China Electronics Technology Group Corporation
No.26 Research Institute
70MHz IF SAW Filter
5MHz Bandwidth
Part Number: LBT7028S
www.sipatsaw.com
SIPAT Co., Ltd.
Typical Performance
Frequency Respond
Type Performance
Passband Respond
-21.5815
-22.5815
3dB CF = 69.9998MHz
1dB = 5.0051MHz
3dB = 5.5995MHz
-22.0815
-32.5815
40dB = 7.4864MHz
Insert Loss = -22.5815dB
Passband Ripple = 0.93413dB
Ultimate Rejection = 35.0421dB
-22.5815
M agnitude(dB)
-42.5815
Group Delay = 67.0768ns
Phase Linearity = 3.5953deg
Absolute Delay = 1427.2341ns
-23.0815
-52.5815
-23.5815
-62.5815
-24.0815
-72.5815
-24.5815
-82.5815
55
60
65
70
Frequency(MHz)
75
80
85
-25.0815
62
64
66
68
70
72
74
76
78
Horizontal: 5MHz/Div
Vertical: 10dB/Div
Horizontal: 2MHz/Div
Vertical: 0.5dB/Div
Group Delay Variation(f0±2MHz)
Type Performance
1700
Phase Linearity(f0±2MHz)
Type Performance
8
6
1600
4
X: 68.01
Y: 1.425
X: 70
Y: 0.05888
X: 68.01
Y: 1415
X: 70
Y: 1409
X: 71.99
Y: 1431
2
1500
Group Delay Time(ns)
0
Degree(deg)
X: 71.99
Y: -0.3449
1400
-2
-4
1300
-6
-8
1200
-10
1100
64
66
68
70
Frequency(MHz)
72
74
76
-12
64
66
68
70
Frequency(MHz)
72
74
76
Horizontal: 2MHz/Div
Vertical: 100ns/Div
Horizontal: 2MHz/Div
Vertical: 2deg/Div
Smith Chart S11
+j1.0
+j0.5
+j2.0
Smith Chart S22
+j1.0
+j0.5
+j2.0
+j0.2
+j5.0
+j0.2
+j5.0
0.2
0.5
1.0
2.0
5.0
0.2
0.5
1.0
2.0
0.0
∞
5.0
0.0
∞
-j0.2
-j5.0
-j0.2
-j5.0
-j0.5
-j1.0
-j2.0
-j0.5
-j1.0
-j2.0
SIPAT Co., Ltd.
( CETC No.26 Research Institute )
#14 Nanping Huayuan Road,
Chongqing, China, 400060
Tel: +86-23-62808818
Part Number
Rev. Date
Ver.
LBT7028S
2008-01-17
1.1
Page
3/4
Fax: +86-23-62805284
www.sipatsaw.com / sawmkt@sipat.com
SIPAT [ SIPAT Co,Ltd ]
