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This paper presents a wideband (WB) reconfigurable down-conversion mixer for multi-standard wireless receivers. The proposed mixer is re-configurable between active mixer and passive mixer modes. Reconfigurability is made through switching the input signal between gate and source terminal of input transistors and enabling/disabling the transimpedance stage at the output. The CMOS transmission gate...
This paper presents a low power reconfigurable narrowband, concurrent multiband, wideband multimode LNA for multi-standard applications. Subthreshold region biasing, quality factor aware impedance matching, component sharing between different modes are employed. Input matching is unbounded from other performance parameter. Proposed LNA works in narrowband mode at 1.8GHz, 2.1GHz and 2.4GHz, dualband...
In this paper, a subthreshold driven low power wide band Gilbert cell mixer in two different architectures is presented. The first is Common Source (CS) architecture with RC degeneration for bandwidth extension and capacitive cross coupling for gain boosting. Next is a conventional Common Gate architecture driven in weak inversion region for low power consumption. Both architectures are designed to...
In this paper, a transformer coupled noise cancellation technique for subthreshold Ultra Wide Band (UWB) Low Noise Amplifier (LNA) is presented. This introduces a novel noise cancellation technique with current reuse topology and transformer coupling for better noise and gain performance. Moreover power consumption is considerably reduced by biasing both (two) stages in subthreshold region. This circuit...
In this paper, a low power, noise-cancelling subthreshold Ultra ideband (UWB) Low Noise Amplifier (LNA) is presented. In this work subthreshold driven Common Gate (CG) input stage is modified to provide wideband input matching and a current reuse noise cancelling technique is introduced to improve noise performance. Additionally, substantial reduction in power consumption is obtained by driving the...
A novel wide band low power low noise amplifier using subthreshold technique is presented in this paper. This LNA built with Common-Gate (CG) input stage for wide band input matching and a Common Source (CS) - Common Gate (CG) cascode stage for gain boosting. Power reduction is achieved by driving the front end CG transistor in sub-threshold region and input matching is done by LC circuit instead...
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