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A Fully Integrated 26dBm Linearized RF Power Amplifier in 65nm CMOS Technology

In this paper, design and measurements of a fully integrated power amplifier (PA) are presented. The PA consists of two amplifying chains each having a driver and a power stage. A low loss on chip power combiner combines the outputs from two amplifying chains, and also performs impedance transformation and differential to single-ended conversion. To linearize the PA, the driver stage is biased in

A note on Isomorphism and Identity

This note argues that, insofar as contemporary mathematics is concerned, there is overwhelming evidence that if mathematical objects are structures, then isomorphism should not be taken as their identity condition. This goes against a common version of structuralism in the philosophical literature. Four areas are presented in which identifying isomorphic structures or objects leads to contradictio

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Iran is worried about the contagion effect of the Saudi military intervention in Yemen, that is, Tehran fears the experience, once successful, may be repeated elsewhere in the Middle East, particularly Syria, hence its stiff opposition and harsh reactions to it.

Pilot-scale cultivation of microalgae Chlorella sp. in municipal wastewater using an open pond raceway

Microalgae is one of the prominent sources for biodiesel production. Cultivation of a specific microalgae strain (chlorella sp.) in wastewater using a pilot-scale open pond raceway was studied. Daily measurement of the raceway parameters such as pH, optical density and dissolved oxygen indicated that growth phase prolonged for 15 days and pH of the culture stayed on 9.4 for the most part of the pe