This work presents a 12 bit 200 MS/s dual-residue pipelined successive approximation registers (SAR) analog-to-digital converter (ADC) with single open-loop residue amplifier (RA). By using the inherent characteristics of SAR conversion scheme, proposed ADC sequentially generates two levels from RA, which eliminates need for inter-stage gain-matching calibration. To convert generated residues, ...

An integrated circuit that measures time intervals with high precision and accuracy has a wide range of applications including data conversion, ranging, 3-D imaging. The resolution which are quantized by ring oscillator or delay line is limited the minimum an inverter in technology. We propose use cyclic-coupled oscillators (CCROs) as time-domain quantizer to achieve combination subgate-delay t...

Distributed sensor networks can serve as a robust electronic warfare support capability for sensing in contested and congested electromagnetic environments. While the response of an individual node may be unreliable due to interference or poor signal to noise ratio (SNR), the overall sensor network performance is minimally affected. In addition, a distributed sensor network enables geolocation ...

This paper presents a 1-GS/s12-bit pipelined analog-to-digital converter (ADC) fabricated in 40-nm CMOS technology that optimizes the settling time, bit error rate, and robustness. ADC uses an improved timing called pre-quantization (PQT), which implements quantization half time of sampling phase to maximize output-settling operational amplifier (op-amp). A complete clocking scheme along with d...

The rapid development of artificial intelligence (AI) and Internet Things (IoT) increase the requirement for edge computing with low power relatively high processing speed devices. computing-in-memory (CIM) schemes based on emerging resistive nonvolatile memory (NVM) show great potential in reducing consumption AI computing. However, inconsistency NVM may significantly degenerate performance ne...

In this paper, a linearization of dual RF channels over single carrier wavelength is proposed and experimentally demonstrated. Multiple microwave signals with multi-octave bandwidth are modulated by double dual-parallel Mach-Zehnder modulator (D-DPMZM) recovered differential balanced detector (BPD). The theoretical experimental model illustrates the elimination second-order harmonic distortions...

In this paper a two-phase supply modulator suitable for envelope tracking power amplifier is presented. The designed supply modulator has the linear assisted switching architecture. Two-phase architecture is used in order to reduce the output switching ripples. The proposed architecture uses hysteretic control instead of pulse width modulation (PWM) which significantly reduces the circuit compl...

A microwave photonic channelizer can achieve instantaneous reception of ultra-wideband signals and effectively avoid electronic bottleneck; therefore, it be perfectly applied to a wideband radar system warfare. In channelization schemes based on an optical frequency comb (OFC), the number lines usually depends that sub-channels. order improve utilization rate OFC, we propose scheme shift OFC by...

This paper proposes a circuit to linearize the signal current and improve the distortion characteristics at the input of a current-mode circuit. Input voltage-to-current (V/I) conversion is carried out by a resistor that connects the signal source and the current input terminal of the current-mode circuit. The signal current flowing into the current-mode circuit through this resistor is distort...