Interlayer junction for EBG waveguide integrated with a power divider into two channels

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Abstract

An interlayer junction for three-row EBG waveguides integrated with a two-channel power divider was studied. It is shown that without additional matching such transitions are relatively narrow-band in terms of reflection coefficient in the frequency band 8…12 GHz. To expand the matching band, a modified transition with additional matching rods in both waveguide channels on the power divider layer is proposed. Using numerical analysis, it was found that due to this in the frequency band under study, it is possible to obtain a symmetrical matching curve with two well separated minima and with a matching level no worse than –20 dB in the central part of the range. It is shown that in the structure with matching rods, the operating frequency band by reflection coefficient is significantly expanded in comparison with the original structure.

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About the authors

S. E. Bankov

Institute of Radio Engineering and Electronics named after V.A. Kotelnikov RAS

Author for correspondence.
Email: sbankov@yandex.ru
Russian Federation, St. Mokhovaya, 11, building 7, Moscow, 125009

V. I. Kalinichev

Institute of Radio Engineering and Electronics named after V.A. Kotelnikov RAS

Email: sbankov@yandex.ru
Russian Federation, St. Mokhovaya, 11, building 7, Moscow, 125009

References

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Supplementary files

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2. Fig. 1. Schematic representations from above (a) and from the side (b) of an interlayer transition with power division into two channels on the upper layer with the designation of the main parameters; 1–3 are the port numbers.

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3. Fig. 2. HFSS model for numerical study of interlayer transition with power division into two channels on the upper layer: three-dimensional view (a) and side view

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4. Fig. 3. Frequency dependence of the reflection coefficient for N = 0.65 (1), 0.7 (2), 0.75 (3), 0.8 (4), 0.85 (5) and L1 = 6.5, L2 = 8.0.

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5. Fig. 4. Frequency dependence of the reflection coefficient for L1 = 6.0 (1), 6.5 (2), 7.0 (3), 7.5 (4) and L2 = 8, N = 0.7.

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6. Fig. 5. Frequency dependence of the reflection coefficient for different values ​​of L2 = 6.5 (1), 7.5 (2), 8.0 (3), 9.0 (4), 1.0 (5) and L1 = 6.5, N = 0.7.

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7. Fig. 6. Transition matching characteristics corresponding to the best combination of parameters for two cases: D2 = 2, D3 = 4, L1 = 6.5, L2 = 8, N = 0.7 (curve 1), D2 = 1, D3 = 2, L1 = 7, L2 = 8, N = 0.7 (curve 2), and P = 6, D1 = 2, h = 10, t = 1.

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8. Fig. 7. Model of the transition structure with additional matching rods on the top layer: (a) — general view; (b) — top view; (c) — side view; 1–3 — port numbers.

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9. Fig. 8. Frequency dependence of the reflection coefficient for Mx = 3.0 (1), 3.1 (2), 3.2 (3) and My = 1.6, N = 0.7, P = 6, D1 = 2, L1 = 6.5, L2 = 8.

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10. Fig. 9. Matching characteristic for Mx = 3.075 and My = 1.6, N = 0.7, P = 6, D1 = 2, L1 = 6.5, L2 = 8.

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11. Fig. 10. Frequency dependence of the reflection coefficient for N = 0.65 (1), 0.7 (2), 0.75 (3) and P = 6, D1 = 2, L1 = 6.5, L2 = 8, Mx = 3.075, My = 1.6.

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12. Fig. 11. Frequency dependence of the reflection coefficient for values ​​L1 = 6.0 (1), 6.5 (2), 7.0 (3) and L2 = 8.0, P = 6, D1 = 2, Mx = 3.075, My = 1.6.

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13. Fig. 12. Frequency dependence of the reflection coefficient for values ​​L2 = 7.5 (1), 8.0 (2), 8.5 (3) and L1 = 6.5, P = 6, D1 = 2, Mx = 3.075, My = 1.6.

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14. Fig. 13. Frequency dependence of the reflection coefficient for My = 1.55 and Mx = 3.0 (1), 3.1 (2), 3.2 (3), as well as N = 0.7, L1 = 6.5, L2 = 8, P = 6, D1 = 2.

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