RADIO FREQUENCY SWITCH CIRCUIT AND APPARATUS HAVING BUILT-IN COUPLER

• Main Authors: YOO, Hyun Hwan, KIM, Yoo Hwan, NA, Yoo Sam, CHEON, Seong Jong, LIM, Jong Mo, YOO, Hyun Jin
• Format: Patent
• Language: English
• Published: 01.11.2018
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; SEMICONDUCTOR DEVICES; WAVEGUIDES

A radio frequency switch circuit is described including a radio frequency switch and a coupler. The radio frequency switch includes a first band switch circuit connected between a first signal port and a common port, and configured to switch a first band signal. The coupler includes a first coupling wiring, disposed adjacent to a signal wiring formed between the common port of the radio frequency switch and an antenna port, and configured to form a first coupling signal with the signal wiring. A resonant frequency of the first coupling wiring is based on an inductance of the first coupling wiring and a capacitance of the radio frequency switch.