A compact receiver which is easy in adjustment of a reference signal level is provided. A receiver having an antenna for receiving a wireless signal, a single pole single through switch which passes a signal received via the aforesaid antenna and outputs the signal when a first control signal is in a first state, and connects a signal received via the aforesaid antenna to a reference potential when the first control signal is in a second state, and a difference circuit which outputs a difference signal of an output signal of the aforesaid single pole single through switch when the first control signal is in the first state and an output signal of the aforesaid single pole single through switch when the first control signal is in the second state is provided.