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In this article, we discuss the increasing interdependence of societies, focusing specifically on issues of systemic instability and fragility generated by the new and unprecedented level of connectedness and complexity resulting from globalization. We define the global system as a set of tightly coupled interactions that allow for the continued flow of information, capital, goods, services, and people. Using the general concepts of globality, complexity, networks, and the nature of risk, we analyze case studies of infrastructure, trade, finance, the environment, and epidemiology to develop empirical support for the concept of global systemic risk. We seek to identify and describe the sources and nature of such risks and methods of thinking about risks that may inform future academic research and policy-making decisions.

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In this paper, a novel compact patch antenna is presented for wireless communication applications. The proposed antenna has three T‐shaped patches (TSP) connected to the feed line and crossed I‐slots are etched on the ground plane to operate a single resonating band with low interference. The TSP antenna operating frequency is 10.98 GHz with an impedance bandwidth of 850 MHz, a reflection coefficient of −38.11 dB, and a gain of 6.44 dBi. The radiation patterns are also presented for E‐plane and H‐plane. The proposed TSP antenna model is fabricated and tested. Good agreement is achieved with simulated and measured results.

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