Frontiers

High-frequency gain enhancement of a broadband metasurface antenna with parasitic patches using characteristic mode analysis

This paper presents a broadband metasurface (MTS) antenna using the characteristic mode analysis (CMA) method for high-frequency gain enhancement. First, by loading four parasitic patches around the 3 ...
Oregonian

Miss Manners: Couple enjoys taking pics of themselves using a timer. No, they don’t need your help

DEAR MISS MANNERS: I have had a recurring situation happen for the past five years -- since I have been married. My husband and I enjoy taking photos of us together using a timer on the camera. We ...
GitHub

LFW2BBP: Broadband Ground-Motion Parameters Estimation Using Physics-Based Simulated Low-frequency Waveforms and Deep Learning

Accurate prediction of broadband ground motion parameters is crucial for earthquake disaster prevention and mitigation. However, physics-based ground motion simulations are limited by the lack of high ...
IEEE

A V-Band Divide-by-6 Injection-Locked Frequency Divider Using Current-Reused Topology With Second Injection and Harmonic Boosting

Abstract: This letter presents a V-band injection-locked frequency divider (ILFD) with high input sensitivity and wide locking range (LR), implemented in 90-nm CMOS technology. The proposed ...
C&EN

Direct Frequency Comb Cavity Ring-Down Spectroscopy Using Vernier Filtering

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator.
C&EN

High-Efficiency and Flat-Top Electro-Optic Frequency Comb Using a Single Modulator and Drive on Thin-Film Lithium Niobate

State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou 310058, ...
Hackaday

Using The 555 For Everything

The 555 timer is one of the most versatile integrated circuits available. It can generate PWM signals, tones, and single-shot pulses. You can even put one in a bi-stable mode similar to a flip flop.
IEEE

Design and Analysis of Divide-by-4 Injection-Locked Frequency Divider Using Gain-Boosting Injection Balun and Dual Linear Mixer Techniques

Abstract: We demonstrate the design and analysis of a K-band (18-27 GHz) divide-by-4 injection-locked frequency-divider (ILFD4) in 90 nm CMOS. A wideband balun is used for converting the single-ended ...