Design and construction of an ultrawideband backward wave directional coupler

Hrobak M, Sterns M, Seler E, Schramm M, Schmidt LP (2012)


Publication Language: English

Publication Type: Journal article

Publication year: 2012

Journal

Publisher: Iet

Book Volume: 6

Pages Range: 1048

Journal Issue: 9

DOI: 10.1049/iet-map.2011.0471

Abstract

In this study the design and construction of an ultrawideband backward wave directional coupler is presented. The symmetric, non-uniform coupler covers the frequency range from 2 to 50 GHz with an average coupling of 16.6 2.4 dB while establishing directivity values greater than 10 dB from 10 MHz to 33.8 GHz and 8 dB up to 48.4 GHz. The design is based on coupled microstrip lines suitable for integration into planar front end modules of modern measurement systems. To account for the dispersive behaviour of such waveguides, wiggly-line technique is utilised. Accurate extraction of the waveguide frequency-dependent distributed equivalent circuit parameters is done by 2D finite element electromagnetic field (EM) simulation. To balance out the remaining mistuning appropriate scaling parameters are introduced. The influence of common manufacturing and assembly tolerances on the device performance is analysed. Measurement results of the synthesised coupler with planar matched isolated port are presented.

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How to cite

APA:

Hrobak, M., Sterns, M., Seler, E., Schramm, M., & Schmidt, L.-P. (2012). Design and construction of an ultrawideband backward wave directional coupler. IET Microwaves Antennas & Propagation, 6(9), 1048. https://dx.doi.org/10.1049/iet-map.2011.0471

MLA:

Hrobak, Michael, et al. "Design and construction of an ultrawideband backward wave directional coupler." IET Microwaves Antennas & Propagation 6.9 (2012): 1048.

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