Beijing Institute of Technology

Chongqing University

Chongqing University of Posts and Telecommunications

Chongqing Zongshen General Power Machine Co., Ltd.

Shandong Aerospace Electronic Technology Research Institute

No. 26 Research Institute of China Electronics Technology Group Corporation

Xi Wang

Lei Zhang

Huaiqiang Yu

Bin Yuan

Like Deng

Qi Wang

Gengxin Xie

Miaocheng Weng

Chuangxin Jiang

Taiyun Ding

Shiyi Jiang

Xiao Peng

Yi Huang

He Zhang

Hong Yang

Jinyi Ma

Zhe Zhang

Bin Cheng

Mingyan Jiang

Xiaojun Yang

Meirui Liu

Hongsheng Zhang

Xuan Zhou

Ting Liu

Yuanxun Zhang

Youwei Zhang

Weizhong Chen

The disclosure provides a method for assembling and interconnecting FBAR filter and an electronic device. The method includes constructing an equivalent circuit model of an assembled FBAR filter according to a circuit model of a filter chip and the grounding circuit of the FBAR filter; modeling, simulating and calculating the grounding circuit to extract parasitic parameters corresponding to the grounding pad and a grounding bond-wire of the grounding circuit, respectively; feedbacking the parasitic parameters back into the equivalent circuit model, and using the circuit simulation software to obtain an S parameter of the filter; adjusting the parasitic parameters of the grounding circuit to optimize an S parameter performance of the FBAR filter: obtaining an optimal assembly configuration of the FBAR filter to guide the assembly. The parasitic parameters include a parasitic inductance of the grounding bond-wire and a parasitic capacitance and parasitic inductance of the grounding pad.

Film bulk acoustic resonator filter assembling and interconnecting method and electronic device

The present invention relates to a layered semi-parallel LDPC decoder system having a single permutation network, and belongs to the field of decoder hardware design. The system comprises a layered decoding architecture of the single permutation network, a layered semi-parallel decoding architecture of the single permutation network, a pipeline design for layered semi-parallel decoding and a hardware framework of a layered semi-parallel LDPC decoder. The present invention removes a permutation network module between a check node and a variable node by modifying the cyclic shift value of each information block transferred from the variable node to the check node, i.e., the cyclic shift operation of the decoder can be completed through the single permutation network so as to reduce hardware resources of the decoder. A semi-parallel decoding structure is adopted, and meanwhile, a pipeline is added between half layers. Compared with a decoder with a layered full-parallel structure, a decoder with a semi-parallel structure has the degree of parallelism of a variable node equal to only half of the code length but can achieve ¾ of the throughput as well as reduce hardware resources by half.

Layered semi parallel LDPC decoder system having single permutation network

Disclosed is an environment forming apparatus suitable for biological cultivation in extraterrestrial space. The apparatus includes a shell and a biological cabin configured in an upper space of the shell. A light management system for importing light of biological growth from external world is configured in the upper space, a thermal management system for at least balancing a temperature of the upper space and a water supplying system and configured for providing water for creatures growth are both configured on the shell. The biological cabin and the like are set at the appropriate part of the shell, an environment which is relatively suitable for biological growth or cultivation can be created and simulated on an extraterrestrial star, a condition is provided for ecological cultivation of the extraterrestrial space, an ecosystem of the extraterrestrial space can be formed, and a smooth extraterrestrial space biological experiment process is guaranteed.

Environment forming apparatus suitable for biological cultivation in extraterrestial space

An oil and gas separation device for an internal combustion engine includes a first chamber, a second chamber, and a third chamber provided successively from bottom to top, wherein the first chamber is connected to the second chamber through a first gas channel. The second chamber is connected to the third chamber through a second gas channel. The third chamber is connected to a gas outlet pipe. A bottom of the first chamber is connected to an internal combustion engine body. A lower oil baffle plate is provided between the bottom of the first chamber and the internal combustion engine body. The first gas channel is longitudinally covered by the lower oil baffle plate. The oil and gas separation effect and speed can be improved by employing the oil and gas separation device for the internal combustion engine of the present disclosure.

Oil and gas separation device for internal combustion engine

Growing community of inventors

Chongqing, China

Xi Wang