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...

A new ripple feedback filter is presented for Analog/Digital mixed-mode amplifier (MMA) among audio applications. MMA is composed of two amplifiers: one is analog amplifier responsible for high fidelity and the other is digital switching amplifer in charge of high efficiency. To improve both total harmonic distortion (THD) and efficiency, passive RLC filter is needed at the output side of the d...

The paper deals with the numerical and experimental development of single stage radio frequency (RF) amplifier with high gain for 2.4GHz receiver front-ends. The work is motivated by the increasing demand of high-gain receiver amplifier in low-cost especially for wireless local area network (WLAN) application. Prior hardware realization and experimental characterization, the proposed amplifier ...

The Class-E power amplifier is widely used due to its high efficiency, resulting from switching at zero voltage and zero slope of the switch voltage. In this paper, we extend general analytical solutions for the Class-E power amplifier to the ideal single-ended Variable-Voltage Class-E (Class-Evv) power amplifier that switches at zero slope but not necessarily at zero voltage. The theory is ver...

The purpose of this paper is to present a complete design and analysis of new HMIC 3.5-4.5 GHz broadband balanced amplifier modules using microstrip technology. Two different modules are designed and analyzed. Each module is implemented in a single substrate. The first module used Lange couplers as power splitters and combiners while the second used branch couplers. The components of the module...

In this paper low power consumption amplifier is presented. Low power consumption amplifier is versatile demanded in modern technology, modern technology want such type of amplifier which gives low power consumption with less reflection, in this paper presented series and shunt feedback topology with pole zero compensation method for designing of low power consumption amplifier, Today the deman...

We present a high power, single-frequency fiber amplifier based on master oscillator power amplification (MOPA) chains in all-fiber configuration. A 1.5 meter long highly doped Yb fiber with absorption coefficient as high as 16 dB/m at the 975 nm wavelength is used for the main power amplifier, no special assistant stimulated Brillouin scattering (SBS) suppression approach is employed. The maxi...

In modern wireless communication systems it is required that the power amplifier could operate with high efficiency, high linearity, and low harmonic output level simultaneously. To increase efficiency of the power amplifier, a switching-mode Class E mode technique can be applied. This kind of a power amplifier requires an operation in saturation mode resulting in a poor linearity, and therefor...

Diode lasers have many benefits, but it is very hard to make diode lasers that have both high spectral purity and high intensity. In this masters thesis a diode laser amplifier with a gain of G=4 is constructed. The amplifier is a double-pass semiconductor laser amplifier and the active region is 100 ~m broad. The amplifier is operated at 793 nm using an external cavity diode laser as master la...