A very low voltage 9th order linear phase baseband switched capacitor (SC) filter has been designed to be used as part of a cellular GSM (Global System Mobile) receiver. A Gaussian-to-6dB filter of the order of seven is chosen and a second order function is added to reduce the group delay variations around. The filter uses a fully differential topology to increase the dynamic range and reduce t...

N-Phthaloyl GABA was administrated daily (50 mg/Kg body weight-i.p) to Wistar rats for 21 days and circadian rhythms of thiobarbituric acid reactive substances (TBARS) and antioxidants such as reduced glutathione (GSH), catalase (CAT) and superoxide dismutase (SOD) were studied under constant light (LL) conditions. Delayed acrophase of TBARS and advanced acrophase of antioxidants (GSH, CAT and ...

Abstract The stability of the entire base station depends on synchronization station’s clock. clock management chip 8A34002 supports SyncE Ethernet and IEEE 1588. In this architecture, GPS receiver, SSI, master/slave switching device all emit PPS/TOD signals. signals are input into FPGA, which outputs one signal. signal enters in design scheme, DPLL provides filtering clock-following output. 8A...

With more than 70 navigation satellites around the Earth, global navigation satellite systems (GNSS) users are fascinated to use multiple constellations to enhance positioning availability, accuracy, integrity, continuity, and robustness. As the Russian Global’naya Navigatsionnaya Sputnikovaya Sistema (GLONASS) has fully restored its constellation, not only does a combination of GLONASS and the...

Clock distribution devices create and distribute multiple copies of a master clock to a variety of integrated circuits (ICs). These devices have single-ended or differential clock inputs and provide multiple outputs (single ended or differential), which are typically divided and delayed versions of the input clock. Low-phase-noise Crystal Oscillators (XOs) are commonly used to drive clock distr...