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The paper presents bandpass filters (BPFs) using short-ended half-wavelength resonators for out-of-band rejection and their applications to a duplexer. BPFs with out-of-band rejection are provided. Finally, we propose and design the new duplexers consisting of the proposed BPFs. The results of this study lead us to the conclusion that our proposals about the BPF and the duplexer are useful for realizing...
The paper discusses a number of important considerations in the design of differential VCO known as -G/sub M/ LC-tank VCO in Si technologies. The availability of multiple interconnect layers, culminating in a thick electroplated Cu (bump) layer, has led to significant improvements in the Q-factor of tank circuit inductors. In addition, the use of symmetric differential inductor structures can result...
We have attempted to quantify the maximum number of wideband interference signals that can be sufficiently nulled under severe interference scenarios, using a tapped delay line beamformer with a fixed number of antenna elements (M). Evaluation of simulation results shows that for increasing the fractional bandwidth, more taps are needed, but to a certain limit. In addition, the results show that the...
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