A Compact Diplexer for Circularly Polarized 20/30 GHz SIW-Antennas

Sieganschin, Anton; Jaschke, Thomas; Jacob, Arne F.

doi:10.1109/ims30576.2020.9223900

Cited by 7 publications

(1 citation statement)

References 14 publications

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“…One is usually based on optimizing an error function, which is a time-consuming process [5,6], and the other is analytical methods based on the design of two separate filters and a coupling matrix [7,8]. The fabrication methods of diplexers are based on printed circuit technology [7][8][9][10][11] and waveguides [12,13]. In [10], an input reflectionless low-pass filter was presented, which consists of a reflective network implemented with a microstrip resonator and a resistive termination, and in [8], a switchable diplexer was presented by using pin diodes.…”

Section: Introductionmentioning

confidence: 99%

A Novel Surface Wave Diplexer Based on Tensor Impedance Surfaces

Mighani¹

2022

PIER C

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In this paper, a new Surface Wave (SW) diplexer in frequency bands of 11.6 GHz and 19.3 GHz is presented based on the frequency variations of the refractive angle when an SW enters from a Scalar Impedance Sheet (SIS) to a Tensor Impedance Sheet (TIS). In this structure, a SIS has been placed alongside a TIS, and using three launchers, SW is excited and received on them. To achieve an SW diplexer, the structure is designed in a way that the refractive angle changes in the expected range when SW enters from SIS to TIS. Finally, the proposed structure is fabricated and measured by printed circuit technology. The measurement results at 11.6 GHz and 19.3 GHz show that this structure has 3.6 dB and 4.1 dB insertion losses and 33.5 dB and 37 dB isolations in the two bands, respectively. These measurements are in good agreement with mathematical modelling and simulations.

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