In this paper, analysis, simulation and design of a distributed amplifier (DA) with 0.13µm CMOS technology in the frequency range of 3-40 GHz is presented. Gain cell is a current reused circuit which is optimum in gain, noise figure, bandwidth and also power dissipation. To improve the noise performance in the frequency range of interest, a T-matching low pass filter LC network which is utilize...

Putting Power in the Antenna Figure 2 is the block diagram of an experimental single-band 36 dB gain 5 W linear amplifier that may be easily constructed using whatever output device is available. Two noteworthy differences between Figure 2 and other commonly published circuits are the use of a resistive attenuator and low-pass filter between the driver and final stage, and the floating ground a...

iii Summary This master thesis describes the development of a new type RF PA and upconverter combination. Instead of the normally used voltage steering the amplifier uses charge steering. The parasitic capacitances of the MOSFET in combination with using charge steering form a feedback network that linearizes the amplifier. The developed device is a switching amplifier. For good behavior it use...

We used a terahertz (THz) quantum cascade laser (QCL) as an integrated injection seeded source and amplifier for THz time-domain spectroscopy. A THz input pulse is generated inside a QCL by illuminating the laser facet with a near-IR pulse from a femtosecond laser and amplified using gain switching. The THz output from the QCL is found to saturate upon increasing the amplitude of the THz input ...

A new CMOS PCM channel fiiter is described, which includes transmit and receive filters on a single die. This chip displays an idle-channel noise of typically O dBrnCO, a POWeIsupply rejection ratio of 40-50 dB at 1 kHz, and a fully operational power dissipation of only 35 mW, making it very cost effective in telecommunication switching systems. The design of this chip, including architectural,...

An Efficient Supply Modulator for Linear Wideband RF Power Amplifiers. (August 2011) Richard Turkson, B.Sc., Kwame Nkrumah University of Science and Technology Chair of Advisory Committee: Dr. Jose Silva-Martinez Radio Frequency (RF) Power Amplifiers are responsible for a considerable amount of the power consumption in the entire transmitter-receiver (transceiver) of modern communication system...

The service evolution and the rapid increase in traffic levels fuel the interest toward switching paradigms enabling the fast allocation of Wavelength Division Multiplexing WDM channels in an on demand fashion with fine granularities (microsecond scales). For this reason, in the last years, different optical switching paradigms have been proposed (Sabella et al., 2000): optical-packet switching...

A complete procedure for the design of W-band low noise amplifier in MMIC technology is presented. The design is based on a simultaneously power and noise matched technique. For implementing the method, scalable bilateral transistor model parameters should be first extracted. The model is also used for transmission line utilized in the amplifier circuit. In the presented method, input/output ma...

Decreasing the Internet power consumption is a challenging issue. Optical transport networks employing the wavelength division multiplexing (WDM) technique have been identified as energy efficient solutions to face this issue, considering the expected high increase of Internet traffic. The authors study the energy efficiency of a recently-proposed switching technique for transport networks, the...