Systems and methods are described for providing wireless backhaul transport. This prevents the additional information from being leaked. The ESD protecting circuit is configured as a field transistor without a gate electrode, and the high breakdown voltage characteristics of the field transistor are lowered by implanting impurity ions, providing an ESD protecting circuit with a low breakdown voltage and low leakage current. This is achieved by reducing the maximum particle diameter of cylindrical pellets to {fraction } inch or a trilobe to {fraction } inch. The temperature model is adjusted in response to the frequency error and a temperature proximate the oscillator. The means for control serves as a control interface allowing openingclosing of the gate.