In this paper, based on the coupled-mode and carrier rate equations, a dynamic model and numerical analysis of a multi quantum well (MQW) chirped distributed feedback semiconductor optical amplifier (DFB-SOA)  all-optical flip-flop is precisely derived. We have analyzed the effects of strains of QW and MQW and cross phase modulation (XPM) on the dynamic response, and rise and fall times of the ...

Author(s): Nadgir, A; Thurston, R; Larsen, KA; Shivaram, N; Brister, MM; Slaughter, DS | Abstract: We describe a software implementation of multi-channel, multi-frequency Lock-in Amplifier (SILIA) to extract modulated signals from noisy data distributed over multiple channels arbitrary number and size. This emulates the functionality lock-in amplifier in post-processing step following acquisiti...

In this work, we analyze the effects of an inter-stage capacitor located between the power stage input and the driver stage output on the overall efficiency of a RF CMOS power amplifier and on gate-drain reliability problems. To verify the analyzed effects, we designed a RF CMOS power amplifier with a center frequency of 1.85GHz. Class-D amplifiers with a feedback resistor are used as driver st...

We demonstrate optical packet clock recovery with locking in less than 700 ps (25 bits) using a novel device which is compatible with other monolithic components. Regenerative capabilities are analyzed using bit

A method for reducing the two-tone third-order intermodulation products arising from two carrier frequencies at 1.95 and 2.00 GHz is demonstrated in a traveling wave tube-distributed amplifier. The optimum amplitude and phase of an injected second harmonic and the resulting intermodulation suppression of up to 24.2 dB are examined for fundamental drive levels approaching saturation.

The use of so-called “composite left/right-handed transmission lines” in the design of distributed amplifiers is discussed using a simple model for the active device. The simplified analysis performed herein shows that it is possible to modify the frequency response of forward and reverse power gains, a significant development which could lead to innovative distributed amplifier designs. © 2006...

This paper presents a new negative resistance (NR) network which is designed to compensate losses in a distributed amplifier (CDA). The byproduct of the new NR network in the CDA is significant improvement of bandwidth (~20%). The simplicity of the NR network makes it amenable to MMIC technology and for other applications too.

This paper presents a four-stage CMOS distributed amplifier (DA) design implemented in standard 0.18 μm CMOS technology. The proposed design eliminates the need for transmission line capacitors and, consequently, uses significantly smaller spiral inductors compared with the previous designs. Using the minimum size inductor, the bandwidth of the amplifiers is extended, and the quality factors of...