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Xinger |
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
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 50Ω transitions 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
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