Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-89 09
(800) 544-24 14
+44 2392-232392
Model JP520
Rev B
Pico Xinger
20dB Directional Coupler
Description
The JP520 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 JP520 is for power and frequency detection as well as
power injection. The JP520 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.
Available in both 5 of 6 tin lead (JP520) and 6 of 6 RoHS compliant tin
immersion (JP520S).
ELECTRICAL SPECIFICATIONS**
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
Operating
Temp.
dB Min Ave CW Watts ºC / Watt ºC
Features:
• 2.0 – 2.3 GHz
• UMTS and WCDMA
• Very Low Loss
• High Directivity
• Surface Mountable
• Tape and Reel
• Available in Lead-Free (as
illustrated) or Tin-Lead 20 25 35 -55 to +85
**Specification based on performance of unit properly installed on microstrip printed circuit
boards with 50 Ω nominal impedance. Specifications subject to change without notice.
JP520* Mechanical Outline
Dimensions are in Inches [Millimeters]
.250±.010
[6.35±0.25]
.200±.010
[5.08±0.25]
.064±.013
[1.64±0.33]
Pin 4
Pin 1 Pin 2
Pin 3
Pin 1
Pin 4
Pin 3
Pin 2
4X .020±.004
[0.51±0.10]
GND
4X .034±.004 SQ
[0.86±0.10]
Orientation
Marker Denotes
Pin Location
.170±.004
[4.32±0.10]
.120±.004
[3.05±0.10]
GND
Denotes
Array Number
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Available on Tape and
Reel For Pick and Place
Manufacturing.
Model JP520
Rev B
Typical Performance: 1.7 GHz. – 2.6 GHz.
Coupling JP52 0S
-21.5
-21.0
-20.5
-20.0
-19.5
1700 1900 2100 2300 2500
Frequency (MHz)
Coupli ng (dB )
Return Los s JP520S
-50
-40
-30
-20
-10
0
1700 1900 2100 2300 2500
Frequency (MHz)
Return Los s (dB)
Directivity JP520S
-50
-40
-30
-20
-10
0
1700 1900 2100 2300 2500
Frequency (MHz)
Directivity (dB)
Transmissio n Loss JP52 0S
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
1700 1900 2100 2300 2500
Frequency (MHz)
Transmission Loss (dB)
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%).
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.
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
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-89 09
(800) 544-24 14
+44 2392-232392
Model JP520
Rev B
VSWR & DIRECTIVITY (CONTI NUED)
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 JP520’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 specificati ons.
SUGGESTED FOOTPRINT
JP520* Mounting Footprint
Dimensions are in Inches [Millimeters]
To ensure proper electrical and thermal performance
there must be a ground plane with 100%
solder connection underneath the part
4X .063 SQ
[1.60]
4X .034
[0.86]
.170
[4.32]
.120
[3.05]
4X 50 Ω
Transmission
Line
Multiple
plated thru holes
to ground
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Available on Tape and
Reel For Pick and Place
Manufacturing.
Model JP520
Rev B
PACKAGING
Packaging follows EIA-481-2. Parts are oriented in tape as shown below. Minimum ord er quantities are 2000
per reel and 77 per tube.
Xinger® Tape & Reel Diagram
