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A proof of concept 3D printed membrane-supported microstrip patch antenna is presented. The simulated results yield return losses of 8, 17 and 11 dB at 1.85 GHz, 3.5 GHz and 4.3 GHz, respectively. The maximum realized gain is 9.5 dBi at 1.85 GHz for theta-pol at phi=0° and phi-pol at phi=90°, with cross-pol more than 20dB down. The fabrication challenges include printing a 350 μm-thick VeroWhite membrane...
A proof of concept 3D printed Yagi-Uda antenna for automotive radar at 77 GHz and 3D printed fabrication plan are presented. The initial design on Connex VeroWhite yields a return loss of 12.7 dB at 73.2 GHz, and 8.7 dBi phi-pol realized gain in the endfire direction, with cross-pol 20 dB down. Two 3D printed fabrication plans are discussed. The fabricated antenna and measured results will be presented...
A proof of concept 3D printed planar inverted F antenna (PIFA) using Aerosol Jet Additive Manufacturing technology is presented. The cellphone handset PIFA presented in [1] for the 800 and 1900 MHz bands is scaled to 36.5 and 74.5 GHz. The simulated results yield return losses of 17.8 and 20.4 dB at 36.5 and 74.5 GHz, respectively. The maximum theta-pol realized gain is 2 dBi at both frequencies,...
A self-structuring antenna (SSA) has been developed to enable scalable and rapidly upgradable phased array systems over broad tunable bandwidths. The SSAs are of a patch antenna design, utilizing shorting pins distributed throughout the patch face to control current distribution through switch activation. This paper describes the SSA concept, the design approach for this application, and presents...
Design of a plasma time delay unit (TDU) for microwave waveguides is proposed. The TDU comprises a base structure with two parallel grounded metal plates and an ultra-low loss dielectric strip waveguide. To tune the phase delay of the TDU, we surround the dielectric strip waveguide with plasma of tunable density and length. Based on the dispersion diagram at W-band, plasma-induced phase delay of up...
In this paper, a compact square ring antenna is presented, which shows dual-frequency filtering characteristics. The antenna is designed for the 5.2 and 5.8 GHz wireless frequencies with between-band gain suppression of approximately 18 dB at 5.45 GHz. The dual-frequency response is realized through a multilayer design, where the antenna uses triangular perturbation elements within the square ring...
This paper presents the effect of slot positions on the bandwidth and the response of a micromachined high-Q X-Band resonator formed by a micromachined cavity. Theory and experiment indicate that a narrow-band, low-loss response can be achieved by changing the placement of the slots relative to the center of the cavity. As a result, narrow-band, low-loss, monolithic filters with small weight and planar...
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