Patent ID: 7719327

Claim:
An inverting module, adopted in a frequency divider, comprising: a first source node configured to receive a first voltage; a second source node configured to receive a second voltage; a first input node and a second input node; a first output node and a second output node; a switch cross coupler, including: a multivibrator circuit, having at least a first transistor having a first terminal and a second terminal and a second transistor having a first terminal and a second terminal, wherein the first terminal of the first transistor and the first terminal of the second transistor are both directly connected to the second source terminal; a first switch device, disposed between the second terminal of the first transistor of the multivibrator circuit and the first source node, wherein the first switch device is controlled by a clock; a second switch device, disposed between the second terminal of the second transistor of the multivibrator circuit and the first source node, wherein the second switch device is controlled by the clock; and a set of switch inverters, including a first inverter and a second inverter, being configured to couple to the first source node and the second source node; wherein the first inverter is coupled to the first switch device, and is coupled between the first input node and the first output node; and wherein the second inverter is coupled to the second switch device, and is coupled between the second input node and the second output node.