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Articles
by
Dongdong Liu |
Total Records (
2 ) for
Dongdong Liu |
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Wei Chen
,
Xiuqin Xu
,
Hui Xu
,
Ming Hong
,
Zhiyu Wang
,
Yongheng Shang
,
Dongdong Liu
,
Min Zhou
,
Zhengliang Huang
and
Faxin Yu
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This study presents the temporal Coupled-Mode Theory (CMT) analysis of a K-band
MMIC (Microwave Monolithic Integrated Circuit) bandpass filter with dual orthogonal
resonant modes. Two test methods are applied and compared in the filter response
measurement. The dimensions of the MMIC filter, whose chip size is 1.9×1.35
mm, are optimized based on the FEM (Finite Element Method) simulation assisted
temporal coupled-mode theory. As a two-port reciprocal system, the transmission
and reflection responses of the filter are deduced. GaAs MMIC IPD (Integrated
Passive Device) technology is applied for chip fabrication. The test results
using a probe station fit well with the simulation results. A testing fixture
is introduced to model the practical application scenario, whose measurement
results, after de-embedment, have shown consistency with the simulation and
the probe station test results. |
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Mengyao Su
,
Jiarui Liu
,
Hua Chen
,
Dongdong Liu
,
Min Zhou
,
Zhiyu Wang
,
Yongheng Shang
,
Zhengliang Huang
and
Faxin Yu
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This study presents a design of a highly reliable shift register
based on TSMC 0.18 μm process which can efficiently fight against the Single
Event Upset (SEU). A bilateral Power on Reset (POR) block, together with bit-line
segregation and tri-mode redundancy technologies are applied in this design
to comprehensively enhance the SEU hardening performance at both system level
and circuit level. Assisted by the theory of transient circuit analysis, the
shift registers SEU hardening performance is achieved from the aspects of both
schematic and layout. A current pulse which is used to emulate the SEU effect,
is injected in the circuit for verification. The result of simulation shows
great improvement of the SEU tolerance. With its high reliability and radiation
tolerance, the present shift register can be applied to CMOS chip designs in
the field of aerospace. |
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