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A circularly polarized (CP) antenna based on the complementary source technique is designed for 60-GHz applications. The proposed antenna is composed of a strip dipole, a slot, and a cavity, and it is realized by plated-through-hole and printed-circuit technologies. Experimental results show that the proposed antenna can present an overlapping bandwidth of 21.9% from 53.6 to 66.8 GHz, within which...
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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