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Shielded slow-wave coplanar waveguides are promising candidates for the development of miniaturized low-loss compact passive devices in millimeter-wave frequency band. In this paper, a high rejection notch based on a classical stub using a shielded slow-wave transmission line with high quality factor and slow-wave factor has been designed on a low-cost CMOS 0.35 μm technology, and characterized up...
In this paper, experimental results of a new compact high-quality-factor shielded transmission line implemented on a CMOS 0.35-μm technology are presented, with a very good agreement between measurement and simulations. Then, based on the measured transmission line geometry, 3D electromagnetic simulations are carried out to study the effect of the floating shield dimensions and derive some design...
Loading transmission lines by capacitors is an effective way of miniaturization. However, it exists generally a trade-off between miniaturization and performances. In this paper, a careful comparison is carried out between a loaded transmission line and an equivalent unloaded one. Results show that a high miniaturization percentage can be achieved (55%) on a low cost substrate, together with an improved...
This paper discusses the feasibility of using CMOS varactors in designing all-silicon pulse-compression nonlinear transmission lines (NLTLs). Six different varactor structures based on CMOS transistors are investigated, and are divided into two groups. One group, with a monotonic C(V) characteristic, can be used in single-edge pulse-compression NLTLs, while the other, having a non-monotonic C(V),...
This paper discusses the feasibility of using CMOS varactors in designing all-silicon pulse-compression nonlinear transmission lines (NLTLs). Six different varactor structures based on CMOS transistors are investigated, and are divided into two groups. One group, with a monotonic C(I) characteristic, can be used in single-edge pulse-compression NLTLs, while the other, having a non-monotonic C(I),...
In this paper, a miniaturized UWB bandpass filter using a hybrid lumped capacitors-distributed transmission lines topology is designed. The filter design rules are carried out and a filter is optimized for a 3 dB fractional bandwidth of 127 % with criteria of compacity, matching and selectivity. A sensitivity study versus critical parameters is also given. The filter length is reduced to 0.18lambda...
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