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This paper proposes a compact, low-loss, and low cost phase shifter for mmWave applications. The basic idea is perturbing the propagation constant of a CPW line by its loading with a high dielectric constant BLT ceramic. The phase shift is sensitive to the air gap between the CPW and the BLT sample. For a sample with a length of 3mm, a phase shift of 170° at 30GHz is obtained while the average insertion...
A narrow focus ultra-wideband dielectric-filled antenna has been designed for the purpose of near-field breast cancer detection without the use of coupling media. Instead of immersing the antenna in a lossy liquid coupling medium, direct matching of the substrate and antenna to the biological tissue is proposed here. The proposed feed structure was designed on low-cost printed-circuit-board (PCB)...
The results of a prototype novel planar antenna providing dual-band performance for road-vehicle applications are reported. Multilayer stacked patches provide simultaneous RHCP polarization for GPS and vertically polarized low elevation coverage for 5.9 GHz DSRC operations. The results show good correlation between measurement and theory.
This paper presents extension of our efficient on-chip antenna structure for 60 GHZ and 77 GHz frequency bands using mainstream silicon technologies. The challenges are implementation of an efficient antenna while isolated from substrate and RF circuits on the same substrate on low resistivity silicon substrate. Two antenna designs for the above bands are presented. The radiation efficiency of more...
The substrate integrated waveguide (SIW) concept is proposed as a viable antenna feed operating at Ku-band. The efficiency obtained from integrating the feed technology with the antenna is comparable to the metallic waveguide feed, at, a much reduced cost and increased miniaturization capability. Results arc presented for a prototyped 2x4 subarray module, which exhibits a 16 dB gain.
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