JUNFLON MWX
®
JUNFLON
®
Microwave Coaxial Cable Assemblies
MWX2 Series
Flexible cable assemblies for measuring instruments
Cable assemblies developed for intensive use in microwave/milli
meter-wave measurements, with high phase stability against
bending (Continuous operating temperature range from -30 to
+85 ℃).
Flexibility and low repulsion reduce loads on measured objects.
Four cable types are available for max. 26.5, 40, 50, 67 GHz use.
Insertion loss (dB/m)
Power rating (W)
MWX2 SERIES
How to select
1.Simple criteria for connector selection
●Choose
a suitable connector for your measuring
instrument.
●The
smaller the connector, the higher the maximum
operating frequency.
●The
larger the connector, the higher the power rating.
2.Power rating
The diagram to the below shows the relationship
between frequency and power rating. The values are
calculated at 25 ℃ and at sea level. The power rating
will need to be corrected for different ambient
temperatures and altitude. Power ratings may decrease,
depending on the connector selected.
MWX2 series typical insertion loss
7
6
5
4
3
2
1
0
0
10
20
30
40
50
MWX221
MWX241
MWX251
MWX261
Power rating of MWX2 series at sea level
1000
MWX221
MWX241
MWX251
MWX261
100
10
60 67
1
0.1
1
10
100
Frequency (GHz)
Frequency (GHz)
＊The above figures are measured values for reference only.
Connector compatibility
Cable type
MWX221
26.5 GH
½
MWX221 (armored type)
MWX241 (armored type)
40.0 GH
½
MWX241 (non-armored type, custom-made)
MWX251 (armored type)
MWX261 (armored type)
50.0 GH
½
67.0 GHz
●
●
●
●
●
●
●
●
●
●
●
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●
●
●
●
●
Compatible connector
Cable maximum
26.5 GHz
40.0 GHz
50.0 GHz 67.0 GHz
operating frequency
18.5 GHz 18.0 GHz
SMA (m)
N (m)
3.5 mm (m)
2.92 mm (m)
(GHz)
(m)
swept
N (m)
swept
.5 mm (m) mm (f)
swept
2.92 mm (m) 2.92 mm (f)
swept
.4 mm (m) 2.4 mm (f) .85 mm (m) .85 mm (f)
SMA
3
3.5
2
1
1
●
●
●
●
●
●
●
＊Armored
type: Armored with a protection sheath to reduce damage caused by mechanical movement.
22
GENERAL ASSEMBLY
INFORMATION
Cable design
Non-armored type
MWX0 SERIES
Center conductor
Silver plated
copper
Dielectric
Low density
PTFE
1st outer conductor
Silver plated
copper tape
2nd outer conductor
Silver plated
copper braid
Sheath
PVC
MWX1 SERIES
Armored type
MWX2 SERIES
Center conductor
Silver plated
copper
Dielectric
Low density
PTFE
1st outer conductor 2nd outer conductor
Silver plated
copper tape
Silver plated
copper braid
Sheath
PVC
Armored
SUS spring
Sheath
PVC
Flexibility data
Test method
Test cable
MWX221, MWX021, MWX121
a
MWX3 SERIES
Test condition
temperature：24 ℃
test load：454 g
diameter of bar：φ16 mm
A test cable measuring 1,000 mm in length was formed into a circle with an internal diameter of 300
mm. Both ends were overlapped and secured with tape measuring 50 mm in width. The circularly formed
test cable was then suspended, with the overlapping end section at the top and a weight positioned at
the bottom. Circularity was measured after five seconds. (Circularity is expressed as the ratio a/b.)
b
MWX4,5 SERIES
load
Test result
Test cable
MWX221
MWX021
MWX121
sample 1
1.887
1.532
1.552
sample ２
2.049
1.404
1.564
sample ３
2.011
1.482
1.595
average
1.982
1.473
1.570
TECHNICAL DATA
＊The above figures are measured values for reference only.
