CER0644A
1797.5 MHz Duplexer
Document No. 008-0256-0 Page 1 of 2 Rev. X4VH
-CTS Electronic Components - www.ctscorp.com –4800 Alameda Blvd NE -Albuquerque, NM 87113 -
Features
•Low Insertion Loss
•Low Ripple
•Excellent Rejection and Isolation
Description
Surface mount, silver (Ag) coated ceramic
duplexer. Developed for use in 1770 MHz
Infrastructure Applications.
Weight: TBD grams typical
Material: Filter is composed of a ceramic
block plated with Ag and a shield made of
Sn plated steel.
Filter complies with RoHS standards.
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
Electrical Specifications
•“This product is covered by one or more of the following U.S. andforeign 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.”
Revision B -Origin Date: September 12, 2009 –Revision Date: July 27, 2011
Parameter
Frequency
MHz
@ 25ºC
@ 25ºC
-40ºC to +85ºC
Low Band Response
Passband Iloss 1745 - 1755 -2.30 -2.40 -2.50
Passband Ripple 1745 - 1755 0.90 1.40 1.50
Passband Return Loss @ Ant 1745 - 1755 -13.00 -12.00 -12.00
Passband Return Loss @ Low Band 1745 - 1755 -13.00 -12.00 -12.00
Attenuation 1840 - 1850 -60.00 -55.00 -55.00
3490 - 3510 -11.00 -10.00 -10.00
High Band Response
Passband Iloss 1840 - 1850 -2.30 -2.40 -2.50
Passband Ripple 1840 - 1850 1.00 1.40 1.50
Passband Return Loss @ Ant 1840 - 1850 -13.00 -12.00 -12.00
Passband Return Loss @ High Band 1840 - 1850 -13.00 -12.00 -12.00
Attenuation 1745 - 1755 -60.00 -55.00 -55.00
3680 - 3700 -19.00 -15.00 -15.00
Isolation
Rejection @ Low Band 1745 - 1755 -61.00 -60.00 -60.00
Rejection @ midpoint 1755 - 1840 -51.00 -50.00 -50.00
Rejection @ High Band 1840 - 1850 -61.00 -60.00 -60.00
Power into any port 3 Watt max
