Data Sheet

CER0781A
1958.75 MHz Duplexer
Revision B – Origin Date: March 5, 2010 – Revision Date: July 11, 2011
Features
• High Rejection
• Low Ripple
• Low Loss
Description
Surface mount, silver (Ag) coated ceramic
duplexer. Developed for use in TDS-CDMA
infrastructure applications.
Weight: 3.7 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 Ripple
Passband Return Loss @ Ant
Passband Return Loss @ Low Band
Attenuation
High Band Response
Passband Insertion Loss
Passband Ripple
Passband Return Loss @ Ant
Passband Return Loss @ High Band
Attenuation:
Isolation
Rejection @ Low band
Rejection @ High band
Power into any port
Frequency
(MHz)
Typical @ 25ºC Spec. @ 25ºC
Spec. Over
-40ºC to +85ºC
1880 - 1920
1880 - 1920
1880 - 1920
1880 - 1920
0.1 - 1200
1200 - 1840
1840 - 1860
1940 - 1960
1960 - 2000
2000 - 2010
2010 - 2025
2025 - 2700
-2.4
0.9
-16.0
-16.0
-48.0
-32.0
-18.0
-27.0
-34.0
-47.0
-49.0
-37.0
-3.2
1.0
-14.0
-14.0
-38.0
-30.0
-16.0
-16.0
-25.0
-35.0
-45.0
-25.0
-3.5
1.2
-14.0
-14.0
-38.0
-30.0
-16.0
-16.0
-25.0
-35.0
-45.0
-25.0
2010 - 2025
2010 - 2025
2010 - 2025
2010 - 2025
0.1 - 1880
1880 - 1920
1920 - 1930
1930 - 1970
1970 - 1990
2045 - 2065
2065 - 2170
2170 - 2700
-2.4
0.4
-16.0
-16.0
-48.0
-58.0
-54.0
-34.0
-19.0
-19.0
-37.0
-42.0
-3.2
1.0
-14.0
-14.0
-43.0
-50.0
-43.0
-30.0
-16.0
-16.0
-33.0
-38.0
-3.5
1.2
-14.0
-14.0
-43.0
-50.0
-43.0
-30.0
-16.0
-16.0
-33.0
-38.0
1880 - 1920
2010 - 2025
-51.0
-46.0
-50.0
-45.0
2 Watts max
-50.0
-45.0
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 - 4800 Alameda Blvd. NE – Albuquerque, NM 87113-
CER0781A
1958.75 MHz Duplexer
Revision B – Origin Date: March 5, 2010 – Revision Date: July 11, 2011
Mechanical Drawing
ANT
1900
2017.5
Electrical response
Dim
Nominal (mm)
A
B
C
D
E
F
G
H
I
J
K
L
M
N
0.25
24.04
Tolerance (mm)
+/- or max
0.25
max
2.72
7.44
10.52
1.02
0.79
0.79
0.89
6.79
5.80
4.60
0.84
0.25
0.13
0.13
0.13
0.13
0.13
0.13
max
max
max
0.13
PCB Layout
1200 1400 1600 1800 2000 2200 2400 2600 2800
0
40
-10
30
-20
20
-30
10
-40
0
-50
-10
-60
-20
-70
-30
-80
-40
2017.5
ANT
1900
Packaging and Marking
DIMENSION
REEL DIAMETER
REEL WEIGHT
REEL QUANTITY
UNITS
mm
kg
ea.
SPECIFICATION
330
2.3
500
Customer Feed Direction
Wo
Ao
Bo
Ko
Po
Inches/mm
Inches/mm
Inches/mm
Inches/mm
Inches/mm
1.732" / 44.0 0.271" / 6.88 0.974" / 24.74 0.195" / 4.95 0.472" / 12.0
Document No. 008-0256-0
Page 2 of 2
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com - 4800 Alameda Blvd. NE – Albuquerque, NM 87113-
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