A downsized wireless microphone, comprising a microphone unit (11) and a helical antenna (23) for radiating high-frequency signals based on the voice signals outputted from the microphone unit (11), characterized in that the helical antenna (23) is disposed close to the rear surface side of the microphone unit (11).
申请公布号
WO02084891(A1)
申请公布日期
2002.10.24
申请号
WO2002JP03547
申请日期
2002.04.09
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;KAWASAKI, YUJI;GOMI, SADAHIRO;ISHIKAWA, HIDEAKI
