Hong Kong University of Science and Technology

Abstract This work presents a 14GHz ring-based 3rd-order fractional-N PLL with 164fsrms jitter and a 100MHz reference. A sub-sampling DLL is cascaded in the type-II PLL output for extra phase-noise and supply-noise suppr

Switzerland, 5SynSense, Ningbo, China 1 4 Abstract SpikeRAM is a high efficiency (48.1pW/Synapse/Bit) memory-centric neuromorphic system with perception, computing and on-chip learning, achieving 464M synapses and 8.28mW

Abstract This paper presents a 40Gb/s 1-to-N VCSEL driver using 150nm GaN HEMT with fT/fMAX of 50GHz/154GHz. The proposed topology can drive VCSEL arrays in series or parallel without the need of pre-driver, using a comm

University of Macau, Macau, China 1 2 Compact and high-power bidirectional wireless power transfer (WPT) systems are desirable for mobile device-to-device (D2D) wireless fast charging. Prior WPT solutions [1-3] with inte

radars are essential for automotive sensing, medical imaging, and safety- monitoring applications. Among different architectures, frequencymodulated continuous-wave (FMCW) radars are particularly suited for miniature int

Qualcomm, Singapore 1 2 With the die area of modern processors growing larger and larger, the IR drop across the power supply rail due to its parasitic resistance becomes considerable. There is an urgent demand for local

Ultra-low-voltage operation is highly demanded in a system that adopts the DVFS scheme, e.g., a portable device that sustains days-long standby with a tiny battery. Such a system usually embeds modules that have specific

Light-emitting diodes (LEDs) are becoming the dominant lighting source over their conventional counterparts. Besides the benefits of high efficiency and long lifetime, LEDs also show great potential for high-speed data t

the efficiency of the power amplifiers (PAs) due to high peak-to-average power ratios of transmitted signals. Envelope tracking (ET) and envelope-eliminationand-restoration (EER) techniques have been proposed to improve

Fast load-transient responses are crucial for DC-DC converters to cope with the demands of modern highly integrated system-on-chip (SoC) designs. Various techniques have been proposed to improve transient responses by en

devices to cut the last wire. Resonant wireless power transfer (R-WPT) using magnetic resonance emerges as a promising approach, as it provides spatial freedom and can charge multiple devices simultaneously. ISM-band fre

Southeast University, Nanjing, China to the TA high gain, the detection inaccuracy of Δt due to the circuit mismatch in PD and CP2 becomes negligibly small. VCCP is designed as a voltage-controlled current source as show

tuning range compared with LC-VCO-based PLLs. However, they typically have higher jitter and larger frequency drift due to high sensitivity to PVT variations. Several PLL architectures were proposed to reject the phase n

(PLLs) are required to have wide a frequency tuning range from 71 to 86GHz and low phase noise of -90dBc/Hz @1MHz [1], which are still very challenging even with aggressive CMOS scaling [2]. Another issue associated with

near-threshold regions minimizes dynamic power consumption and achieves better efficiency [1]. This technique is widely used in energy-efficient applications, and is especially beneficial for wirelessly powered devices s

Wireless power transfer (WPT) in the range of 10 to 100mW [1] is widely used in implantable medical devices (IMDs) to eliminate the use of a battery. Due to load and coupling variations, the output voltage of the rectifi

Dynamic voltage scaling (DVS) is an effective strategy in reducing the power consumption of a processor through adjusting its supply voltage at runtime. The power converter that drives the processor should have a wide ou

Korea University, Seoul, Korea 1 2 Design of low-voltage and efficient energy-harvesting circuits is becoming increasingly important, particularly, for autonomous systems. Since the amount of energy that can be harvested

High performance low-dropout regulators (LDOs) are indispensable in a systemon-a-chip (SoC) due to their low output noise, fast transient response and good power supply rejection (PSR) characteristics. In general, differ

Millimeter-Wave (MMW) phased-array receivers are used not only to overcome the large path loss and thus to relax the link budget but also to electrically steer the beam direction to suppress unwanted signals. Each elemen

Emerging polar transmitters for highly efficient and linear power amplifiers (PAs) demand for high-efficiency, high-bandwidth and low-ripple supply modulators. In [1], a linear regulator is used; however, its efficiency

Frequency dividers are key components for frequency synthesis in wireless and wireline communication systems. Among different types of frequency dividers, LC-based injection-locked frequency dividers (ILFDs) feature high

The rapid advancement of processor technology has posed stringent challenges on power supply design. For high efficiency, switching converters are used. Frequent load switching requires the converters to have fast load t

Portable applications often need multiple voltages controlled by a power management IC to power up many functional blocks [1]. A switching pre-regulator is usually followed by a low dropout (LDO) regulator to provide a r