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A CMOS RF digitally programmable gain amplifier, covering various terrestrial mobile Digital TV standards (DMB, ISDB-T, and DVB-H) is implemented. 13 dB IIP3 improvement is attained without losing out on other performance criteria like gain, NF, CMRR, etc. at similar power consumption. This is achieved by applying a newly proposed differential circuit gm�(More)
A UHF mobile single chip RFID reader is implemented in 0.18 mum CMOS process. Developed IC achieves DA output power of 3 dBm, <i>OIP</i>3 of 14.8 dBm, phase noise of -100 dBc/Hz at 100 kHz offset, noise figure of 35.5 dB for talk mode, 6.2 dB for listen before talk (LBT) mode, and current consumption of 108 mA from a 1.8 V supply. With an external PA, Tx(More)
Trust based approaches have been widely used to counter insider attacks in wireless sensor networks because traditional cryptography-based security mechanisms such as authentication and authorization are not effective against such attacks. A trust model, which is the core component of a trust mechanism, provides a quantitative way to evaluate the(More)
A low power high linear transmitter for mobile WiBro and WiMAX is developed. The transmitter is fabricated in a 0.18 mum 1P6M CMOS process for low power characteristics and SoC compatibility. To achieve high linearity performance with low power consumption, the transmitter employs new linearization methods. Linear transconductor is used for the transmitter(More)
Low power CMOS RF digitally programmable gain amplifiers for dual-band (Band-III and L-Band) DAB/T-DMB receiver IC are implemented using 0.18 µ µ µ µm CMOS process. For a stable operation among large interference situation, it is required to have wide gain range and fine resolution in RF domain. In order to meet such requirements, various programmable gain(More)
  • Youngho Cho, Choongman Lee, +4 authors Young-Do Choy
  • 2016
This paper addresses a modeling and analysis methodology for investigating the stochastic harmonics and resonance concerns of wind power plants (WPPs). Wideband harmonics from modern wind turbines (WTs) are observed to be stochastic, associated with real power production, and they may adversely interact with the grid impedance and cause unexpected harmonic(More)
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