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Urrently, the most successful learning models in computer vision are based on learning successive representations followed by a decision layer. This is usually actualized through feedforward multilayer neural networks, e.g. ConvNets, where each layer forms one of such successive representations. However, an alternative that can achieve the same goal is a feedback based approach in which the representation...
This paper presents the design and analysis of a high performance receiver front-end for various X-band applications. The proposed circuits employ transformer feedback and resonant-coupled networks (RCNs) for the low-noise amplifier (LNA). The mixer design uses a double-balanced topology to achieve low power and also low noise characteristics. The IF post-amplifier adopts the Cherry-Hooper based variable...
A high performance Ka-band down-converter front-end for satellite communications in 0.18-µm BiCMOS is demonstrated. By using the dual-transformer-feedback design, the low-noise amplifier (LNA) can achieve low noise figure (NF) and wide matching bandwidth simultaneously. Also, the GMboosted mixer together with the IF amplifier with adaptive bias and 3D inductor provides high gain and high linearity...
A 9 GHz low phase noise class-C voltage controlled oscillator (VCOs) with an 8-shaped transformer configuration using 0.18-μm CMOS technology is presented. By utilizing the 8-shaped transformer, the proposed class-C VCO can be operated at reduced dc power consumption while maintaining circuit performance in terms of phase noise and limiting EMC (Electro-Magnetic Compatibility) issues when the symmetrical...
A low-power sub-harmonic receiver front-end covering an RF frequency range of 18–21GHz with a converted IF range of 50–1550 MHz is demonstrated. The transformer-based inductive coupled resonators at the input of low-noise amplifier provide a wideband signal transformation and impedance matching effectively. Also, several circuit techniques such as GM boosted and 3D-inductors are employed for the LNA...
A fully integrated receiver front-end for very small aperture terminal (VSAT) applications in a 0.18-μm SiGe BiCMOS technology is demonstrated. To satisfy different specifications of various applications, the proposed receiver can down-convert the input signal in a wide RF range from 9.8 to 14.8 GHz to the IF frequency at L-band (950-2150MHz) with four differences LO frequencies. The noise figure...
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