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1X503 PDF даташит

Спецификация 1X503 изготовлена ​​​​«Xinger» и имеет функцию, называемую «Hybrid Coupler».

Детали детали

Номер произв 1X503
Описание Hybrid Coupler
Производители Xinger
логотип Xinger логотип 

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1X503 Даташит, Описание, Даташиты
1X503
SMT 90o Hybrid Coupler
VER03/28/99
1X503
Features:
1.7 - 2.0 GHz
Very Low Loss
High Isolation
90o Quadrature
Surface Mountable
Tape And Reel
Convenient Package
100% Tested
Description:
The 1X503 is a low profile, miniature 3dB hybrid
coupler in an easy to use surface mount package
designed for DCS and PCS applications. The 1X503
is designed for balanced amplifiers and signal
distribution and is an ideal solution for the ever
increasing demands of the wireless industry for
smaller printed circuit boards. Parts have been run
through rigorous qualification testing and units are
100% tested. They are manufactured using
materials with x and y thermal expansion coefficients
compatible with common substrates such as FR4, G-
10 and polyamide.
MECHANICAL OUTLINE:
www.DataSheet4U.com
ELECTRICAL SPECIFICATIONS:
Specification
Frequency
Isolation
Insertion Loss
VSWR
Amplitude Balance
Phase Balance
Power Handling
ΘJC
1X503
Bandwidth
1.7 - 2.0
23
0.20
1.17
+0.20
2
60
20.6
Units
GHz
dB min.
dB max.
Max:1
dB max.
Degrees max.
Avg. Watts - CW max.
Deg.C/Watt
Specifications based on performance of units installed in an RF test fixture. 50 ohms nominal impedance. -55oC to +85oC operating temperature. Unit will
operate to +125oC with minor degradation in Insertion Loss performance. Specifications subject to change without notice.
Page 1 of 3
Available on Tape and
Reel For Pick and
Place Manufacturing.
USA/Canada: (315) 432-8909
Toll Free:
(800) 544-2414
Europe:
+44 1705-232392









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1X503 Даташит, Описание, Даташиты
TYPICAL PERFORMANCE: (@ 25oC in test fixture)
Coupling 1X503
-2.6
0
1X503
Data Sheet VER03/28/99
Return Loss 1X503
-10
-2.9
-20
-3.2
-30
-3.5
-40
-3.8
1400
0
1650
1900
Frequency [MHz]
Isolation 1X503
2150
2400
-50
1400
-87
1650
1900
Frequency [MHz]
2150
Phase Balance 1X503
2400
-88
-10
-89
-20 -90
-91
-30
-92
-40
1400
1650
1900
Frequency [MHz]
www.DataSheet4U.com
AMPLITUDE BALANCE
2150
2400
3dB hybrids are a type of backward wave coupler. In the
design of these couplers, the even mode impedance was
chosen to ‘critically couple’ or slightly ‘over couple’ at mid
band to maximize performance and bandwidth. The
amplitude balance specification is defined as the decibel
difference between the two output curves.
PHASE BALANCE
In theory, output ports of a backward wave hybrid coupler
remain in perfect phase quadrature independent of
frequency. In practice, factors associated with the
manufacturing processes slightly degrade performance.
The specification is typical two to three degrees maximum
although in practice, phase balance is statistically better
than specified (<1o).
-93
1400
1650
1900
Frequency [MHz]
2150
2400
VSWR & ISOLATION
Similar to phase balance, the VSWR and isolation of a
coupler are theoretically perfect; where 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 isolation. The significant limitations are
associated with the internal meandered circuit traces as
well as limitations of building perfect 50transitions at
the input and output ports of the device. Typically,
VSWR and isolation of 1.15:1 and 25 dB respectively are
achieved in practice.
INSERTION LOSS
Coupler insertion loss is defined as the difference of the
input power from the sum of the output power. In
Page 2 of 3
Available on Tape and
Reel For Pick and
Place Manufacturing.
USA/Canada: (315) 432-8909
Toll Free:
(800) 544-2414
Europe:
+44 1705-232392









No Preview Available !

1X503 Даташит, Описание, Даташиты
1X503
Data Sheet VER03/28/99
practice, loss is typically 0.15 dB. Specification limits are
somewhat higher due to imperfect test conditions; as the
couplers must be tested in fixtures which negatively effect
results.
PIN CONFIGURATION
Surface Mount 3dB Coupler Layout
All of the standard surface mount 3dB hybrid couplers
have pin orientations which are symmetrical. When a port
is designated as the input, automatically the two output
and isolated ports are defined. For example, if the input
port for a device was selected to be Pin 1, Pin 2 is
automatically the isolated port, Pin 4 is the 0 degree
reference output port, and Pin 3 is the output port which
“lags” behind the reference output port by 90 degrees.
Similarly, if Pin 3 was to be selected as the input port, the
adjacent port on the long side (Pin 4) is the isolated port,
the adjacent port on the short side (Pin 2) is the 0 degree
output port, and the opposite port (Pin 1) is the -90 degree
output port. Below is a table of all possible orientations.
are not satisfied, insertion loss, coupling, VSWR and
directivity may not meet published specifications.
Overall ground is improved if a dense population of
plated through holes connect the top and bottom ground
layers of the PCB. This minimizes ground inductance
and improves ground continuity. Performance can also
be improved when grounded coplanar waveguide is used
as the transmission medium and a low loss dielectric is
used. All of the Xinger hybrid and directional couplers
are constructed from ceramic filled PTFE composites
which possess excellent electrical and mechanical
stability having X and Y thermal coefficient of expansion
(CTE) of 17 ppm/oC
When a surface mount hybrid coupler is mounted to a
printed circuit board, the primary concerns are; insuring
the RF pads of the device are in contact with the circuit
trace of the PCB and insuring the ground plane of neither
the component nor the PCB is in contact with the RF
signal. As long as the geometry of the unit fits onto the
layout of the circuit trace on the PCB, and the conditions
of the previous paragraph are followed, the coupler’s
performance is ensured. An example of how the PCB
footprint could look is shown below. In specific designs,
the 50lines need to be adjusted to the unique dielectric
coefficients and thicknesses as well as varying pick and
place equipment tolerances.
Pin 1
#1 Input
www.DataSheet4U.com
#2 Isolated
#3 -3dB,
-90o
#4 -3dB,
0o
Pin 2
Pin 3
Isolated -3dB,
-90o
Input
-3dB,
0o
-3dB,
Input
0o
-3dB, Isolated
-90o
Pin Configurations
Pin 4
-3dB,
0o
-3dB,
-90o
Isolated
Input
MOUNTING
In order for Xinger surface mount couplers to work
optimally, there must be 50transmission lines leading to
and from all of the RF ports. Also, there must be a very
good ground plane under the part to insure proper
electrical performance. If either of these two conditions
SUGGESTED FOOTPRINT
Page 3 of 3
Available on Tape and
Reel For Pick and
Place Manufacturing.
USA/Canada: (315) 432-8909
Toll Free:
(800) 544-2414
Europe:
+44 1705-232392










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