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Title:
スイッチとして平衡ミキサを使用する方法および装置
Document Type and Number:
Japanese Patent JP4499192
Kind Code:
B2
Abstract:
A balanced mixer is used as a switch. In digital mode, the balanced mixer receives a digital mode analog waveform and a local oscillator (L.O.). The balanced mixer mixes the waveform and the L.O. to provide a resultant output signal. In analog mode, the L.O. is modulated to contain the communication information. No analog signal is present on the port of the mixer which received the digital mode analog waveform in digital mode. The desired output of the mixer is the modulated L.O. In order to pass the L.O. through the mixer, a DC bias is applied to one of the waveform terminals of the mixer to unbalance it. A diode attenuator is added to the output of the mixer to provide scaling of the analog mode output.

Inventors:
チャールズ・イー・ホイットリー、ザ・サード
泉山 徹
北村 壮
岡崎 三也
Application Number:
JP1466295A
Publication Date:
July 07, 2010
Filing Date:
January 31, 1995
Export Citation:
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Assignee:
QUALCOMM INCORPORATED
International Classes:
H03D7/00; H03D7/14; H04B1/26; H03C1/54
Domestic Patent References:
JP6209235A
Foreign References:
FI923412A
US5471652
EP0581573A1
Attorney, Agent or Firm:
鈴江 武彦
蔵田 昌俊
河野 哲
中村 誠
福原 淑弘
峰 隆司
白根 俊郎
村松 貞男
野河 信久
幸長 保次郎
河野 直樹
砂川 克
風間 鉄也
勝村 紘
河井 将次
佐藤 立志
岡田 貴志
堀内 美保子
竹内 将訓
市原 卓三
山下 元