A5101991017- Radio Frequency Integrated Circuit Design
- Microwave Engineering and Waveguides
- Semiconductor Lasers and Optical Devices
- Ultra-Wideband Communications Technology
- Advanced Power Amplifier Design
- Acoustic Wave Resonator Technologies
- Photonic and Optical Devices
- Advanced Photonic Communication Systems
Institute of Semiconductors
2023-2024
Chongqing University of Technology
2024
This paper describes a ultra-wideband (UWB) three-stage cascaded high gain amplifier with low group delay variation for phased-array radar system. The shunt inductor at the input not only provides an electrostatic discharge (ESD) path to ground, but also introduces new notch S11, thus extending matching bandwidth. Staggered tuning of load impedance peaks each stage facilitates balance between flat and variation. output further enhances overall while reinforcing bandwidth stability through...
This paper presents a 2–20-GHz highly accurate vector-sum variable gain phase shifter (VGPS) monolithic microwave integrated circuit (MMIC) for ultra-broadband phased-array applications. An active power splitter followed by dual-path I/Q network is utilized precise signals generation. A reverse-slope compensation technique proposed to improve broadband balances. Two single-to-differential convertors further divide the into four quadrature signals. The vector modulator consisting of...
This paper presents a 6–18-GHz Broadband 6-bit digital stepped phase shifter monolithic microwave integrated circuit (MMIC) with low in-band error. A reflective type topology variation compensation capacitor in the loads is proposed to reduce Improved unfolded Lange couplers are used ensure symmetry of shifter. The broadband has been fabricated 0.25-μm GaAs pHEMT technology. Measurement results show that exhibits 6.8‒9.6-dB insertion loss over 6‒18-GHz. achieves an RMS error 3.7° and...