| 摘要 |
PURPOSE:To place two constant envelope signals on the same circle by controlling magnitudes of constant envelope signals so that mapping components of two constant envelope signals have the same level. CONSTITUTION:Two constant envelope signals are generated from input signals I and Q by an arithmetic part 1, orthogonal modulators 2A and 2B, etc., and are synthesized and outputted by amplifiers 3A and 3B and a vector synthesis signal taking-out part 7. Mapping components of respective constant envelope signals are detected from constant envelope signals passing amplifiers and hybrids 3A and 6A, and 3B and 6B by first and second mapping component detecting parts 9A and 9B, and an orthogonal modulator output level adjuster 11 is controlled through a control part 10 in accordance with the detected value. Thus, at least one of magnitudes of two constant envelope signals is so controlled that two mapping components have the same level, and both constant envelope signals are placed on the same circle and a constant envelope signal synthesizing amplifier is accurately operated. |
