- Radio Frequency Integrated Circuit Design
- Microwave Engineering and Waveguides
- Advanced Power Amplifier Design
- Advanced Photonic Communication Systems
- Advancements in PLL and VCO Technologies
- Photonic and Optical Devices
- Semiconductor materials and devices
- Electromagnetic Compatibility and Noise Suppression
- Particle Dynamics in Fluid Flows
- Constructed Wetlands for Wastewater Treatment
- Advanced Antenna and Metasurface Technologies
- Nanowire Synthesis and Applications
- Semiconductor Lasers and Optical Devices
- Sensor Technology and Measurement Systems
- Wastewater Treatment and Nitrogen Removal
- Advanced Sensor and Energy Harvesting Materials
- Millimeter-Wave Propagation and Modeling
- Cyclone Separators and Fluid Dynamics
- Advanced Measurement and Detection Methods
- Engineering and Test Systems
- Semiconductor Quantum Structures and Devices
- Advancements in Semiconductor Devices and Circuit Design
- Aerodynamics and Acoustics in Jet Flows
- Magneto-Optical Properties and Applications
- Phosphorus and nutrient management
KU Leuven
2014-2021
IMEC
2020
UCLouvain
2018
Tianjin University
2013
China People's Public Security University
2012
Peking University
2011
Washington State University
2005-2008
This paper presents a high-efficiency, linear power amplifier (PA) for 28GHz mobile communications in 40nm CMOS technology. The design and layout are optimized high linearity while maintaining gain output power. A capacitance neutralized differential pair with source degeneration inductor enhancement is discussed. inductive technique greatly increases the optimal load impedance, which enables low loss parallel combining. complete PA achieves measured saturated of 18.1dBm 41.5% power-added...
This paper presents a 0.53-THz subharmonic injection-locked 1 × 4 phased array based on an oscillator (ILO) chain. Thanks to the ILO chain, phase errors in can be compensated without introducing power variation. technique enables accurate beam steering with 60° scan range E-plane at 0.53 THz. A sixstage triple-push is proposed generate signal Compared conventional oscillator, it reduces layout constraints, improves balance, and enhances output by least 3 dB. The implemented 40-nm CMOS. With...
This paper presents a fully packaged 140-GHz dielectric waveguide (DWG) communication link using foam-cladded fiber. A novel frequency shift keying (FSK) demodulator topology is proposed with low-frequency feedback loop for optimal FSK demodulation under process, voltage, and temperature variation. The introduction of phase shifters an on-chip local oscillator relaxes the design requirements IF-stage benefits from larger gain. transmitter based on fundamental at 140 GHz transformer-coupled...
A high-speed polymer microwave fiber (PMF) communication link is implemented in a 40nm bulk CMOS technology, by making use of two-tone CP-FSK modulation and carrier frequency 120GHz. The presented transceiver enhanced coupler, with loss only 3.4dB, allows over distance 15m at 1.5Gbps. Data rates up to 17.7Gbps were achieved 1m BER <; 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-12</sup> . maximum product data rate 60.8Gbps.m 8m, resulting...
This letter presents fabrication of a flexible 1.5-μm -channel-length silicon thin-film transistor (TFT) on plastic substrate with cutoff frequency f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> ~ 3.7 GHz and maximum oscillation <i xmlns:xlink="http://www.w3.org/1999/xlink">f</i> xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> 12 GHz. Radio-frequency (RF) characterization is conducted for the TFT under uniaxial mechanical bending...
Three different bidirectional polymer microwave fiber (PMF) links are presented and discussed. The proposed solutions exploit the following orthogonal signaling dimensions: wave direction, polarity, signal polarity. First, a 120-GHz substrate integrated waveguide directional coupler is implemented exploits direction orthogonality. 4-port on-board hybrid achieves measured data rates of, respectively, 6 5.5 Gbps in up- down-link over distance of 8 m. Second, ortho-mode transducer (OMT)...
This paper discusses some of the recent advances and challenges that lie ahead for Polymer Microwave Fibers (PMF). PMF is a communication concept combines mm-wave chips, metal couplers cheap plastic fibers. It has unique benefits over copper wireline optical which can give it preferred solution low-cost, low-weight robust high-speed data-communication such as automotive industrial Ethernet, consumer-oriented connectivity, signal distribution more.
This paper presents a millimeter-wave (mm-wave) packaging design for E-band long-haul point-to-point communications. A broadband flip-chip interconnect with standard 75 μm pad pitch is developed on an alumina substrate. To meet the application requirement, microstrip line to WR-12 waveguide (WG) transition proposed. The has no back-short cavity or modified WG involved. back-to-back measurement conducted characterize performance. Results show that working bandwidth from 69.5 87 GHz and...
A millimeter-wave bond-wire packaging and micro-strip to waveguide transition are proposed for E-band CMOS power amplifiers. 700μm cavity is used shorten length, the inductance compensated by matching network, realizing a good performance with 0.3dB loss over 30GHz bandwidth. low-cost Alumina board transition, without back-cavity or modification of standard waveguide. Two coupling pads introduced realize from 71 86GHz frequency range. Gain, output drain efficiency 40nm E-CMOS amplifier,...
A 28 GHz front-end module (FEM) for 5G communication is implemented in 22 nm FD-SOI technology. Competitive performance both TX and RX modes achieved simultaneously with robustness mode ESD protection. The key these features the transmit/receive (T/R) switch incorporating PA circuitry, offering high linearity mode, low NF ESD-protection capability. output stage uses a 3-stacked-FET topology to achieve power. Several matching techniques are equally distribute large voltage swing among three...
This paper presents a 140 GHz fully packaged frequency shift keying transceiver with automatic tuning loop for dielectric waveguide communication. A novel receiver topology is proposed to enable mitigation against process, voltage and temperature variations using an tunable phase in the LO distribution. Implemented 28 nm CMOS, design has total power consumption of 230 mW occupies active area 0.9 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
A novel LC Quadrature VCO (QVCO) employing bottom-series coupling and capacitor tapping to suppress phase noise at low voltage operation is presented. Placing the transistors bottom of switching pairs, method yields zero resonator-phase-shift (RPS) which maximizes quality factor (Q) resonator. The technique allows a large signal swing resonator outputs while maintaining current sources turned-on in saturation. Therefore, signal-to-noise ratio (SNR) loaded Q are both boosted resulting noise....
A novel CMOS low voltage inductor-less sub-harmonic mixer for 5 GHz industrial scientific medical (ISM) band direct conversion receiver in an 0.18-/spl mu/m SiGe Bi-CMOS process is presented. Simulated with 0.5% g/sub m/ mismatch, load mismatch and 2/spl deg/ LO I/Q phase error the able to achieve high IIP/sub 2/ of 43.6 dBm, 3/ 0 gain 8.05 dB while consuming less than 2.6 mA from a single 1.8 V supply.
A certain type of radar was equipped in the main fighter jets. It is equipment which can ensure completion task fight air. But at present, this transmitter outside room does not have special test and manual testing process also more complicated. So, to achieve rapid for technician improve measurement’s accuracy, need a new system. In system used bus control technology, virtual instrumentation technology database technology. Besides these, brought them combine organically, then we get with...