Model 1P620
Model 1P620
Rev. B
Pico Xinger
20dB Directional Coupler
Description
The 1P620 Pico Xinger is a low profile, miniature 20dB directional coupler
in an easy to use surface mount package designed for MMDS and WLAN
applications. The 1P620 is for power and frequency detection as well as
power injection. The 1P620 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 (1P620) and 6 of 6 RoHS compliant tin
immersion (1P620S).
ELECTRICAL SPECIFICATIONS**
Features:
•
•
•
•
•
•
•
2.3 – 2.7 GHz
MMDS and WLAN
Very Low Loss
High Directivity
Surface Mountable
Tape And Reel
Available in Lead-Free (as
illustrated) or Tin-Lead
Frequency
Mean
Coupling
Insertion
Loss
VSWR
Freq.
Sensitivity
GHz
dB
dB Max
Max : 1
dB Max
2.3 – 2.7
20 ± 0.75
0.25
1.22
± 0.2
Directivity
Power
Handling
ΘJC
dB Min
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.
Pin 1
.250±.010
[6.35±0.25]
.064±.013
[1.64±0.33]
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
Pin 3
Pin 3
.170±.004
[4.32±0.10]
Pin 4
Dimensions are in Inches [Millimeters]
1P620* Rev A Mechanical Outline
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 1P620
Rev. B
Typical Performance: 2.0 GHz. – 3.0 GHz.
Coupling 1P620S
Return Loss 1P620S
-19.5
0
-10
Return Loss (dB)
Coupling (dB)
-20.0
-20.5
-20
-30
-21.0
-40
-21.5
2000
2200
2400
2600
2800
-50
2000
3000
2200
2600
2800
3000
2800
3000
Transmission Loss 1P620S
0.00
-10
-0.05
Transmission Loss (dB)
Directivity (dB)
Directivity 1P620S
0
-20
-30
-40
-50
2000
2400
Frequency (MHz)
Frequency (MHz)
-0.10
-0.15
-0.20
2200
2400
2600
2800
3000
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.
(315) 432-8909
(800) 544-2414
+44 2392-232392
2200
2400
2600
Frequency (MHz)
Frequency (MHz)
USA/Canada:
Toll Free:
Europe:
-0.25
2000
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 1P620
Rev. B
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 1P520’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 Ω
Transmission
Line
Dimensions are in Inches [Millimeters]
1P620* Rev A 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 1P620
Rev. B
PACKAGING
Packaging follows EIA-481-2. Parts are oriented in tape as shown below. Minimum order quantities are 2000
per reel and 77 per tube.
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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