Model JP520S
Model JP520S
Rev A
Pico Xinger
20dB Directional Coupler
Description
The JP520S Pico Xinger is a low profile, miniature 20dB directional coupler
in an easy to use surface mount package designed for UMTS and WCDMA
applications. The JP520S is for power and frequency detection as well as
power injection. The JP520S is an ideal solution for the ever-increasing
demands of the wireless industry for smaller printed circuit boards and high
performance. Parts have been subjected to rigorous qualification testing
and units are 100% tested. They are manufactured using materials with x
and y thermal expansion coefficients compatible with common substrates.
ELECTRICAL SPECIFICATIONS**
Features:
•
•
•
•
•
•
•
•
•
2.0 – 2.3 GHz
UMTS and WCDMA
Very Low Loss
High Directivity
Surface Mountable
Tape and Reel
New Pico-Package
100% Tested
Lead Free
Frequency
Mean
Coupling
Insertion
Loss
VSWR
Freq.
Sensitivity
GHz
dB
dB Max
Max : 1
dB Max
2.0 – 2.3
20 ± 0.75
0.25
1.22
± 0.2
Directivity
Power
Handling
ΘJC
dB Min
Ave CW Watts
ºC / Watt
ºC
20
25
35
-55 to +85
Operating
Temp.
**Specification based on performance of unit properly installed on microstrip printed circuit
boards with 50 Ω nominal impedance. Specifications subject to change without notice.
Top View (Near-side)
Pin 1
.250±.010
[6.35±0.25]
Side View
Bottom View (Far-side)
.066±.007
[1.67±0.18]
Pin 2
Pin 2
4X .020±.004
[0.51±0.10]
Pin 1
GND
Orientation
Marker Denotes
Pin Location
.200±.010
[5.08±0.25]
.120±.004
[3.05±0.10]
4X .034±.004 SQ
[0.86±0.10]
GND
Pin 4
Denotes
Array Number
Dimensions are in Inches [Millimeters]
JP520S Mechanical Outline
Pin 3
Pin 3
.170±.004
[4.32±0.10]
Pin 4
Tolerances are Non-Cumulative
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Model JP520S
Rev A
Typical Performance: 1.7 GHz. – 2.6 GHz.
Coupling JP520S
Return Loss JP520S
-19.5
0
-10
Return Loss (dB)
Coupling (dB)
-20.0
-20.5
-21.0
-21.5
1700
-20
-30
-40
1900
2100
2300
-50
1700
2500
1900
-10
-0.05
-20
-30
2500
-0.10
-0.15
-0.20
-40
-0.25
1900
2100
2300
2500
Frequency (MHz)
Anaren uses mean coupling and frequency sensitivity
with the coupling specification. The mean coupling value
is arrived at by periodically sampling the coupling value
over the specified band and averaging the readings.
Frequency sensitivity is the peak to peak variation in
coupling over the specified band.
(315) 432-8909
(800) 544-2414
+44 2392-232392
1700
1900
2100
2300
2500
Frequency (MHz)
COUPLING
Choice of a coupling value in an application normally
depends on the power level of the main (sampled) line.
For example, if the coupler is being used to monitor main
line power, the coupling value is selected to provide
sufficient power to the monitoring device and yet
minimize system loss. Note that any coupler reduces
power flowing in the main line by the amount coupled off;
a 10dB coupler reduces main line power by 1 dB (10%)
where a 20dB coupler reduces it by only 0.044dB (1%).
USA/Canada:
Toll Free:
Europe:
2300
Transmission Loss JP520S
0.00
Transmission Loss (dB)
Directivity (dB)
Directivity JP520S
0
-50
1700
2100
Frequency (MHz)
Frequency (MHz)
Available on Tape and
Reel For Pick and Place
Manufacturing.
VSWR & DIRECTIVITY
In directional couplers, directivity is specified in lieu of
isolation. Directivity is a measure of how well the coupled
power is isolated from reflections at the main line output
port. For example, open or short circuiting the output port
of a coupler with 20dB directivity would only affect the
coupled output power by 1% and only 0.1% for 30dB
directivity. High directivity is especially important if the
coupler is being used to measure the VSWR of a device
at its output port.
In this application, accurate
measurements of forward and reverse power are
required.
In theory, VSWR and directivity characteristics of a
coupler are perfect; the input and output ports are
perfectly matched and no power is coupled to the isolated
port. In practice, factors associated with the design and
manufacturing processes limit VSWR and directivity. The
Model JP520S
Rev A
VSWR & DIRECTIVITY (CONTINUED)
internal meandering of the coupled lines and
limitations of building perfect 50Ω transitions at the
input and output ports of the device are the most
significant factors against perfect VSWR and
directivity. Typically, VSWR and directivity of 1.15:1
and 25 dB respectively are achieved in practice.
INSERTION LOSS
Coupler insertion loss is defined as the log of the
input power divided by the sum of the power at the
two output ports.
In practice, typical loss is
approximately 0.20 dB.
Specification limits are
somewhat higher due to imperfect test conditions;
surface mount couplers must be tested in test
fixtures that negatively affect results.
PIN CONFIGURATION
The JP520S’s have an orientation marker to denote
either pin 1 or pin 2. When the input port is
identified, the output, coupled and isolated ports are
known automatically. For example, if the input port
for a device was selected to be Pin 1, Pin 2
automatically becomes the output port, Pin 4
becomes the coupled port, and Pin 3 is the isolated
port. Similarly, if Pin 2 was to be selected as the
input port, the adjacent port on the long side (Pin 1)
is the output port, the adjacent port on the short side
(Pin 3) is the coupled port, and the opposite port (Pin
4) is the isolated port. Either port on the same side
as the orientation marker can be selected as the
input port, as shown in the table, which shows both
pin configurations. The use of pin 1 or pin 2 as the
input port ensures phase consistency as well as
maximum power handling.
MOUNTING
For Xinger surface mount couplers to operate optimally,
there must be 50Ω transmission lines leading to and
from all of the RF ports. To ensure proper electrical
and thermal performance, there must be a ground
plane with 100% solder connection underneath the
part. If either of these two conditions is not satisfied,
insertion loss, coupling, VSWR and directivity may not
meet published specifications.
SUGGESTED FOOTPRINT
To ensure proper electrical and thermal performance
there must be a ground plane with 100%
solder connection underneath the part
Multiple
plated thru holes
to ground
.170
[4.32]
.120
[3.05]
4X .034
[0.86]
4X .063 SQ
[1.60]
4X 50
Transmission
Line
Dimensions are in Inches [Millimeters]
JP520S Mounting Footprint
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Model JP520S
Rev A
PACKAGING
Packaging follows EIA-481-2. Parts are oriented in tape as shown below.
Xinger® Tape & Reel Diagram
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Available on Tape and
Reel For Pick and Place
Manufacturing.
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