Abstract: Example chip structures are described. One example chip structure includes a die, a first chip bond pad, and a second chip bond pad. A first radio frequency circuit, a second radio frequency circuit, a first interconnect metal wire, and a second interconnect metal wire are disposed in the die. The first interconnect metal wire is connected to the first radio frequency module, and is configured to provide an alternating current ground for the first radio frequency module. The second interconnect metal wire is connected to the second radio frequency module, and is configured to provide an alternating current ground for the second radio frequency module. The first chip bond pad and the second chip bond pad are disposed on a surface of the die.

Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch coupled to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are coupled in a stack manner, channel width to length ratios of a preset number of transistors in the transistors progressively decrease in a direction away from the antenna port, where the preset number is less than or equal to the total number of the transistors. With the radio frequency antenna switch, capacitances of the preset number of transistors close to the antenna port increase, and distributed voltages that these transistors close to an antenna end in an off state need to bear are reduced.

Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch coupled to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are coupled in a stack manner, channel width to length ratios of a preset number of transistors in the transistors progressively decrease in a direction away from the antenna port, where the preset number is less than or equal to the total number of the transistors. With the radio frequency antenna switch, capacitances of the preset number of transistors close to the antenna port increase, and distributed voltages that these transistors close to an antenna end in an off state need to bear are reduced.

Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stacked manner. Each transistor in the multiple transistors has a multi-finger structure, comprising at least one first finger used as a source and at least one second finger used as a drain. Each first finger is connected, using multiple first vias, to a source corresponding to the first finger, and each second finger is connected, using multiple second vias, to a drain corresponding to the second finger. The number of the first vias and the number of the second vias of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port.

Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stacked manner. Each transistor in the multiple transistors has a multi-finger structure, comprising at least one first finger used as a source and at least one second finger used as a drain. Each first finger is connected, using multiple first vias, to a source corresponding to the first finger, and each second finger is connected, using multiple second vias, to a drain corresponding to the second finger. The number of the first vias and the number of the second vias of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port.

Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stack manner; channel width to length ratios of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port, where the preset number is less than or equal to the total number of the multiple transistors. With the radio frequency antenna switch, capacitances of the preset number of transistors close to the antenna port increase, and distributed voltages that these transistors close to an antenna end in an off state need to bear are reduced.

Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stack manner; channel width to length ratios of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port, where the preset number is less than or equal to the total number of the multiple transistors. With the radio frequency antenna switch, capacitances of the preset number of transistors close to the antenna port increase, and distributed voltages that these transistors close to an antenna end in an off state need to bear are reduced.

Abstract: A radio frequency antenna switch is provided that includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stack manner; channel width to length ratios of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port, where the preset number is less than or equal to the total number of the multiple transistors. With the radio frequency antenna switch, capacitances of the preset number of transistors close to the antenna port increase, and distributed voltages that these transistors close to an antenna end in an off state need to bear are reduced.

Abstract: A radio frequency antenna switch is provided that includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stack manner; channel width to length ratios of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port, where the preset number is less than or equal to the total number of the multiple transistors. With the radio frequency antenna switch, capacitances of the preset number of transistors close to the antenna port increase, and distributed voltages that these transistors close to an antenna end in an off state need to bear are reduced.