Data Sheet

CER0255B
899/938 MHz Duplexer
Rev 2 – Origin Date: August 30, 2005 – Revision Date: March 3, 2006
Features
• High Rejection
• Low Loss
Description
Surface mount, silver (Ag) coated
neodymium ceramic duplexer.
Weight: 3.9 grams typical
Material: Filter is composed of a ceramic
block plated with Ag and a shield made of
nickel silver plated steel.
Filter complies with RoHS standards.
Electrical Specifications
Parameter
Low Band Response
Passband Insertion Loss
Passband Return Loss @ TX
Passband Return Loss @ ANT
Attenuation:
High Band Response
Passband Insertion Loss
Passband Return Loss @ RX
Passband Return Loss @ ANT
Attenuation:
Power into any port
Frequency
(MHz)
Typical @ 25ºC Spec. @ 25ºC
Spec. -30ºC to
+85ºC
896 - 902
896 - 902
896 - 902
935 - 941
806 - 869
2.5 dB
13.5 dB
13.5 dB
47.0 dB
27.0 dB
2.8 dB max
10.0 dB min
10.0 dB min
45.0 dB min
25.0 dB min
3.0 dB max
10.0 dB min
10.0 dB min
45.0 dB min
25.0 dB min
935 - 941
935 - 941
935 - 941
896 - 902
2.5 dB
13.5 dB
13.5 dB
53.0 dB
2.8 dB max
10.0 dB min
10.0 dB min
50.0 dB min
3 Watt max
3.0 dB max
10.0 dB min
10.0 dB min
50.0 dB min
Note: Supplier shall test each filter to the critical electrical specifications of the above table. Any subsequent audits may deviate from in value due to
measurement repeatability among different test systems. Such deviations shall not exceed the following limits:
Specification Allowance
Insertion Loss
0.1 dB
Return Loss
1.0 dB
Stopbands
1.0 dB
•“This product is covered by one or more of the following U.S. and foreign patents including: US 4,692,726;US 4,742,562; US 4,800,348;US 4,829,274;US 5,146,193;EP 0573597;DE 0573597;FR 0573597;JP 508149/92;KR 142171;US
5,162,760;US 5,218,329;US 5,250,916;US 5,327,109;US 5,488,335;CA 2114029;FR 9306297;GB 2273393;JP 3205337;KR 115113;CN 93106228.4;US 5,512,866;EP 0706719;DE 0706719;FR 0706719;GB 0706719;CN 95190359.4;US
5,602,518;US 5,721,520;US 5,745,018;EP 0910875;DE 0910875;DK 0910875;FR 0910875;GB 0910875;IE 0910875;JP 505182/98;KR 10-323013;US 5,994,978;US 6,462,629;CN 00810420.4;US 6,559,735;US 6,650,202;US 6,834,429.Other
US and foreign patents pending.
•CTS Corporation 2006 reserves all copyrights in the layout, design and configuration of the patterns on this product.”
Document No. 008-0256-0
Page 1 of 2
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com - 171 Covington Drive - Bloomingdale, IL 60108 -
CER0255B
899/938 MHz Duplexer
Rev 1 – Origin Date: August 30, 2005 – Revision Date: January 11, 2006
Mechanical Drawing
Dim
A
B
C
D
E
F
G
H
I
J
K
L
M
*N
Electrical response
830
855
880
905
Nominal (mm)
Tolerance (mm)
+/- or max
21.54
max
2.72
7.95
7.95
0.76
1.00
1.00
0.76
9.80
8.90
4.00
0.80
0.20
0.20
0.20
0.13
0.13
0.13
0.13
0.30
0.20
max
0.13
PCB Layout
930
955
980
0
50
-10
40
-20
30
-30
20
-40
10
-50
0
-60
-10
-70
-20
-80
-30
-90
-40
-100
-50
899
938
Packaging and Marking
Customer Feed Direction
DIMENSION
REEL DIAMETER
REEL WEIGHT
REEL QUANTITY
UNITS SPECIFICATION
330
mm
2.6
kg
500
ea.
Document No. 008-0256-0
Page 2 of 2
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com - 171 Covington Drive - Bloomingdale, IL 60108 -
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