This article presents a millimeter-wave (mmWave) three-way Doherty output network and its silicon implementation at 38 GHz for 5G new radio (NR) orthogonal frequency-division multiplexing (OFDM). The proposed synthesis methodology can realize impedance levels that are close to the ideal operation, reduce transformation ratio back-off, directly absorb device's parasitic capacitance. Its design procedure tradeoffs discussed in detail. A 38-GHz power amplifier (PA) prototype is implemented...

Millimeter-wave/THz hyperspectral imaging has numerous applications in security, non-destructive evaluation, material characterization, and medical diagnostics [1]. Unlike single-frequency imaging, operates over a wide frequency range offers spectroscopic information on each pixel. This combines mm-wave/THz high-resolution with spectroscopy improves detection sensitivity specificity. In practice, pulse-based supports fast data acquisition, but requires receiver (RX) real-time wideband...

In this paper, we present a fully integrated multi-modality CMOS cellular sensor array with four sensing modalities to characterize different cell physiological responses, including extracellular voltage recording, impedance mapping, optical detection shadow imaging and bioluminescence sensing, thermal monitoring. The consists of nine parallel pixel groups corresponding signal conditioning blocks. Each group comprises one temperature 16 tri-modality pixels, while each can be independently...

This article presents an extremely broadband 24.5-43.5 GHz receiver (RX) achieving 32-56-dB instantaneous full-band image rejection (IR), which supports multiple major mm-Wave 5G bands at 24.5/28/37/39/43 GHz. A compact transformer-based I/Q network (0.14 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) is proposed to generate high-precision LO signals millimeter-wave (mm-Wave) and provide built-in load impedance up-transformation...

This paper presents a packaged 28-GHz Chireix outphasing transmitter (TX) for power amplifier (PA) efficiency enhancement at both peak and back-off output (PBO). The main objective is to investigate the possibility of employing multi-feed antenna as multi-port passive network perform active load modulation. As proof concept, an TX architecture proposed by leveraging dual-feed loop (DLA) achieve high transmission wideband complex modulated signals. Theoretical analysis simulation results...

A millimeter-wave (mm-Wave) dual-feed square loop antenna is presented in this paper for 5G communications. It synthesizes identical far-field radiation patterns as a conventional single-feed antenna. The (DFA) also simplifies or even eliminates the lossy power-combining network between transmitter and antenna, achieving direct on-antenna power combining. proposed concept significantly improves total radiated efficiency of wireless transmitter, particularly useful transmitters that normally...

This paper presents a multi-phase sub-harmonic injection locking technique. technique can significantly increase the range of oscillator compared to conventional single-phase scheme. By application this technique, scalable "active frequency multiplier" chain architecture is proposed, which generate THz signal from low mm-wave or RF reference source. We also propose multi-ring system topology implement multiplier As proof concept, cascaded 3-stage 3-phase 2nd-order implemented in IBM9HP SiGe...

This paper presents a fully integrated CMOS multimodality joint sensor/stimulator array with 1024 pixels for real-time holistic cellular characterization and drug screening. The proposed system consists of four pixel groups parallel signal-conditioning blocks. Every group contains 16 × pixels, each includes one 28 μm gold-plated electrode, 12 photodiodes, in-pixel circuits, within 58 footprint. Each supports realtime extracellular potential recording, optical detection, chargebalanced...

This letter presents a 27-46-GHz low-noise amplifier (LNA) in 45-nm CMOS silicon-on-insulator (SOI) process. Two circuit techniques are employed to enhance the LNA bandwidth. First, intrinsic gate-to-drain parasitic capacitance of input transistor and frequency-dependent behavior first-stage load impedance explored realize dual resonances for S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> , thus extending matching Second, network...

Millimeter-wave massive MIMOs leverage large array size to enhance the link budget and spatial selectivity, but their resulting narrow beamwidth substantially complicates transmitter-receiver (TX-RX) alignment. Unlike most existing "static" applications (e.g., mm-wave HDTV transmission), many future links will operate in highly "dynamic" environments, such as wireless AR/VR vehicle-/drone-/machine-based links, necessitating rapid precise beam-forming/-tracking for high reliability low...

This paper presents a Doherty radiator architecture that explores multi-feed antennas to achieve an on-antenna load modulation network and demonstrates high-speed high-efficiency transmission of wideband modulated signals. On the passive circuits, we exploit antenna concept realize compact active for close-to-ideal operation, power combining, millimeter-wave (mm-Wave) signal radiation. Moreover, analyze far-field proposed demonstrate its wide field view (FoV). employ gigahertz-bandwidth...

This paper presents a multifeed antenna structure that synthesizes the desired far-field radiation characteristics with on-antenna power combining and increases total radiated of wireless transmitter. The driving signals at multiple feeds are scaled properly in amplitude phase, so they collectively synthesize current/voltage distribution achieve resulting pattern. proposed offers flexibility to optimize impedances based on locations feeds. It also simplifies passive impedance matching...

A wideband high-efficiency frequency doubler leveraging transistor multiport waveform shaping is presented in this letter. Unlike the conventional push-push pair with grounded source terminals, both gates and sources of proposed are simultaneously driven by 180° out-of-phase signals. As a result, drain current bifurcation greatly reduced, leading to suppression undesired 4th harmonic significant enhancement 2nd current. The EKV FET model also adopted mathematically analyze topologies, which...

This paper presents a design methodology that can effectively extend the bandwidth of cascode common-source with inductive degeneration low noise amplifier (LNA), which is one most popular LNA topologies in millimeter-wave bands. Specifically, this addresses how to broaden input matching by realizing dual-resonant <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${S}$ </tex-math></inline-formula> 11, and...

A millimeter-wave (mm-wave) polarization-division-duplex (PDD) transceiver (TRX) front-end with an on-chip multifeed self-interference-canceling (SIC) antenna and all-passive reconfigurable RF canceller is presented in this paper. The SIC offers several advantages over existing silicon-based antenna-domain self-interference cancellation approaches, such as electrical-balance duplexer, pair, non-reciprocal circulator. First, it inherently provides a high transmitter (TX)-receiver (RX)...

A major challenge for low-cost silicon-based mm-wave wireless links, e.g., the 5G communication, is to provide large transmitter (Tx) output power (P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">out</sub> ) with high energy efficiency and linearity from a limited supply voltage, so that path loss link budget at can be compensated. Power combining often required high-power Tx. The existing power-combining techniques are mainly in two...

This paper demonstrates an eight-element multipleinput-multiple-output (MIMO) hybrid beamforming receiver array with autonomous millimeter-wave (mm-Wave)/RF frontend and digital baseband beamforming. It enables dynamic suppression of unknown blockers on desired signals, without knowing their carrier frequency, angle-of-arrival (AoA), modulation scheme as a priori. After cancellation in-band/cochannel wideband-modulated blocker, widebandmodulated signal is measured high SNR, achieving...