the low noise amplifier is the key part for front-end device of the receiver in the GPS. A 1.8V 0.18um CMOS LNA for GPS applications has been designed. Two kinds of low noise amplifier (LNA) for single-end cascade structure and differential cascade structure respectively are presented in this paper. Cadence software is used to optimize the two circuits. It provides a series of good results in N...

This paper presents the designing of a fully differential folded cascode operational transconductance amplifier (OTA) with common mode feedback circuit (CMFB). The designed OTA is operated in sub-threshold region to reduce the power consumption. The simulation is carried out in CADENCE environment using 150nm CMOS. The simulation result shows the DC gain of 82 dB with UGBW of 768 KHz, CMRR of 1...

The properties of a differential transconductance amplifier coupled with a four channel measurement system are exploited in order to reach a very high sensitivity in current noise measurements. In particular, it is demonstrated that, in proper conditions, the noise contributions coming from the active and passive devices that make up the transresistance amplifier can be virtually eliminated. Mo...

This paper presents a new architecture of class D audio amplifier with 0.4 W output power and 95% efficiency with an 8 ohm load. This class D uses a pulse width modulation scheme that eliminates the output filter. It operates with a 2.4 V to 5V supply voltage. The fully differential class-D audio amplifier is implemented with a TSMC 0.13-um 2P4M CMOS process, and the chip area is 325 x 300 um2....

This paper presents a new CMOS fully differential second-generation current conveyor (FDCCII). The proposed FDCCII is based on a fully differential difference transconductor as an input stage and two class AB output stages. Besides the proposed FDCCII circuit is operating at supply voltages of ± 1.5 V, it has a total standby current of 380 μA. The application of the FDCCII to realize variable g...

Abstract Wearabl smart devices have become an important method to monitor people’s health. This research work aims offer a relatively optimum solution amplify the biomedical signal in case of wearable devices. is done by using single-stage amplifier and Operational Transimpedance Amplifier (OTA) stage. The OTA stage uses typical 2-stage topology, with first-stage differential pair, second commo...

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...

In present day society where communication technologies are advancing at spiral rate, the need for efficient integrated circuit design to transmit and receive signals at unlicensed frequency spectrum is inevitable. This study tries to shed new light on the latter topic by evaluating the issues associated with the design in advanced CMOS technologies of a critical RF building block, namely a sin...