Patent ID: 7679457

Claim:
An oscillating apparatus comprising: a plurality of variable frequency oscillators, each of which is provided in correspondence with a different oscillating band from one another; and a selection section that selects an oscillating signal that is from a variable frequency oscillator provided in correspondence with a designated oscillating band, from among the plurality of variable frequency oscillators, and outputs the selected oscillating signal, wherein the selection section includes a plurality of selectors connected in a tree structure, each selector outputting a selected one of inputted two or more oscillating signals, each of the plurality of variable frequency oscillators is connected to a selector positioned at an end of the tree structure of the plurality of selectors, and a number of selectors through which an oscillating signal outputted from one of the variable frequency oscillators passes until being outputted from the oscillating apparatus is smaller than a number of selectors through which an oscillating signal outputted from at least one of the other variable frequency oscillators provided in correspondence with an oscillating band of a frequency lower than a frequency of the one variable frequency oscillator passes until being outputted from the oscillating apparatus.