In this letter, a multioctave voltage doubler rectifier using T-type matching network is demonstrated. The topology used to flatten the load impedance, which makes it easier achieve broadband impedance matching. for input design procedure of proposed provided and discussed. For validation, prototype fabricated, performance evaluated. measured results exhibit power conversion efficiency (PCE) mo...

This work presents a 2.4 GHz, reconfigurable RF Low Noise Amplifier (LNA) using on-chip peak detection and calibration, to mitigate the deleterious effects of process, voltage and temperature (PVT) variations. The LNA can reconfigure its input impedance matching, as well as its gain. On-chip detection of optimal input/output impedance matching is performed using an amplitude peak detector. The ...

This paper presents the design theory of conventional single-ended LNA and differential LNA based on CMOS technology. The design concepts give an useful indication to the design trade-offs associated with NF, gain and impedance matching. Four LNA’s have been designed using technological design rules of TSMC 0.18-μm CMOS technology and this work mainly proposed for IEEE 802.11a applications. Wit...

In order to reduce the size of a wireless system, we propose a design theory for the broadband impedance matching circuit which connects an electrically small antenna (ESA) to a semiconductor amplifier. We confirmed its validity for the case of connection between a small slot loop antenna with a small radiation resistance of Ra = 0.776Ω and a semiconductor amplifier with high input impedance of...

H. Nam, S. M. Wright Electrical Engineering, Texas A&M University, College Station, TX, United States INTRODUCTION: An RF power amplifier feeds power into a RF coil through matching networks and generates a transverse magnetic B1 field. In the conventional voltage source configuration, the matching networks ensure maximum power transfer between the RF amplifier and the coil. Assuming the coil i...

Integrative approaches to studying the coupled dynamics of skeletal muscles with their loads while under neural control have focused largely on questions pertaining to the postural and dynamical stability of animals and humans. Prior studies have focused on how the central nervous system actively modulates muscle mechanical impedance to generate and stabilize motion and posture. However, the qu...