An RF switch for connecting an antenna to a transceiver is described. The RF switch includes a first switchable capacitor arranged between a first terminal and a common terminal and a second switchable capacitor arranged between a second terminal and the common terminal. Each of the first and second switchable capacitors are switchable between a pass state and a blocking state. The capacitance value in the pass state is higher than the capacitance value in the blocking state.

A method and apparatus for controlling a power switch are disclosed. A power switch may be coupled between a power supply signal and a virtual power supply signal coupled to a circuit block. The power switch may be configured to couple the power supply signal to the virtual power supply signal based on a first control signal, and reduce a voltage level of the virtual power supply signal to a voltage level less than a voltage level of the power supply signal based on a second control signal. The power switch may be further configured to change a current flowing from the power supply signal to the virtual power supply signal based on a third control signal.

A high throw-count multiple-pole FET-based RF switch architecture that provides good RF performance in terms of insertion loss, return loss, isolation, linearity, and power handling. A common port RFC is coupled along a common path to multiple ports RFn. Embodiments introduce additional common RF path branch isolation switches which are controlled by state dependent logic. The branch isolation switches help to isolate the unused branch ports RFn and the unused portion of the common path from the active portion of the common path, and thereby reduce the reactive load attributable to such branches that degrades RF performance of the ports RFn closer to the common port RFC. The branch isolation switches can also be used to reconfigure the switch architecture for a multiplex function as well as separate switch path banks for re-configurability of purpose, tuning, or varying switch throw counts and packaging options.

A high throw-count multiple-pole FET-based RF switch architecture that provides good RF performance in terms of insertion loss, return loss, isolation, linearity, and power handling. A common port RFC is coupled along a common path to multiple ports RFn. Embodiments introduce additional common RF path branch isolation switches which are controlled by state dependent logic. The branch isolation switches help to isolate the unused branch ports RFn and the unused portion of the common path from the active portion of the common path, and thereby reduce the reactive load attributable to such branches that degrades RF performance of the ports RFn closer to the common port RFC. The branch isolation switches can also be used to reconfigure the switch architecture for a multiplex function as well as separate switch path banks for re-configurability of purpose, tuning, or varying switch throw counts and packaging options.

A communication signal terminal receives a first communication signal which includes an address of a first IC and a first configuration value for the first IC, and a second communication signal which includes an address of a second IC and a second configuration value for the second IC. A data common bus is connected to the communication signal terminal and transmits the first communication signal and the second communication signal. The first IC is configured to receive the first communication signal transmitted through the data common bus, and store first configuration value for the first IC included in the second communication signal. The second IC is configured to receive the second communication signal transmitted through the data common bus, and store the second configuration value for the second IC stored in the second communication signal.

A communication signal terminal receives a first communication signal which includes an address of a first IC and a first configuration value for the first IC, and a second communication signal which includes an address of a second IC and a second configuration value for the second IC. A data common bus is connected to the communication signal terminal and transmits the first communication signal and the second communication signal. The first IC is configured to receive the first communication signal transmitted through the data common bus, and store first configuration value for the first IC included in the second communication signal. The second IC is configured to receive the second communication signal transmitted through the data common bus, and store the second configuration value for the second IC stored in the second communication signal.

A non-contacting switch control system includes: a switch set, configured to receive a sensing signal from a sensing target, the switch set including a first non-contacting switch and a second non-contacting switch; a storage unit, configured to store a control program; and a processing unit, connected to the switch set and the storage unit, and configured to execute the control program and control the switch set based on the sensing signal. The control program includes: in a first operating mode, determining whether the first non-contacting switch receives an identification signal, and obtaining a first determination result; and when the first determination result is true, configuring the non-contacting switch control system to enter a second operating mode and disabling the second non-contacting switch.

A method and apparatus for controlling a power switch are disclosed. A power switch may be coupled between a power supply signal and a virtual power supply signal coupled to a circuit block. The power switch may be configured to couple the power supply signal to the virtual power supply signal based on a first control signal, and reduce a voltage level of the virtual power supply signal to a voltage level less than a voltage level of the power supply signal based on a second control signal. The power switch may be further configured to change a current flowing from the power supply signal to the virtual power supply signal based on a third control signal.

A communication signal terminal receives a first communication signal which includes an address of a first IC and a first configuration value for the first IC, and a second communication signal which includes an address of a second IC and a second configuration value for the second IC. A data common bus is connected to the communication signal terminal and transmits the first communication signal and the second communication signal. The first IC is configured to receive the first communication signal transmitted through the data common bus, and store first configuration value for the first IC included in the second communication signal. The second IC is configured to receive the second communication signal transmitted through the data common bus, and store the second configuration value for the second IC stored in the second communication signal.

A communication signal terminal receives a first communication signal which includes an address of a first IC and a first configuration value for the first IC, and a second communication signal which includes an address of a second IC and a second configuration value for the second IC. A data common bus is connected to the communication signal terminal and transmits the first communication signal and the second communication signal. The first IC is configured to receive the first communication signal transmitted through the data common bus, and store first configuration value for the first IC included in the second communication signal. The second IC is configured to receive the second communication signal transmitted through the data common bus, and store the second configuration value for the second IC stored in the second communication signal.