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We proposed a method to realize the fine frequency-tuning step using tiny capacitors instead of MIM capacitors for a digitally controlled oscillator (DCO). The tiny capacitors are realized by the coplanar transmission lines in a 6 metal layers (M6) foundry of 0.18 um CMOS technology. These transmission line based capacitors are designed by using electro-magnetic field simulator, and co-designed by...
We designed and fabricated electrically small antenna (ESA) with a coplanar transmission line-based matching circuit on a printed circuit board. The matching circuit is realized by applying band-pass filter (BPF). Moreover, we designed a dual band antenna by connecting two ESAs with BPF-based duplexer. Our proposed dual band antenna is designed and simulated by using commercial three-dimensional electro...
We designed an electrically small antenna (ESA) with coplanar waveguide (CPW) matching circuit. Matching circuit is realized by using interdigital gap and transmission line. Our ESA has one-sided directivity for IMS band application. By using and controlling the length of floating metal layer on the bottom side, we can realize the one-sided radiation on the thinner substrate than that of the standard...
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