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Mismatch Standard Sets - Two-Port and Air LIne
Two-Port Mismatch Sets Description Mismatch air line sets are two-port, 1/4 wavelength VSWR standards consisting of coaxial air lines employing a precision outer conductor with beadless connectors and a set of inner conductors with increasing diameters. These produce accurately known reflection coefficents which are directly calculable from and traceable to air line dimensions 1 . Air line standard sets are extremely stable and easy to use for a variety of applications. The simple geometry allows direct calculation of reflection, loss, transfer and group delay characteristics, making them ideally suited for checking the performance and accuracy of network analyzers. The sets described here utilize beadless connectors and rely on the mating connectors for center conductor support.
Air Line Mismatch Sets The 2454A and 2654A are for use in coaxial systems employing 14mm and 7mm connectors, respectively. The air line connectors are beadless and rely on the mating connector for center conductor support. Each set consists of: A) One (1) outer conductor. B) Five (5) inner conductors (see specification for corresponding VSWRs). C) A foam-lined, wooden instrument case for protection and storage. Specifications Frequency Range . . . . . . . . See chart Nominal Impedance . . . . . . . . See chart for actual nominal impedance for 1.00 VSWR Mismatch Values (VSWR) . . . . . . . . 1.00, 1.10, 1.25, 1.50, 2.00 (based on actual nominal impedance) Electrical Length . . . . . . . . 7.495cm Odd 1/4 Wavelength Frequencies . . . . . . . . 1, 3, 5, 7, 9, 11, 13, 15, 17 GHz Available Models Model Line Size Connector Frequency Range (GHz) Actual Nominal Impedance (ohm) 2454A 14mm LPC14 2 DC - 8.5 50.001 2654A 7mm LPC7 3 DC - 18.0 49.987 1 Beatty, R.W., "Calculated and Measured S11, S21, and Group Delay for Simple Types of Coaxial and Rectangular Waveguide 2-port Standards", NBS Technical Note No. 657, Dec. 1974. 2 Beadless 14mm connector that mates with GR900BT. 3 Beadless 7mm connector that mates with standard 7mm. Copyright 2006 by Maury Microwave Corporation. All rights reserved.