H. J. Ng

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This paper presents a wideband and low phase noise millimeter-wave (mm-wave) voltage-controlled oscillator (VCO) fabricated in 130 nm BiCMOS technology. The output signal can sweep from 29.6 to 35.5 GHz, which corresponds to 18.1% tuning range. The LC-tank of the VCO consists of two coupled inductors and a binary weighted varactor bank. The secondary(More)
In this paper, a fractional-N phase-locked loop (PLL) with an integrated chirp generation circuit block for frequency-modulated continuous-wave (FMCW) radar systems is reported. The circuit is composed of a push-push voltage controlled oscillator (VCO), a feedback divider including pre-scaler and programmable divider stages, a phase-frequency detector(More)
An integrated frequency sixtupler in SiGe BiCMOS technology is presented. It is composed of a nonlinear differential amplifier used as a frequency tripler followed by a Gilbert mixer used as a frequency doubler. The 3 dB bandwidth of the circuit is 15GHz in between 222 – 237GHz range with peak output power of −4 dBm for 0dBm input power. The(More)
This paper presents the design and comparison of three <inline-formula> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula>-band sensing oscillators in the standard 0.25-<inline-formula> <tex-math notation="LaTeX">$\mu \text{m}$ </tex-math></inline-formula> SiGe:C BiCMOS technology featuring an open stub, a shunt stub, and a combination of both. The(More)
This paper describes an integrated frequency multiplier, implemented as a Gilbert cell based frequency doubler in a 130 nm SiGe BiCMOS technology. The circuit demonstrates a 3 dB bandwidth of 97&#x2013;134GHz with peak output power of 1 dBm for 1 dBm input power. The fundamental suppression, measured at the single-ended output, is better than 21 dBc while(More)
This paper presents a fully integrated millimeter-wave phase-locked loop (PLL) frequency synthesizer fabricated in 130nm BiCMOS technology. It comprises a self-buffered voltage controlled oscillator (VCO) tunable from 29.4 to 33.0 GHz, which corresponds to 11.5% tuning range. The VCO contains a programmable binary weighted varactor bank for phase noise(More)
This paper presents both differential receiver and transmitter front-end modules for a 120 GHz phased array transceiver for the use in FMCW radar applications. A Gilbert-cell based vector modulator type I/Q phase shifter is accompanied by integrated LNA / PA in RX / TX channels fabricated with a 0.13&#x00B5;m SiGe BiCMOS technology with(More)
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