Multi-chain radio circuit system, quadrature divider circuit, and synchronization method

A synchronization method for a quadrature divider circuit at least comprising:

• when a clock enable signal is valid, enabling a clock signal as a gated clock, wherein the gated clock is provided to k radio circuits, and a quadrature divider in each of the radio circuits generates an in-phase local oscillator signal and a quadrature local oscillator signal required for transmission and reception of the current radio circuit based on the gated clock, wherein a frequency of the clock signal is twice that of a local oscillator signal, and k is a natural number greater than 1;
• and
• when the clock enable signal is invalid, disabling the clock signal, wherein the quadrature divider in each of the radio circuits performs a self-reset and resumes operation from a preset reset state after the clock signal is re-enabled.

A synchronization method for a quadrature divider circuit at least comprising:

• when a clock enable signal is valid, enabling a first clock signal, generating a differential gated clock based on the first clock signal and a second clock signal, wherein the gated clock is provided to k radio circuits, and a quadrature divider in each of the radio circuits generates an in-phase local oscillator signal and a quadrature local oscillator signal required for transmission and reception of the current radio circuit based on the gated clock, wherein the first clock signal and the second clock signal are differential signals, frequencies of the first clock signal and the second clock signal are twice that of a local oscillator signal, and k is a natural number greater than 1;
• and
• when the clock enable signal is invalid, disabling the first clock signal, wherein the quadrature divider in each of the radio circuits performs a self-reset and resumes operation from a preset reset state after the clock signal is re-enabled.