Abstract: In this work, a novel full W-band waveguide reflection-based adjustable attenuator (WRAA) based on quadrature hybrid couplers (QHCs) is presented. The attenuator consists of input and output ...

Abstract: A transmission-type attenuator with varactor-based tunable attenuation is presented. The design adopts a standard 50-$\Omega $ host microstrip line equipped with varactor-loaded stubs on its ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. A fixed-rate payment is a type of loan installment where the interest rate remains constant ...

Active fund managers have been on the defensive for years. As the biannual Morningstar Active/Passive Barometer regularly demonstrates, active funds overall don’t have a strong track record against ...