70 GHz Test Cables0 pages

70 GHz Test Cables
Ultra Wide Band & Broadband Test Cables for
65, 67 & 70 GHz Applications
MegaPhase’s industry-leading test cable has been optimized for consistent and repeatable
performance through 70 GHz. This phase and amplitude stable test cable features 1.85mm
connectors, including connectors that mate directly with 1.85mm VNA ports. MegaPhase
70 GHz test cable products are built-to-order with any combination of 1.85mm connectors,
including our Factory Formed right angles. Available in lengths from 12 inches to 25 feet
(30 cm to 8 m).
Electrical Data

Cable Construction (cont’d)

Maximum Frequency:

70 GHz

Impedence:

50 Ω nominal

Propagation Velocity:

75% nominal

Time Delay:

1.23 ns/ft (4.04 ns/m)

Shielding Effectiveness:
-120 dB minimum (cable only)
Dielectric Withstanding
Voltage:
Capacitance:

3 kV at 60 Hz

24.4 pF/ft (80.1 pF/m)

Mechanical Data
Finished Outer Diameter:
TM70:
0.285 in (0.724 cm)
VN70:
0.625 in (1.588 cm)
Static Bend Radius:

1.5 in (3.81 cm)

Weight with Standard Jacket /Armor:
TM70:
0.05 lbs/ft (0.067 kg/m)
VN70:
0.18 lbs/ft (0.260 kg/m)
Crush Resistance:

250 lbs/linear in
(44.6 kg/linear cm)

Operating Temp. Range:
TM70:
-67 to 275º F (-55 to 135º C)
-76 to 248º F (-60 to 120º C)
VN70:
Above 185º F (85º C) use “T” designation
Cable Construction
Inner Conductor:
Dielectric:
Outer Conductor:

Solid Ag-plated Cu
PTFE Tape
Ag-plated Cu Strip/
Ag-plated Cu Flat Braid

Ruggedization: Metal Braid/Metal Conduit

Standard Finish:
TM70:
Polyolefin over Metallic Armor
VN70:
PET Braid over Metallic Armor
(a wide variety of other protective finishes
and armors available)
Specifications
Frequency
GHz
0.3
0.5
0.8
1.0
2.0
2.4
3.0
4.0
6.0
8.0
10.0
12.4
15.0
18.0
20.0
22.0
24.0
26.5
28.0
30.0
32.0
34.0
36.0
40.0
45.0
50.0
55.0
60.0
65.0
67.0
70.0

Attenuation

Band
UHF
L
S

C

X

Ku

K

Ka

O

V

db/ft

dB/m

Conn.
Loss dB

0.107
0.139
0.178
0.200
0.288
0.318
0.359
0.419
0.524
0.615
0.698
0.789
0.881
0.980
1.043
1.104
1.163
1.234
1.276
1.330
1.383
1.436
1.487
1.587
1.708
1.825
1.939
2.049
2.157
2.200
2.263

0.352
0.457
0.584
0.656
0.946
1.043
1.176
1.375
1.719
2.018
2.290
2.589
2.891
3.216
3.422
3.621
3.814
4.048
4.185
4.364
4.539
4.711
4.879
5.207
5.604
5.988
6.360
6.723
7.078
7.218
7.425

0.006
0.009
0.012
0.014
0.024
0.027
0.032
0.040
0.055
0.070
0.084
0.101
0.118
0.139
0.152
0.165
0.178
0.194
0.204
0.217
0.230
0.243
0.256
0.281
0.313
0.344
0.375
0.406
0.437
0.450
0.468

VSWR

1.10

1.15
1.20
1.25

1.30

1.35

1.40
1.45

1.50

1.60

Note: Typical Insertion Loss dB = (Attenuation)(Length) + 2(Conn. Loss)
Attenuation at any frequency = (0.19043 x √freq GHz) + (0.00957 x freq GHz)

Excellence in RF Interconnects
2098 West Main Street, Stroudsburg, PA 18360
Tel: 1-877-MegaPhase / 570-424-8400
Fax: 1-877-MegaFax / 570-424-6031
Email: fastquote@megaphase.com / Web: www.megaphase.com