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RTu3C-5: A ±1V-DC to 20-GHz Front-End Chipset with 1.5-Vpp AC and 0.5-to-1V DC Outputs for Direct Sampling Real-Time Oscilloscopes
This paper presents a 20 GHz DC-coupled RF front-end chipset for direct sampling digital real-time oscilloscopes. The chipset consists of four chips: a DC canceling amplifier (DCCA), a distributed act...
RTu4A-1: A 15/30/60-GHz 1TX/4RX Radar Chipset Achieving 6° Angular Resolution Using Frequency Dimension for Virtual Aperture Expansion
The angular resolution of a millimeter-wave frequency-modulated continuous-wave (FMCW) radar can be significantly improved by stimulating antenna arrays with multiple frequencies, thus diversifying el...
RTu4A-2: An 8-Element 800MHz BW 0.083mm²/element Scalable Current-Mode True-Time-Delay Analog Combiner for Low SWaP-C Antenna Arrays
This paper presents a scalable current-mode true time delay (CMTTD) analog baseband combiner for large antenna arrays. The proposed combiner uses current-mode signal addition and alleviates the scalab...
RTu4A-3: A Compact, 17.8TOPS/W, 2Gbps Programmable Analog Matched Filter and Coherent Accumulator for 79GHz PMCW Radar
We present an analog matched filter (MF) and coherent accumulator for 79GHz phase modulated continuous wave (PMCW) radar. The MF uses a current-switching-based architecture, eliminating the high-speed...
RTu4A-4: A 28-nm 9-mm High-Resolution Multi-Mode IR-UWB Radar SoC with 16-GS/s Equivalent-Time Sampling for Non-Contact Detection of Human Vital Signs
This paper presents a 9-mm high-resolution multi-mode impulse radio ultra-wideband (IR-UWB) radar system on chip (SoC) for the non-contact detection of human vital signs. It incorporates a radio-frequ...
RTu4A-5: A Fully-Integrated Doppler-Assisted FMCW Radar with Low Hertz Range Noise Figure for Indoor Localization and Vital Sign Sensing
This paper presents a Doppler-assisted frequency modulated continuous wave (FMCW) radar that leverages the benefits of FMCW’s range resolution and Doppler’s sensitivity for indoor applications. The Do...
RTu4B-1: 110-to-140GHz Frequency Tripler with 13% Efficiency, 7.2dBm Psat Using Adaptive Biasing and 3rd Harmonic Boosting in 22nm FDSOI
This paper presents a high-efficiency D-band frequency tripler in 22nm FDSOI CMOS. The operation point is chosen using drain current Taylor series derivation to boost the 3rd harmonic (H3) adaptively....
RTu4B-2: A 126–137GHz Regenerative Frequency Shifter in 22nm FDSOI
This paper presents the concept of a regenerative D-band frequency shifter. The circuit can be viewed as an extension of the Miller fractional frequency generator. Yet, as opposed to the second-order ...
RTu4B-3: A 200GHz Quasi-Circulator with a Widely Tunable Termination for >30dB Isolation and 8.3dB SNR Degradation in a 22nm FD SOI Process
This paper presents a quasi-circulator design optimized for sub-THz applications, operating at 200 GHz and fabricated using 22-nm FD SOI technology. The proposed design features a coupled Coplanar Wav...
RTu4B-4: An Ultra-Compact and Wideband D-Band Power Amplifier in 28nm CMOS with Area-Efficient Coupled Line-Based Matching Network
This paper presents an ultra-compact and wideband D-band power amplifier (PA) utilizing area-efficient coupled line (CPL)-based matching networks. The design overcomes the size limitation in the signa...