A Novel Dual-Polarized Continuous Transverse Stub Antenna Based on Corrugated Waveguides—Part I: Principle of Operation and Design

Abstract

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A Novel Dual-Polarized Continuous Transverse Stub Antenna Based on Corrugated Waveguides—Part II: Experimental Demonstration

“…9b, respectively, were adopted. The heights of the output PPWs of the quasi-TEM and quasi-TE 1 beamformers are equal to the parameters h T EM and h T E of the input CPPW of the corporate-feed network [1]. Each transition includes a right-angle bend with a mitered corner which is tuned to gradually transform the input PPW modes into CPPW modes.…”

“…In this subsection, the simulated scanning performance of the two complete antenna systems are compared with the results obtained for the stand-alone dual-mode CTS array described in [1]. This comparison allows one to assess the impact of beamformers and related transitions (see Section III-A) on the radiation patterns and gain.…”

“…The results for the stand-alone antenna are found by exciting the input of the CPPW feed network (see port T1_P1 in Fig. 13 of [1]) with the simulated field distributions at the output of the corresponding pillbox coupler, i.e. the aperture field considered in Section II-D. On the other hand, the data relative to the full antenna systems are obtained from full-wave simulations.…”

“…In Part I [1] of this two-part paper, a novel dual-polarized parallel-fed CTS antenna architecture has been introduced. It comprises a single radiating aperture (an array of long slots) and a dual-mode corporate-feed network based on CPPWs.…”

“…Measurements prove that the dual-polarized CTS antenna works between 29 GHz and 32 GHz achieving a crosspolarization discrimination (XPD) higher than 24 dB for both polarizations. Although the dual-mode CTS array was optimized for broadside radiation [1], good scanning performance are demonstrated in a field of view of about 45 • between 29 GHz and 32 GHz.…”