CER0678A
1800 MHz DCS Duplexer
Features
• Low loss
• Flat Low Ripple
• High Rejection
Description
Surface mount, silver (Ag) coated ceramic
duplexer. Developed for use in DCS
infrastructure applications.
Weight: 3.0 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 (S21)
Passband Iloss
Passband Ripple
Passband Return Loss @ Port 2
Passband Return Loss @ Ant
Attenuation
Frequency
MHz
1740 - 1785
1740 - 1785
1740 - 1785
1740 - 1785
1710 - 1720
1835 - 1880
3480 - 3570
1835 - 1880
1835 - 1880
1835 - 1880
1835 - 1880
1740 - 1785
1805 - 1815
3670 - 3760
1740 - 1785
1785 - 1835
1835 - 1880
Revision B - Origin Date: November 14, 2008 – Revision Date: July 11, 2011
Typical
@ 25ºC
-1.60
1.00
-15.00
-15.00
-0.50
-54.00
-6.00
-1.80
1.00
-15.00
-15.00
-54.00
-2.50
-15.00
-52.00
-42.00
-52.00
Specification
@ 25ºC
-2.00
1.40
-13.50
-13.50
0.00
-50.00
-5.00
-2.10
1.40
-13.50
-13.50
-50.00
-1.00
-13.00
-50.00
-40.00
-50.00
Spec over
-40ºC to +85ºC
-2.20
1.50
-13.50
-13.50
0.00
-50.00
-5.00
-2.30
1.50
-13.50
-13.50
-50.00
-1.00
-13.00
-50.00
-40.00
-50.00
High Band Response (S13)
Passband Iloss
Passband Ripple
Passband Return Loss @ Port 3
Passband Return Loss @ Ant
Attenuation
Isolation (S23)
Rejection @ Low Band
Rejection @ Mid Band
Rejection @ High Band
Power into any port
5 Watt max
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 -
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