In the CAN bus, mistakes in bit timing will lead to serious decline in bus performance. How to deal with the bit timing of CAN bus communication decided whether the CAN controller can receive or transmit data correctl...
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ISBN:
(纸本)9781424467372
In the CAN bus, mistakes in bit timing will lead to serious decline in bus performance. How to deal with the bit timing of CAN bus communication decided whether the CAN controller can receive or transmit data correctly. According to bus protocol, bit synchronization will fix bit errors resulting from improper setting in many cases. This paper illustrated the structure of nominal bit time and the principle of bit synchronization, gave an optimized method of nominal bit time of CAN2.0 protocol, that the four non-overlapping segments of traditional nominal bit time is simplified to 3 non-overlapping segments, and on this basis, proposed a design method of bit timing processor of CAN bus based on the synchronized state machine. It also provides programmable time segments to compensate for the propagation delay times and phase shifts, and gave simulation and verification of the design. The results show that the design work which obeys the CAN2.0 protocol, can more easily deal with the CAN bus communication bit timing, realized the control of CAN bus protocol on the bit timing and bit synchronization, and better optimizes the CAN network.
Interpolation is the main bottleneck in AVS real-time high definition video encoder for its high memory bandwidth and large calculation complexity caused by the new coding features of variable block size and 4-tap fil...
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This research used low molecular surface modifiers, and observed that chemisorptions took place through the formation of a bond between silver surface and an adsorbed molecule, which improved the dispersion of silver ...
This research used low molecular surface modifiers, and observed that chemisorptions took place through the formation of a bond between silver surface and an adsorbed molecule, which improved the dispersion of silver flakes in the organic resin. Several different functionalizers, such as thioglycolic acid, silane and di-acid, were used to functionalize the silver surface. Results of shear viscosity, bulk resistivity etc. showed that by using these low molecular organic functionalizers, isotropic conductive adhesives (ICAs) with lower shear viscosity and better electrical conductivity at high silver fillers content were obtained. The adipic acid had the greatest effect on the rheological and electrical property of ICAs, so its weight percentage in silver flakes was also optimized; ICAs displayed the maximum electrical conductivity when there was 0.5 wt% of silver flakes.
In recent years, organic light-emitting diodes (OLEDs) for the application of flat panel displays (FPDs) have been attracting many researchers. Blue OLEDs are the potential light source to make full color FPDs by colo...
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Salient object segmentation is an important technique for many content based applications. This paper presents an unsupervised salient object segmentation method under the graph cut optimization framework. First, we e...
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This paper presents a 2.4GHz fully integrated power amplifier based on 0.18μm SiGe BiCMOS technology for wireless local area network applications [1]. The power amplifier shows a 1 dB compression output power of 22.1...
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ISBN:
(纸本)9781424467372
This paper presents a 2.4GHz fully integrated power amplifier based on 0.18μm SiGe BiCMOS technology for wireless local area network applications [1]. The power amplifier shows a 1 dB compression output power of 22.19dBm at an input power of 0.135dBm. A temperature-insensitive bias circuit is used in this PA design to improve the amplifier linearity. The total fabricated die size is about 1.5mm×1.2mm. The designed PA based on SiGe BiCMOS technology demonstrates a competitive linearity performance compared with GaAs, when considering the factors of cost and process complexity.
This paper presents the ASIC design and implementation of digital baseband system for UHF RFID reader based on EPC Global C1G2/ISO 18000-6c protocol. The digital baseband system consists of two parts: transmitter and ...
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ISBN:
(纸本)9781424467372
This paper presents the ASIC design and implementation of digital baseband system for UHF RFID reader based on EPC Global C1G2/ISO 18000-6c protocol. The digital baseband system consists of two parts: transmitter and receiver, which inculing encoding module, decoding module, channel filers, CRC chenk module, control module and a SPI module. It is described in verilog HDL in RTL level, with Design Complier for synthesizing, PT for static timing analyzing and Astro for physical design. The die is fabricated using IBM 130nm 8-layer-metal RF cmos process successfully, which size is 3 mm × 3mm, the power consumption is around 6.7mW. It can be applied in the research of single-chip UHF RFID reader.
This paper presents a 2.4GHz monolithic Class E power amplifier based on Grace 0.18um SiGe BiCMOS technology. It has a two-stage structure and adopts small DC feed inductors and on-chip matching networks. Without any ...
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ISBN:
(纸本)9781424467372
This paper presents a 2.4GHz monolithic Class E power amplifier based on Grace 0.18um SiGe BiCMOS technology. It has a two-stage structure and adopts small DC feed inductors and on-chip matching networks. Without any off-chip components, the power amplifier achieves maximum output power of 22.4dBm. and the PAE is 33% with 2V supply. After optimizing the component parameter, the input and output terminals are both well matched to baseband and antenna respectively. With EER or ET technology this switch-mode amplifier can realize linear amplification, resulting in impressive high efficient in future communication system.
ZnO:Ga (GZO) transparent conductive thin film was deposited on p-GaN acting as the current spreading layer, but it leads to a large contact barrier because of the formation of Schottky contact. However, ohmic contact ...
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ZnO:Ga (GZO) transparent conductive thin film was deposited on p-GaN acting as the current spreading layer, but it leads to a large contact barrier because of the formation of Schottky contact. However, ohmic contact is of great importance to powered LED. In order to decrease the contact barrier, HCl and NaOH treatment of the p-GaN surface and annealing were employed in this work. The effects of different chemical treatment and annealing on p-GaN/GZO contact property were studied. It is obvious that solutions of alkaline treatment of p-GaN surface can decrease the interfacial barrier, which led to ohmic contact, and the barrier can be lightly increased by annealing.
We present an unequal decoding power allocation (UDPA) approach for minimization of the receiver power consumption subject to a given quality of service (QoS), by exploiting data partitioning and turbo decoding. W...
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We present an unequal decoding power allocation (UDPA) approach for minimization of the receiver power consumption subject to a given quality of service (QoS), by exploiting data partitioning and turbo decoding. We assign unequal decoding power of forward error correction (FEC) to data partitions with different priority by jointly considering the source coding, channel coding and receiver power consumption. The proposed scheme is applied to H.264 video over additive white Gaussion noise (AWGN) channel, and achieves excellent tradeoff between video delivery quality and power consumption, and yields significant power saving compared with the conventional equal decoding power allocation (EDPA) approach in wireless video transmission.
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