This paper presented a modified efficient inductive powering link based on ASK modulator and proposed efficient classE power amplifier. The design presents the external part which is located outside the body to transfer power and data to the implanted devices such as implanted Microsystems to stimulate and monitoring the nerves and muscles. The system operated with low band frequency 10MHZ acco...

A wideband amplifier up to 50 GHz has been implemented in a 0.25 μm, 200 GHz f t SiGe BiCMOS technology. Die size was 0.7×0.73 mm. The two-stage design achieves more than 11 dB gain over the whole 20 to 50 GHz band. Gain maximum was 14.2 dB at 47.5 GHz. Noise figure was lower than 9 dB up to 34 GHz and a current of 30 mA was drawn from a 4 V supply. To the author’s best knowledge this is the hi...

An effective current scaling method with source degenerated resistors proposed in the design of Bulk-Driven Folded-Cascode (BDFC) amplifier. The transconductance of the amplifier significantly vary with the common mode voltage. A 0.5V efficient Band Pass Filter (BPF) using bulk driven Operational Trans conductance amplifier (OTA) is designed for detection of QRS complex in ECG signal 17Hz. A lo...

A current reused low-noise amplifier (LNA) with gain compensated to extend the bandwidth and is designed for ultra-wideband (UWB) wireless receiver. The design consists of two cascode common-source amplifier and an output buffer which is implemented in 0.18um RF CMOS process. The LNA gives 13.1dB gain; 9.1GHz 3dB bandwidth (3.1-12.2GHz) while consuming 13.9mW through a 1.8V supply. Over the 3.1...

Highly linear CMOS radio receivers increasingly exploit linear RF V-I conversion and passive down-mixing, followed by an OpAmp based Transimpedance Amplifier at baseband. Due to the finite OpAmp gain in wideband receivers operating with large signals, virtual ground is imperfect, inducing distortion currents. We propose to apply a negative conductance to cancel this distortion. In an RF receive...

A multistage operational transconductance amplifier with a feedforward compensation scheme which does not use Miller capacitors is introduced. The compensation scheme uses the positive phase shift of left-half-plane (LHP) zeroes caused by the feedforward path to cancel the negative phase shift of poles to achieve a good phase margin. A two-stage path increases further the low frequency gain whi...

Two high efficiency Ku-band pHEMT power amplifier MMICs are presented in this paper. A single stage, high efficiency amplifier provides a peak power added efficiency of 57.6% with 10.5 dB associated gain and 26.5 dBm output power into a 50Ω load at 14 GHz. Additionally, a dual stage, high gain amplifier provides a peak power added efficiency of 50.4% with 19.7 dB associated gain and 27.5 dBm ou...

Abstract The performance of a wireless communication system depends on amplifier’s nonlinearity. Adaptive feed-forward amplifier implementation for wideband communication system and a step by step design of power amplifier at 2.4 GHz are introduced. The Feedforward linearization and Adaptive feedforward technique is a well known power amplifier linearization method to reduce out-of band distort...

This paper introduces wideband low noise amplifier design for Long Term Evolution systems. The three-stage, cascade wideband low noise amplifier structure will be presented. The low noise amplifier (LNA) is design for uplink channels for LTE systems. The LNA is designed for LTE receiver front-end which operates in 700-1300 MHz frequency range, covering almost entire LTE uplink frequency band. W...

Abstract: The LInear amplification using Nonlinear Components (LINC) technique is a wellknown power amplifier linearization method to reduce adjacent channel interference in a nonconstant envelope modulation system. Its major drawback is the inherited sensitivity to gain and phase imbalances between the two amplifier branches. In this paper two novel adaptive fulldigital base band methods are d...