A solid state broad band amplifier of terahertz radiation ~1.5–4 THz!, based on intersubband transitions of hot holes in p-Ge is demonstrated. The gain is investigated as a function of applied magnetic and electric fields by transmission measurements using a laser system with two p-Ge active crystals, when one operates as an oscillator and one as an amplifier. A peak gain higher than usually re...

EWEE include following parts: GUARD and Driven-Right-Leg (DLR) systems [2, 3, 6]. First system protects wire connections (on PCB, silver contacts with differential amplifier) against electromagnetic influence. The second provides better Common Mode Rejection Rate (CMRR) coefficient in range of 20-50dB higher. Another parts of system are: silver contacts [5], instrumentation amplifier with perma...

The paper proposes fourth order Butterworth complex filter for the Global Positioning System (GPS) receiver, which the center frequency of complex filter is 2MHz and bandwidth is 2 MHz. The operational amplifier (OPA) is designed as twostage fully differential OPA. The gain bandwidth (GBW) of operation amplifier reaches 300MHz, the gain of the DC is 58.3dB, the phase margin is 5 7  and the pow...

We report high output power and high-gain semiconductor optical amplifiers integrated on a heterogeneous silicon/III–V photonics platform. The devices produce 25 dB of unsaturated gain for the highest gain design, and 14 dBm of saturated output power for the highest output power design. The amplifier structure is also suitable for lasers, and can be readily integrated with a multitude of silico...

A CMOS low-voltage, wide-band continuous-time current amplifier is presented. Based on an open-loop topology, the circuit is composed by transresistance and transconductance stages built around triode-operating transistors. In addition to an extended dynamic range, the amplifier gain can be programmed within good accuracy by the rapport between the aspect-ratio of such transistors and tuning bi...

Low noise amplifier is the front end block of radio-frequency receiver system. Its design required various characteristics such as power gain, noise figure, insertion losses and power consumption. In this paper we have proposed a single stage low noise amplifier design with high gain and low noise using inductive source degeneration topology for frequency range of 3 GHz to 7 GHz and also use th...

Amplifiers employing positive or negative feedback are fundamental building blocks in electronic circuits. Negative feedback is employed to linearize amplifiers in order to reduce distortion of the input signal and improve amplifier bandwidth. Conversely, applying sufficient positive feedback to an amplifier results in an oscillator because an output signal occurs when no input signal is presen...

This paper presents a ultra wideband low noise amplifier for 6GHz Applications. This proposed LNA is the extension of inductively common source amplifier and in this design we used transistor multifingering techniques in order to reduce noise and improves gain. This LNA is simulated by using UMC .18um CMOS mixed signal/RF process in cadence virtuoso. In this design, used current source biasing,...

An ultra-wideband low noise amplifier for cognitive radio applications covering 50 MHz to 10 GHz is designed in a 65-nm CMOS technology. A three-stage dc-coupled common source amplifier with RC degeneration at the last stage optimizes the gain, linearity and output gain-phase balancing. Throughout the covered band, the simulated voltage gain is >23.3 dB whereas the noise figure is <3.4 dB. The ...

A 70-GHz broadband amplifier is realized in a 0.13-μm CMOS technology. By using five cascaded commonsource stages with the proposed asymmetric transformer peaking technique, the measured bandwidth and gain can reach 70.6 GHz and 10.3 dB respectively under a power consumption (PDC) of 79.5 mW. With miniaturized transformer design, the core area of the circuit is only ~ 0.05 mm. Compared with the...