Abstract Routing is a key issue in Wireless Sensor Networks due to the network consisting of a large number of selforganization sensor nodes with limited energy, processing capability and storage. Lifecycle of network is one of the crucial issues which are influenced by routing protocol greatly in WSN. Therefore many researchers focus on the routing protocol and how to improve it. Rumor Routing Protocol... Routing is a key issue in Wireless Sensor Networks due to the network consisting of a large number of selforganization sensor nodes with limited energy, processing capability and storage. Lifecycle of network is one of the crucial issues which are influenced by routing protocol greatly in WSN. Therefore many researchers focus on the routing protocol and how to improve it. Rumor Routing Protocol is one of the classical routing protocol based on query, which is developed from Directed Diffusion Routing Protocol. In this paper, we investigate routing protocol based on query and propose a new routing protocol, in which we use clustering idea to control the data volume to transmit, and localization technology and rumor routing protocol optimized by intersection angle theory to reduce the energy consumption of data transmission. Results of simulation experiments indicate that the new routing protocol can reduce the energy consumption of the network and extend the lifecycle of the network. Read More Read Less

Abstract In this paper, a high gain and low noise 3.1-10.6 GHz ultra wideband (UWB) CMOS low noise amplifier (LNA) with common gate (CG) topology was designed, which adopted a T-match input network of 50© matching in the required band. The power reduction is achieved by the current reused technique. The proposed LNA was fabricated using TSMC 130 nm CMOS technology. The simulation results... In this paper, a high gain and low noise 3.1-10.6 GHz ultra wideband (UWB) CMOS low noise amplifier (LNA) with common gate (CG) topology was designed, which adopted a T-match input network of 50© matching in the required band. The power reduction is achieved by the current reused technique. The proposed LNA was fabricated using TSMC 130 nm CMOS technology. The simulation results demonstrated a power gain of 21.603 dB with a ripple of ± 1.02 dB, achieved noise figure less than 3.168 dB, an input return loss less than -15.576 dB and output return loss less than -20 dB. With a power supply of 1.2V, the proposed circuit consumes 5.82 mW. Read More Read Less