In this paper, the effects of the delay caused by the frequency change in self-priming locking oscillators are investigated in the phase lock loops. Self-injected locking phenomena in oscillators are used to reduce phase noise and more sustainability. Instead of using an external signal in an intruder lock, part of the output signal itself is returned to the oscillator again. In this case, the time required to restore the circuit after the injection of the external frequency is important, especially when this oscillator is used in the shape of a phase lock loop. This delay has the ability to unstable the phase lock loop. In this paper, the stability requirements for phase locking loops with delayed oscillators are fully investigated and the results are validated by simulation. پرونده مقاله

Network- based warfare is known as the symbolic element of the Age Information War. The network-based approach has been built around information sharing, and this information sharing in the battle is possible through the networking of all elements on the battlefield. A coherent networking force improves the quality of information sharing and, as a result, survival and command speed, improves the efficiency of battlefield elements, saves time and resources, and adds value for combat capability. There are various levels, including the lowest level, that is, an infantry soldier, which ultimately results in an amazing increase in the effectiveness of combat operations. Recent developments in microelectronics, mechanics, and ergonomics, as well as the movement and return, the importance and emphasis from tanks and missiles to soldiers, have examined future soldier projects. Electronic science has led to the integration of small individuals with advanced technology equipment and infantry soldiers with advanced communication, command and control (C3) systems, or communications, command, control, computer and information (C4I). All this was to try to see the infantry soldier as a complete unit instead of a small part of the great force. Each country has its own special soldier project. Considering the importance of the subject, identifying the opportunities and threats facing the Iranian warrior is necessary. In this study, we will study the future soldier project in advanced and sensitive countries and focus on communication and Network- based systems. پرونده مقاله