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At first, this paper analyzes the basic structure and hardware characteristics of the FIR digital filter, and then a design method of the FIR filter is discussed on the basis of the FIR filter structure. It is a method that is based on FPGA, draws the coefficient by Matlab and adopts the pipeline to implete the FIR digital filter. The article focuses on the introduction of the overall framework of...
The paper provides a structure of a wide tuning center frequency range VCO (Voltage Controlled Oscillator). The VCO is completed on the base of oscillation theory and negative resistance structure. This circuit has a high stability of output voltage amplitude and can oscillate in a great range of frequencies.
This paper describes the design of a differential class-E PA for Bluetooth applications in 0.18 mum CMOS technology with load mismatch protection and power control features. The breakdown induced by load mismatch can be avoided by attenuating the RF power to the final stage during over voltage conditions. Power control is realized by means of ldquoopen looprdquo techniques to regulate the power supply...
Study on the nanosized ceramic material of ZrO 2 which has usually been used as electronic ceramics, function ceramics, structure ceramics and so on. The material of ZrO 2 was made by low-temperature super alkaline condition. The powder was detected by XRD, and the result showed that the material was pure ZrO 2 . According to the Scherer formula computation, the ZrO 2 ...
Change original PNG software decode, update decode algorithm, implement hardware Huffman decoder, speed up PNG decode process. This paper discuss the implementation of Huffman decoder in ASIC based on the feature of table and compressed data. The result under the test of EDA tools and Matlab shows the Huffman decoder for PNG decode without distortion.
In order to realize a wide-band and low phase noise PLL for digital tuner, the desired tuning range of the PLL describes in this paper is divided into 8 sections according to different L/C tank circuits changed by channel selection, then a coarse-tuning loop is designed in the system to automatically select the suitable one of the 8 tuning curves which have overlapped part besides a fine-tuning loop...
Based on the principle of subthreshold voltage references, a voltage reference circuitry with high PSRR is proposed in this work. In HSPICE the simulation result shows that the PSRR performance of the circuit is very good as they are 53 dB at 100 KHz, 35 dB at 100 MHz and the max is close to 92 dB, the reference voltage is 706.92plusmn1.16 mV and the average temperature coefficient is 12.9 ppm/degC...
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