I 2C interface circuit for 8051 singlechip is designed for the efficiency and performance of 8051 singlechip which communicate with I 2C bus, based on I 2C bus transform protocol The interface circuit is designed with VHDL language, compiled and simulated with MAXPLUSⅡ The download chip is EPM7128SLC8415
Stacked crystal film bulk acoustic wave filters (SCFBAF) have obvious advantages over other filters (such as ladder-type filters, coupled resonator filters, etc.), including low insertion loss, small size and high stop-band attenuation, working in super high operating frequencies, etc. This paper presents the design and simulation of a six layers of SCFBAF. Structure of SCFBAF is illustrated and properties of three kinds of piezoelectric materials (lead zirconate titanate, zinc oxide and aluminum nitride) are compared. Amplitude-frequency curves of SCFBAF with different piezoelectric materials and thicknesses are obtained by using ANSYS 11.0. Based on the simulation results, analyses of performances of SCFBAF are stated. Finally relationships among performance, thickness and materials are concluded. The research results are valuable for design, fabrication and measurement of next generation complex RF MEMS filters.
This paper introduce design and micro fabrication of a novel six supports shunt capacitive MEMS RF switch with Au/Parylene-C as structural material. This micro switch consists of a dual-layer actuator with 9.526 volts actuation voltage. This switch adopts novel six supports and double actuation electrodes. This special design can obtain good actuating properties, such as lower actuation voltage and more stable working states, and long lifetime etc. Due to complicated structure, the fabrication becomes more difficult. This paper focuses on the fabrication of the MEMS RF switch which can find its application in microwave and mobile communication device
Based on Intel′s embedded development board (StrongARM SA1110 CPU)and Kyocera 7 STN LCD, this paper describes the whole process of driving the LCD by using embedded Linux operating system
Touch-screen controller simplifies the control of touch-screen,but the controller uses serial communication,so the higher precision of the controller needs more time to obtain coordinate.In order to limit this time consuming,this paper uses an embedded system example based on StrongARM SA1100 to show one parallel communication hardware driver of resistance type touch-screen and the design method and procedure of the software about this hardware circuit.It is useful for OS.
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