB | 3.0*3.0 |
XF-1245M000-96M-3030 | 1245.00 | 96 (3 dB) | 2.9 dB | 3.0*3.0 |
XF-1250M000-45M-3838 | 1250.00 | 45 | - | 3.8*3.8 |
XF-1268M000-20M-3030 | 1268.00 | 20 | 1.8 dB | 3.0*3.0 |
XF-1268M520-36M6-3030 | 1268.52 | 36.6 (3 dB) | 3 dB | 3.0*3.0 |
XF-1268M520-64M-3030 | 1268.52 | 64 (3 dB) | 1.0 dB | 3.0*3.0 |
XF-1542M000-34M-3030 | 1542.00 | 34 | 1.3 dB | 3.0*3.0 |
XF-1561M000-21M-3030 | 1561.00 | 21 | (矩形系数好) 4 dB | 3.0*3.0 |
XF-1561M000-21M-3030 | 1561.00 | 21 | (低插损) 2.3 dB | 3.0*3.0 |
XF-1561M100-4M092-3030 | 1561.10 | 31 (3 dB) | 3.0 dB | 3.0*3.0 |
XF-1568M000-18M-3030 | 1568.00
| 18 | 1.8 dB | 3.0*3.0 |
XF-1568M000-59M-3030 | 1568.00 | 59 (3 dB) | 1.0 dB | 3.0*3.0 |
XF-1570M000-20M-3030 | 1570.00 | 20 | 4 dB | 3.0*3.0 |
XF-1573M000-62M-3030
| 1573.00 | 62 (3 dB) | 0.75 dB | 3.0*3.0 |
XF-1573M000-80M-3030 | 1573.00 | 80 (3 dB) | 2.8 dB | 3.0*3.0 |
三、产品用途
声表面波滤波器(也称声表滤波器或SAW滤波器)的缺点是插入损耗比LC谐振电路大,但是比传统的 LC 滤波器安装更简单、体积更小,因此声表谐振器被广泛应用在各种无线通讯系统、电视机、录放影机及全球卫星定位系统接收器上。