Many people who get analog electronics still struggle a bit to design oscillators. Even common simulators often need a trick ...

Two kinds of reconfigurable impedance matching networks with controllable phase shift are proposed. The reconfigurable networks can match different loads with desired phase shift at center frequency ...

Since subsurface structures are often anisotropic, conventional anisotropic acoustic wave-equation depth migration methods are generally limited to one-way wave equations. In contrast, two-way ...