基準発振器

Japanese Patent JP3938211

B2

It is difficult to check the suitability of a radio anechoic room as a measuring environment, even when countermeasures for preventing reflection of electromagnetic waves and blocking electromagnetic waves are taken against the radio anechoic room and incidental equipment disposed therein, for example. Depending on the circumstances, measurement reliability is decreased when the measurement is taken without recognizing that these countermeasures are insufficient. Therefore, there is a demand for a device that can easily and quickly check whether a measuring environment, such as a radio anechoic room, or a measuring system is suitable for measurement. A reference oscillator assembly 10 of the present invention includes a radiating section 13 formed by removing a part of an outer conductor 12 from a linear coaxial feedline 11, the removed part having a predetermined size and extending from an upper end of the coaxial feedline 11 toward a lower end thereof, an oscillator 14 electrically connected to the lower end of the coaxial feedline 11 so as to supply high-frequency power, and magnetic members 15 and 15 respectively provided at upper and lower ends of a remaining part of the outer conductor 12. of the coaxial feedline 11.

Hiroshi Kitada
Yukio Yamamoto
Yasuoka Yoshihisa
Yutaka Komatsu

JP2006522175A

June 27, 2007

October 19, 2005

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MURATA MANUFACTURING CO.,LTD.

H01Q9/30; G01R29/00; H01Q9/32; H01Q17/00

JP2004336303A
JP2004301514A
JP2005012841A
JP9153725A
JP2000508150A
JP9199930A
JP3092003A
JP10268009A
JP7202761A
JP7326920A

Hajime Ohara

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