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A 3D packaging based 4-channel X-band receiver module is implemented using low temperature co-fired ceramic (LTCC) technology. A dual-mode X-band bandpass filter (BPF), an lumped-element branch-line coupler and an lumped BPF is proposed for the receiver module, respectively. The overall size of the module is only 54 mm × 60 mm × 1 mm. The measured gain parameter, noise figure (NF), image rejection...
This paper focuses on the signal modeling and character analysis in the passive radar system using global navigation satellite system (GNSS) satellites as illuminators of opportunity. The signal model derived from the GNSS tracking loop shows that it contains information of both the scatter coefficient and the signal Doppler. An experiment using metal board as target was carried out and the results...
It is recent researching hotspot to integrate multiuser detection with smart antenna for CDMA. In order to reduce the system complexity and manufacture cost, we must make a compromise between them. In this paper, the BER expressions of Rake receiver with parallel interference cancellation and antenna array in Rayleigh channels are derived for WCDMA. The impact of antenna number and cancellation stage...
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