Huajiang Zhang

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A wide-band harmonic rejection mixer for TV tuners with an improved design algorithm is fabricated in 65-nm CMOS process. A more realistic mathematical formula is derived to calculate harmonic rejection performance. The third and fifth order harmonic rejection ratio calculation, based on the new proposed equations, precisely predicts simulation results. A(More)
In the current study, we focused on the mechanism underlying starch flocculation by the sweet potato sour liquid. The traditional microbial techniques and 16S rDNA sequencing revealed that Lactobacillus was dominant flocculating microorganism in sour liquid. In total, 86 bacteria, 20 yeasts, and 10 molds were isolated from the sour liquid and only eight(More)
BACKGROUND Chymosin is an important industrial enzyme widely used in cheese manufacturing. Kluyveromyces lactis is a promising host strain for expression of the chymosin gene. However, only low yields of chymosin (80 U mL(-1) in shake flask culture) have been obtained using K. lactis GG799. The aim of this study was to increase the amount of recombinant(More)
For compact integration of 13.56MHz NFC functionality in mobile devices, a small planar loop antenna is a necessity. Active load modulation (ALM) is a commonly adopted technique to boost load modulation amplitude to overcome weak inductive coupling in small antennas. However, due to the challenges of phase synchronization, ALM is mainly limited to low data(More)
Mixer is one of the significant components of the radio frequency transceiver that translate baseband signal into RF and vice versa. In this paper, 2.4 GHz double balanced Gilbert Cell Mixer topology was simulated to study its important properties such as Conversion Gain, Linearity, Noise Figure and Port Isolation. Further, a band pass filter is added in to(More)
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