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无绳电话可以摆脱话机位置的限制,在一定范围内实现移动通话,非常适合在家庭及小型办公室环境中使用。现在市场上的绝大多数无绳电话机在发射端直接用摸似音频信号对高频截波进行调制后发出,在接收端则通过检波恢复音频信号。这种传统技术虽然成本低廉、简便易行,但由于是用模拟信号进行传输的,所以存在着一系列难以克服的缺陷,加抗干扰性
Cordless telephones can get out of the reach of your phone and make mobile calls within range, making them ideal for home and small office environments. The vast majority of cordless telephones on the market are now transmitting directly at the transmitting end with a tamper-like audio signal that is modulated by a high-frequency cutoff, while the receiving end restores the audio signal by detection. Although this traditional technology is low in cost and simple and easy to use, it has a series of insurmountable defects due to its transmission by analog signals, as well as anti-interference