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A new two-dimensional oscillator array-based injection-locked frequency divider is proposed. Instead of using the conventional analogue tuning technique or the one-dimensional delay chain, a two-dimensional array is implemented to digitally and precisely control the total delay in the oscillator core. This makes it possible to achieve a programmable delay, hence attaining potential programmable division...
This paper presents the concept and design of a wideband merged LNA and mixer covering the frequency range from 2GHz to 10GHz using a standard 0.18-μ m CMOS technology. Gm-boosting and current bleeding techniques are adopted to make the proposed single stage merged LNA and mixer topology suitable for high conversion gain, low noise and low power consumption operation. A proposed current peaking technique...
This paper presents a 0.9GHz-10GHz Ultra Wideband Low Noise Amplifier (LNA) designed for software-defined-radios (SDR). Capacitive cross coupling (CCC) is used at both input stage and cascade stage for wideband input impedance matching and small noise figure (NF). A combination of inductor peaking load and series inductor between the cascade stages of LNA is employed for a flat gain and enhanced input...
This paper presents a group-selected (GS) and gain controllable (GC) active mixer designed for ultra-wide-band (UWB) receiver. The double-balanced Gilbert-type configuration, current bleeding technique and resonating technique for tail capacitance are incorporated in the proposed mixer. A switched capacitance network (SCN) is used to control the resonant frequency of the tail capacitance for the group...
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