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We have proposed to place an RF circuit and an antenna on each side of a silicon chip in the 60 GHz band, respectively, and to connect between them with low loss by a coaxial-line structure using a hole opening in the chip. In this paper, we fabricate a 2×2 circularly polarized patch array in an area of 5 mm square on a silicon chip and have coaxial-line connection with a separated quadrature oscillator...
In this paper, we design a dual-polarization corporate-feed waveguide 32×32-slot array antenna for 120 GHz band in order to increase the operating frequency band and the gain. As a result of the simulation by HFSS, the bandwidth for VSWR less than 1.5 at the design frequency of 125 GHz is 7.6% (S11) and 8.8% (S22), respectively. The isolation is more than 50 dB over the above bandwidth. The simulated...
Circularly-polarized 2-by-2 antenna arrays based on the complementary source concept are designed for millimeter-wave applications at 60 GHz. Each antenna element consists of a slot and an electric dipole. Energy is coupled from a microstrip feeding network to the slots. Each slot radiates and simultaneously excites the dipole, achieving a complementary source. Two arrays are presented to demonstrate...
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