©2015 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
2017-04-24 Rev. A Page 1 of 2
Note: CTS tests each unit to the critical specifications above.
Subsequent audits may deviate due to repeatability among
different test systems which shall not exceed these allowances.
Specification Allowance
Insertion Loss
0.1 dB
Return Loss
1.0 dB
Attenuation
1.0 dB
USB350A - PRELIMINARY
3.3-3.8GHz USB Series TDD Bandpass Filter
Features
Low Loss with High Rejection
Low ripple
Universal footprint across family for all TDD bands
Applications
Wireless Infrastructure applications
High-performance carrier-grade single-band TDD Pico-cell
basestations for up to 5.0W at the antenna port.
Description
Surface mount ceramic bandpass filter supports a universal footprint across all TDD frequency bands enabling the
use of a common system PCB. Superior rejection, insertion loss, reliability, as well as both peak and average
power handling compared to other bandpass filter technologies.
Electrical Specifications
Parameter
Typical
at 25⁰C
Spec.
at 25⁰C
Spec. over
-40⁰C to +85⁰C
Nominal Impedance
50 ohms
-
-
Average Input Power
-
-
8.0 Watt max
Peak Input Power
-
-
80 Watt max
Input-Output Response
Passband Insertion Loss (5 MHz avg)
0.8 dB
1.0 dB max
1.0 dB max
Passband Ripple
0.3 dB
0.5 dB max
0.5 dB max
Passband Return Loss
17 dB
14 dB min
14 dB min
Attenuation:
60 dB
55 dB min
55 dB min
48 dB
43 dB min
43 dB min
48 dB
43 dB min
43 dB min
Part Dimensions: 25.9 × 5.5 × 6.7 mm • 2.8 g
Materials: Ag plated ceramic block with tin plated brass shield
©2015 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
PRELIMINARY - USB350A
3.3-3.8GHz USB Series TDD Bandpass Filter
2017-04-24 Rev. A Page 2 of 2
Dim.
Nominal
(mm)
Tolerance
(±mm or Max)
A
25.90
max
B
4.80
max
C
1.70
0.13
D
0.80
0.13
E
0.80
0.13
F
4.20
0.13
G
16.90
0.13
H
6.70
max
I
1.00
0.13
J
0.70
max
Dimension
Units
Spec.
Reel Diameter
mm
330
Reel Weight
kg
5.5
Reel Quantity
ea.
500
Mechanical Drawing
PCB Layout
Packaging and Marking
Electrical Response
OUT
T
IN
UL
Product Marking
CTS
350
YWW
Customer Feed Direction → → →
Wo
Ao
Bo
Ko
Po
1.732 in
44.0 mm
0.236 in
6.00 mm
1.028 in
26.10 mm
0.283 in
7.20 mm
0.472 in
12.0 mm
Simulation
NOTE: The width of 9.50mm is necessary to
support frequencies as low as 1885MHz for
Band 39. If only higher frequency TDD
bands are supported, then a smaller space
can be allocated on the layout.