| 摘要 |
PURPOSE:To suppress a generated spurious at a signal output terminal by appling and adjusting independently a foward DC bias voltage to a diode of each frequency converter forming the frequency converter. CONSTITUTION:A balancing type frequency converter consists of 180 deg. hydrids 11, 13, an in-phase hybrid 12 for local power branching, and frequency converters 14, 15. VB1, VB2 are DC bias voltages to the converters 14, 15 respectively. In applying the DC bias voltage in the forward polarity of the diodes of the converters 14, 15, the converted loss of each output frequency component is changed. Then, the amplitude generated from both frequency converters is made coincident by taking notice of an optional spurious. Further, the phase is made coincident by inserting a phase adjusting circuit to a signal line or a local oscillating line. That is, the spurious at the output terminal is suppressed completely. |
