Patent ID: 8629760

Claim:
A signal conversion device, comprising: a signal distribution module; a first and a second injection-locked cross-coupled oscillation modules each comprising an oscillating signal input terminal, a locking signal input terminal and an oscillating signal output pair, wherein the two oscillating signal input terminals are respectively coupled to the signal distribution module; a first and a second differential amplification modules each having a signal input pair and a signal output pair, wherein the signal input pair of the first differential amplification module is coupled to the oscillating signal output pair of the first injection-locked cross-coupled oscillation module, and the signal input pair of the second differential amplification module is coupled to the oscillating signal output pair of the second injection-locked cross-coupled oscillation module; and a signal comparison module coupled to one signal output end of the signal output pair of the first differential amplification module and one signal output end of the signal output pair of the second differential amplification module, for comparing output signals of the two signal output ends so as to generate ASK modulation signals, wherein the first injection-locked cross-coupled oscillation module further comprises a first NPN transistor and a second NPN transistor each having a base, a collector and an emitter, allowing the base of the first NPN transistor to be coupled to the collector of the second NPN transistor, the base of the second NPN transistor to be coupled to the collector of the first NPN transistor, and the emitter of the first NPN transistor to be coupled to the emitter of the second NPN transistor to form a first connection node, and wherein the second injection-locked cross-coupled oscillation module further comprises a third NPN transistor and a fourth NPN transistor each having a base, a collector and an emitter, allowing the base of the third NPN transistor to be coupled to the collector of the fourth NPN transistor, the base of the fourth NPN transistor to be coupled to the collector of the third NPN transistor, and the emitter of the third NPN transistor to be coupled to the emitter of the fourth NPN transistor to form a second connection node.