Surface Acoustic Wave (SAW) Phase Shifters
- An electronically controlled surface-acoustic-wave SAW phase which means that an applied voltage generates an electric field aligned with the propagation of the given SAW.
- The electric field is applied with respect to a piezoelectric substrate sheeted between the transmitting and receiving transducers mounted on the piezoelectric billet.
- The transmitting transducer is coupled with electrical energy which turns an acoustic wave. As a result, the acoustic wave is attached to the substrate and sends it either to receiver transducer. The receiver transducer changes the acoustical wave into electrical energy which is directed towards a detector or any other suitable electric gadget.
- The electric field applied between the transmitting and receiving transducers generates an electronically controlled phase shift of surface acoustical wave being sent. An electric field can be applied to a N – or P type semiconductor that is responsible for concentrating charge carriers along the interface where acoustic wave electrical fields exist.
Phase Shifter
The phase shifter is one of the main parts which makes microwave systems versatile and effective. A phase shifter is an important component that allows controlled varying of the phase of electromagnetic signals at microwave frequencies. This ability is key in beam steering, signal modulation, and antenna control of the phased array. Microwave technology is an important component of modern communication systems, radar applications, and many scientific pursuits.
As we dive into the world of phase shifters in microwave frequency, this voyage will reveal basic principles, categories, and numerous use cases that make them irreplaceable for developing important aspects of microwave technology. Understanding the complexities of phase shifters not only makes us understand microwave systems better but also paves the way for revolutionary innovations in modern communication and radar technologies.
Table of Content
- Phase Shifter in Microwave
- Types
- Components
- Design Considerations
- Phase Shifter Range and Return Loss
- Working Principles
- Applications
- Advantages
- Disadvantages