23
MWX2 SERIES
MWX221
DC
∼
26.5 GHz
Basic Cable Properties
Electrical properties
Maximum operating frequency
Characteristic impedance
Capacitance (typ.)
Propagation delay (typ.)
Shortening coefficient of wavelength (typ.)
Higher mode frequency (typ.)
VSWR (per connector/both ends of assy.)
26.5 GH
½
50±1 Ω
88 pF/½
4.4 ns/½
76 ％
27.5 GHz
1.153/1.33
Mechanical properties
Cable outer diameter
Minimum bending radius (inner side)
Cable mass (typ.)
Continuous operating temperature range
Armored side pressure
Standard type
6.0 ½½
20 mm
64 g/½
-30∼+85 ℃
−
Armored type
12.5 ½½
20 mm
212 g/½
-30∼+85 ℃
196 N/cm
Connector
SMA (m) straight (Code AMS)
：
Reference plane
SMA (m) swept (Code AMW)
(＊1)
：
Reference plane
N (m) straight (Code NMS)
：
Reference plane
N (m) swept (Code NMW)
(＊1)
：
Reference plane
Maximum operating frequency 18.5 GH
：
½
Mass:10 g
Maximum operating frequency 18.5 GH½
：
Mass:17 g
Maximum operating frequency 18.0 GH
：
½
Mass:38 g
Maximum operating frequency 18.0 GH½
：
Mass:46 g
3.5 mm (½) straight (Code DMS)
：
3.5 mm (f) straight (Code DFS)
：
3.5 mm (½) swept (Code DMW)
(＊1)
：
Reference plane
Reference plane
Reference plane
Maximum operating frequency 26.5 GH
：
½
Mass:11 g
Maximum operating frequency 26.5 GH
：
½
Mass:10 g
Maximum operating frequency 26.5 GH½
：
Mass:18 g
(＊1)
Swept is not available
to armored type.
Order form example
●Example
1
Assembly length：1000 mm
Connector Ⅰ：SMA (m) straight
Connector Ⅱ 3.5 mm (m) straight
：
Catalog No.
：
MWX221-01000AMSDMS
(See P.32“Connector combination codes”
)
●Example
2 MWX221 Armored type
Assembly length：1500 mm
Connector Ⅰ：N (m) straight
Connector Ⅱ N (m) straight
：
Catalog No.
：
MWX221-01500NMSNMS/B
24
GENERAL ASSEMBLY
INFORMATION
JUNFLON
®
MWX series are fully complied with
RoHS directive including connectors.
MWX221 Technical Data
Cable typical insertion loss
8.0
7.0
1m
3m
5m
MWX0 SERIES
Insertion loss (dB)
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
MWX1 SERIES
5
10
15
20
25
26.5
Frequency (GHz)
●Typical
insertion loss
（0.0077×f
（GHz）
+0.2304× （GHz）
f
+0.02） （m）
×L
●Maximum
insertion loss
（0.0077×f
（GHz）
+0.2304× （GHz）
f
+0.02）
×1.12×L m）
（
MWX2 SERIES
Static bending data
(insertion loss, phase)
Bending radius: 20 mm
0.5
10
before test
during test
after test
Insertion loss change (dB)
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
5
10
15
20
8
Phase change (°
)
6
4
2
0
before test
during test
after test
MWX3 SERIES
-2
-4
-6
-8
26.5
-10
0
5
10
15
20
26.5
Frequency (GHz)
Frequency (GHz)
＊The cable was wrapped 360°
around a mandrel.
MWX221 Phase change vs. temperature Option
60
50
5GHz
10GHz
15GHz
20GHz
25GHz
MWX4,5 SERIES
●We
have the capacity to deliver products with
matched phases for customers who require this
characteristic.
Phase change (°
/m)
40
30
20
10
0
-10
TECHNICAL DATA
-40
-20
0
20
40
60
80
100
Temperature (℃)
＊The above figures are measured values for reference only.
25
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