| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily and stably maintain a sufficiently small field through quantity over a wide temperature range in a field through compensation apparatus, a field through compensating antenna, a radar apparatus, and a field through compensation value measurement method. <P>SOLUTION: A system connected to a transmission system and a reception system and having a path for partially and directly transferring a transmission wave from the transmission system to the reception system includes: a parallel path parallel to the path, partially inputting the transmission wave to the reception system, and having a transfer characteristic for suppressing its level; a temperature measurement means for measuring a temperature of the parallel path; a storage means for previously storing a parameter including the quantity for compensating the transfer characteristic and mapped to the operational temperature of the parallel path so as to make an attenuation of the path to be a predetermined threshold value or above in a frequency band of the transmission wave; and a control means for compensating a deviation of the transfer characteristic by using the parameter mapped to the temperature measured by the temperature measurement means and stored in the storage means. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
