Radio Frequency switch

• Main Author: JIN, JUN-DE
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2021
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PULSE TECHNIQUE; SEMICONDUCTOR DEVICES

Disclosed is a RF switch module and methods to fabricate and operate such RF switch to alternatively couple an antenna to either a transmitter transmission line or a receiver transmission line to realize lower distortion of a signal at high frequencies with improved insertion loss and without affecting isolation. In one embodiment, a Radio Frequency (RF) switch module, includes, a switch circuit for switching between transmitting first signals from a transmitter unit to an antenna and transmitting second signals from the antenna to the receiver unit, wherein the switch circuit comprises a plurality of field effect transistors (FETs), wherein each of the plurality of FETs comprises stacked gate dielectrics and at least three metal contacts to a conductive gate, wherein the stacked gate dielectrics comprises at least one first dielectric layer, wherein the first dielectric layer comprises a negative-capacitance material.