COMPACT DIRECTIONAL COUPLERS USING COMBINATION OF MICROSTRIP AND SLOT LINES

Authors

  • S. N. Romanenko National University “Zaporizhzhia Polytechnic”, Zaporizhzhia
  • V. P. Dmitrenko National University “Zaporizhzhia Polytechnic”, Zaporizhzhia
  • A. V. Tverdenko National University “Zaporizhzhia Polytechnic”, Zaporizhzhia

DOI:

https://doi.org/10.15588/1607-3274-2019-4-1

Keywords:

Directional couplers, microstip and slot lines, microwave integrated circuits.

Abstract

Context. Transition of modern electronics to higher frequencies is directly related with an extremely important problem of
miniaturization of microwave integrated circuits. Conventional planar structures such as microstrip directional couplers have the
feature – their linear dimensions are defined by the wavelength in the transmission lines, so the use of such structures for
miniaturization of microwave integrated circuits becomes problematic.
Objective. Using 3D-structures on combinations of transmission lines to study frequency properties of two possible
implementations of quarter-wave directional couplers based on a combination of microstrip and slot transmission lines. Obtaining
simple analytical expressions for calculating the electrophysical parameters of these directional couplers and confirm their properties
by rigorous electrodynamic calculation.
Methods. An even-odd mode decomposition technique and the scattering matrix theory were used to derive simple analytical
formulas for calculating impedances of transmission line segments that define the topology of couplers considered.
Results. Electrodynamic modeling of proposed couplers with dispersion and losses in the lines showed that the proposed
constructions have better frequency characteristics in comparison with traditional three-branch microstrip directional couplers. It is
also shown that the considered designs of couplers have great potential in the selection of the desired electrical characteristics of
devices.
Conclusions. The presented compact couplers can find a broad range of applications in mobile communication systems for
decoupling of channels, division of power and frequency conversion. The method of transition from planar to three-dimensional
structures used in the development of directional couplers on combinations of transmission lines permits not only to create compact
devices with desired characteristics but also paves the way for significant decrease in the size and costs of the broad range of
electronic equipment utilizing such couplers.

Author Biographies

S. N. Romanenko, National University “Zaporizhzhia Polytechnic”, Zaporizhzhia

PhD, Associate Professor of department of Information Defense

V. P. Dmitrenko, National University “Zaporizhzhia Polytechnic”, Zaporizhzhia

PhD, Associate Professor of department of Radio engineering and Telecommunications

A. V. Tverdenko, National University “Zaporizhzhia Polytechnic”, Zaporizhzhia

Graduate student of department of Information Defense

References

Pozar D.M. Microwave engineering, 4-th edition. John Wiley&Sons, Inc., 2012, 756 p.

Romanenko S. N., Dmitrenko V. P., Voskoboynyk V. A. Calculation of microstrip directional couplers with

dispersion and losses in transmission lines, Radioelectronics. Informatics. Control, 2013, No. 2, pp. 32–36

Ishikawa T., Yamashita E. Characterization of Buried Microstrip Lines for Constructing Hygh-Density Microwave

Integrated Circuits, IEEE Trans. on MTT, 1996, Vol. 44, No. 7, pp. 1074–1080.

[Jeong Inho, Shin Seong-Ho, Go Ju-Hyun, Lee Joong-Soo, Nam Choong-Mo, Kim Dong-Wook, Kwon Young-Se

High-Performance Air-Gap Transmission Lines and Inductors for Millimeter-Wave Applications, IEEE Trans. on MTT, 2002, Vol. 50, No. 12, pp. 2850–2855

Kumar R., Chaudhary Kumar R. Modified microstrip-linefed rectangular dielectric resonator antenna coupled with

slotted ground plane for wideband circular polarization, Microwave and Optical Technology Letters, 2016, Vol. 58,

No. 1, pp. 206–210. DOI: 10.1002/mop.29523

Reddy D. P. Babu R. Design and Simulation of E-Slot Patch Antenna with Coaxial Feed for Multi Band Applications,

Journal of Telecommunications System & Management, 2017, Vol. 6, 4 р. – DOI: 10.4172/2167-0919.1000147

Falcone F., Lopetegi T., Laso M. A. G., Baena J. D., Bonache J., Marqués R., Martín F., Sorolla M. Babinet

Principle Applied to the Design of Metasurfaces and Metamaterials, Phys. Rev. Lett., 2004, Vol. 93, No. 19, pp. 197401-1 – 197401-4

Bonache J., Gil I., García-García J., Martín F. Novel Microstrip Bandpass Filters Based on Complementary Split-

Ring Resonators, IEEE Trans. on MTT, 2006, Vol. 54, No. 1, pp. 265–271.

Gil M., Bonache J., Gil I., García-García J., Martín F. Miniaturization of planar microwave circuits by using

resonant-type left-handed transmission lines, IET Microwave Antennas and Propagation, 2007, Vol. 1, pp. 73–79

Gvozdev V. I., Nefedov E. I. 3D microwave integrated circuits. Moscow, Science, Main edition of the physical and

mathematical literature, 1985, 256 p.

Niehenke Е. С., Pucel R. A., Bahl I. J. Microwave and millimeter-wave integrated circuits, IEEE Trans. on MTT,

, Vol. 50, No. 3, pp. 846–857

Nakajima Н., Hirota A., Yoneda N., Miyashita H. Microstrip line to waveguide transition with quarterwavelength

open stubs, IEICE Communications Express, 2017, Vol. 6, No. 6, pp. 309–313. DOI:10.1587/comex.2016SPL0029

Downloads

Published

2019-11-25

How to Cite

Romanenko, S. N., Dmitrenko, V. P., & Tverdenko, A. V. (2019). COMPACT DIRECTIONAL COUPLERS USING COMBINATION OF MICROSTRIP AND SLOT LINES. Radio Electronics, Computer Science, Control, (4), 7–13. https://doi.org/10.15588/1607-3274-2019-4-1

Issue

Section

Radio electronics and telecommunications

Most read articles by the same author(s)