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Reference Air Lines - 7mm Connectors

Reference Air Lines - 7mm Connectors

Features
 Beadless 7mm connectors
 Virtually reflectionless
 Mates with Standard Precision 7mm Connectors

Description

The 2653 series are beadless, virtually reflectionless, coaxial 7mm reference air lines with spring-loaded tips on the ends of the inner conductor to mate with standard 7mm connectors.

7mm Reference Air Line Kits

The 2653K is a kit consisting of six reference air lines from the chart of available models, provided in an attractive foam-lined wooden instrument case.

1 Impedance = 49.987 ohms based on nominal dimensions and tolerances of the conductors, and the equation: Z = 59.939 Loge D/d, D = I.D. outer conductor, d = O.D. inner conductor.

2 A beadless 7mm connector that mates with standard precision 7mm connectors.

3 Frequencies at which the electrical length is an odd multiple of a 1/4 avelength were n is zero or an integer.
Specifications
Frequency Range:
DC - 18 GHz
VSWR:
DC to 3.0<1.002+0.001ƒ (GHz)
3.0 to 18.0 < 1.005 maximum
Characteristic Impedance:
50 ± 0.05 ohms1 where
skin depth is negligible
Electrical Length:
See Chart
Accuracy of Elect. Length:
± 0.005cm
Connector:
LPC7 2

Available Models

Model

Electrical Length
(cm)

Odd 1/4-Wavelength Frequency (GHz) 3
2653S30
29.969
(2n + 1) 0.25
2653S20
19.980
(2n + 1) 0.375
2653S15
14.983
(2n + 1) 0.50
2653S10
9.988
(2n + 1) 0.75
2653S9.2
9.239
(2n + 1) 0.81
2653S7.5
7.493
(2n + 1) 1.00
26536
5.993
(2n + 1) 1.25
26535
4.994
(2n + 1) 1.50
26534
3.994
(2n + 1) 1.875
26533
2.9969
(2n + 1) 2.50

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