Analytical Solutions to Characteristic Impedance and Losses of Inverted Microstrip Gap Waveguide Based on Variational Method

This paper initially introduces analytical solutions to newly invented inverted microstrip gap waveguide (IMGW). By applying the classical variational method the characteristic impedance, dielectric loss, and conductor loss of the IMGW are obtained. The calculated characteristic impedance and losses of IMGWs with the present analytical method have been verified by commercial software CST. Furthermore, we have theoretically proved that the total loss of electromagnetic energy in the IMGW is much lower than that of covered microstrip line in millimeter waves (mmWs). Thereby, the IMGW has big advantages over covered microstrip lines for high-gain, high-efficiency array antennas in mmWs.

[1]  Ke Wu,et al.  On the losses in substrate-integrated waveguides and cavities , 2009, International Journal of Microwave and Wireless Technologies.

[2]  Per-Simon Kildal,et al.  Three metamaterial-based gap waveguides between parallel metal plates for mm/submm waves , 2009, 2009 3rd European Conference on Antennas and Propagation.

[3]  J. Swinburne.  Electromagnetic Theory , 1894, Nature.

[4]  Ashraf Uz Zaman,et al.  Gap Waveguide PMC Packaging for Improved Isolation of Circuit Components in High-Frequency Microwave Modules , 2014, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[5]  R. Mittra,et al.  Spectral-Domain Approach for Calculating the Dispersion Characteristics of Microstrip Lines (Short Papers) , 1973 .

[6]  R. E. Collin,et al.  Microstrip Dispersion Including Anisotropic Substrates , 1987 .

[7]  S. Cohn.  Shielded Coupled-Strip Transmission Line , 1955 .

[8]  P. Kildal,et al.  Wide-Band Slot Antenna Arrays With Single-Layer Corporate-Feed Network in Ridge Gap Waveguide Technology , 2014, IEEE Transactions on Antennas and Propagation.

[9]  Jian Yang,et al.  Microstrip-Ridge Gap Waveguide–Study of Losses, Bends, and Transition to WR-15 , 2014, IEEE Transactions on Microwave Theory and Techniques.

[10]  R. E. Collin.  The Characteristic Impedance of a Slotted Coaxial Line , 1956 .

[11]  Theodore S. Rappaport,et al.  State of the Art in 60-GHz Integrated Circuits and Systems for Wireless Communications , 2011, Proceedings of the IEEE.

[12]  Yong Fan,et al.  A Wideband High-Gain High-Efficiency Hybrid Integrated Plate Array Antenna for V-Band Inter-Satellite Links , 2015, IEEE Transactions on Antennas and Propagation.

[13]  E. Yamashita,et al.  Strip Line with Rectangular Outer Conductor and Three Dielectric Layers , 1970 .

[14]  K. Wu,et al.  Integrated microstrip and rectangular waveguide in planar form , 2001, IEEE Microwave and Wireless Components Letters.

[15]  A. A. Kishk,et al.  Narrow-Band Microwave Filter Using High-Q Groove Gap Waveguide Resonators With Manufacturing Flexibility and No Sidewalls , 2012, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[16]  R. Collin.  Field theory of guided waves , 1960 .

[17]  H. A. Wheeler.  Transmission-Line Properties of Parallel Strips Separated by a Dielectric Sheet , 1965 .

[18]  Per-Simon Kildal,et al.  Corporate-Fed Planar 60-GHz Slot Array Made of Three Unconnected Metal Layers Using AMC Pin Surface for the Gap Waveguide , 2016, IEEE Antennas and Wireless Propagation Letters.

[19]  P.-S. Kildal,et al.  Experimental Demonstration of Local Quasi-TEM Gap Modes in Single-Hard-Wall Waveguides , 2009, IEEE Microwave and Wireless Components Letters.

[20]  E. Kuester,et al.  Theory of dispersion in microstrip of arbitrary width , 1980 .

[21]  Per-Simon Kildal,et al.  Artificially soft and hard surfaces in electromagnetics , 1990 .

[22]  K. Foster.  The characteristic impedance and phase velocity of high-q triplate line , 1958 .

[23]  R. H. Jansen,et al.  The Spectral-Domain Approach for Microwave Integrated Circuits , 1985 .

[24]  Ashraf Uz Zaman,et al.  Design and Fabrication of a High-Gain 60-GHz Corrugated Slot Antenna Array With Ridge Gap Waveguide Distribution Layer , 2016, IEEE Transactions on Antennas and Propagation.

[25]  Per-Simon Kildal,et al.  Optimizing the numerical port for inverted microstrip gap waveguide in full-wave simulators , 2016, 2016 10th European Conference on Antennas and Propagation (EuCAP).

[26]  E. Rajo-Iglesias,et al.  Local Metamaterial-Based Waveguides in Gaps Between Parallel Metal Plates , 2009, IEEE Antennas and Wireless Propagation Letters.

[27]  Gorjan Alagic,et al.  #p , 2019, Quantum information & computation.

[28]  D. Park.  Planar Transmission Lines , 1955 .

[29]  Abbas Vosoogh,et al.  A V-Band Inverted Microstrip Gap Waveguide End-Coupled Bandpass Filter , 2016, IEEE Microwave and Wireless Components Letters.

[30]  Abbas Vosoogh,et al.  Design and Fabrication of a High-Gain 60-GHz Cavity-Backed Slot Antenna Array Fed by Inverted Microstrip Gap Waveguide , 2017, IEEE Transactions on Antennas and Propagation.

[31]  Morteza Rezaee,et al.  V-band groove gap waveguide diplexer , 2015, 2015 9th European Conference on Antennas and Propagation (EuCAP).

[32]  C. Balanis.  Advanced Engineering Electromagnetics , 1989 .

[33]  Per-Simon Kildal,et al.  Resemblance between gap waveguides and hollow waveguides , 2013 .

[34]  R. Mittra,et al.  Variational Method for the Analysis of Microstrip Lines , 1968 .

[35]  Per-Simon Kildal,et al.  Artificially soft and hard surfaces in electromagnetics and their application to antenna design , 1988, 1993 23rd European Microwave Conference.

[36]  T. Itoh.  Spectral Domain Immitance Approach for Dispersion Characteristics of Generalized Printed Transmission Lines , 1980 .