JP2006060029A - インダクタを備えた半導体装置 - Google Patents
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- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
- H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
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Abstract
【解決手段】ベースバンド信号で搬送波を変調してRF信号を出力する変調回路と、搬送波を用いてRF信号を復調してベーバンド信号を得る復調回路と、上記搬送波を生成する局部発振回路とを備えた半導体装置において、閉回路配線を有するインダクタが用いられる。閉回路配線によって相互インダクタンスを介して生じる干渉が低減される。例えば、変調回路にインダクタ61、62が用いられる場合、インダクタを囲む外周に閉回路配線63が配置される。
【選択図】図10
Description
上記搬送波を生成する第3の回路とを具備し、上記第1、第2又は第3の回路の少なくともいずれかは、少なくとも1個のインダクタを有し、上記少なくとも1個のインダクタは、上記少なくとも1個のインダクタを囲む閉回路配線を備えていることを特徴とする。
図10に本発明の第1の実施例を示す。本実施例では、変調回路97に干渉低減用配線を備えたインダクタが用いられる。図10において、61,62はインダクタ、63は閉回路配線を成す干渉低減用配線、64は変調器、65a,65bはミキサ、66a,66b,66c,66dはバッファ、67a,67bはベースバンド信号入力端子、68a,68bは搬送波入力端子、69a,69bはRF信号出力端子、70はコンデンサを表す。入力端子67a,67bには、互いに直交するベースバンド信号が入力される。直交するベースバンド信号の各々は、互いに極性が反転した両極性の差動信号である。また、入力端子68a,68bには、それぞれ互いに位相が90度異なる搬送波(局部発振信号)が入力される。搬送波の各々も、互いに極性が反転した両極性の差動信号である。
図11に本発明の第2の実施例を示す。本実施例では、局部発振回路98に干渉低減用配線を備えたインダクタが用いられる。図11において、71はチョークコイルとして作用するインダクタ、72は閉回路配線を成す干渉低減用配線、73は発振器の共振用インダクタ、74は可変容量となるバラクタダイオード、75はコンデンサ、76はトランジスタ、77はトランジスタ76の動作電流を定める可変電流源、78はトランジスタ76への電源電圧、79は周波数制御端子、80は発振器出力端子、81は接地端子を表す。本実施例では、インダクタ(チョークコイル)71が被干渉側となる。
図12に本発明の第3の実施例を示す。本実施例では、変調回路97に干渉低減用配線を備えたインダクタが用いられ、局部発振回路98に同様に干渉低減用配線を備えたインダクタンスが用いられる。そして、変調回路97のインダクタが干渉側となり、局部発振回路98のインダクタが被干渉側となっている。図12において、91はRF可変利得増幅器、92a,92bはベースバンドフィルタ、93a,93bはベースバンド増幅器、94は周波数分周器、95はRF出力端子、96a,96bはベースバンド入力端子、97は変調回路、98は局部発振回路を表す。
Claims (12)
- 第1の信号で搬送波を変調して第1の信号よりも周波数が高い第2の信号を出力する第1の回路と、
上記搬送波を用いて第3の信号を復調し、上記第3の信号よりも周波数が低い第4の信号を出力する第2の回路と、
上記搬送波を生成する第3の回路とを具備し、
上記第1、第2又は第3の回路の少なくともいずれかは、少なくとも1個のインダクタを有し、
上記少なくとも1個のインダクタは、上記少なくとも1個のインダクタを囲む閉回路配線を備えていることを特徴とする半導体装置。 - 上記少なくとも1個のインダクタと上記閉回路配線とが半導体基板上の同一絶縁体層に形成されていることを特徴とする請求項1に記載の半導体装置。
- 上記閉回路配線は、直流電流を流すための配線として用いられていることを特徴とする請求項1に記載の半導体装置。
- 上記少なくとも1個のインダクタは、上記少なくとも1個のインダクタを囲む別の閉回路配線を更に備えていることを特徴とする請求項1に記載の半導体装置。
- 上記閉回路配線は、複数巻きのスパイラル形状を成していることを特徴とする請求項1に記載の半導体装置。
- 上記閉回路配線によって囲まれる内部に上記少なくとも1個のインダクタに加えて少なくとも1個の回路素子が配置されていることを特徴とする請求項1に記載の半導体装置。
- 上記少なくとも1個のインダクタは、上記第1の回路に配置されていることを特徴とする請求項1に記載の半導体装置。
- 上記少なくとも1個のインダクタは、上記第3の回路に配置されていることを特徴とする請求項1に記載の半導体装置。
- 第1の信号で搬送波を変調して第1の信号よりも周波数が高い第2の信号を出力する第1の回路と、
上記搬送波を用いて第3の信号を復調し、上記第3の信号よりも周波数が低い第4の信号を出力する第2の回路と、
上記搬送波を生成する第3の回路とを具備し、
上記第1、第2又は第3の回路の少なくともいずれかは、少なくとも1個のインダクタを有し、
上記少なくとも1個のインダクタは、相互インダクタンスを介して発生する干渉を低減するための配線を備えていることを特徴とする半導体装置。 - 上記配線は、上記少なくとも1個のインダクタを囲む閉回路配線であることを特徴とする請求項9に記載の半導体装置。
- 入力されたベースバンド信号を変調によって無線信号に変換し、入力された上記無線信号を復調によって上記ベースバンド信号に変換する回路を具備し、
上記回路は、少なくとも1個のインダクタを有し、
上記少なくとも1個のインダクタは、相互インダクタンスを介して発生する干渉を低減するための配線を備えていることを特徴とする半導体装置。 - 上記配線は、上記少なくとも1個のインダクタを囲む閉回路配線であることを特徴とする請求項11に記載の半導体装置。
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JP2004240569A JP4541800B2 (ja) | 2004-08-20 | 2004-08-20 | インダクタを備えた半導体装置 |
US11/183,800 US7642618B2 (en) | 2004-08-20 | 2005-07-19 | Semiconductor devices with inductors |
CN200510086083.1A CN100530648C (zh) | 2004-08-20 | 2005-07-19 | 具备电感器的半导体装置 |
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JP2006060029A5 JP2006060029A5 (ja) | 2007-04-12 |
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US8482107B2 (en) | 2009-12-25 | 2013-07-09 | Sony Corporation | Circular shield of a circuit-substrate laminated module and electronic apparatus |
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JP2013229716A (ja) * | 2012-04-25 | 2013-11-07 | Renesas Electronics Corp | 半導体装置 |
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Also Published As
Publication number | Publication date |
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CN1738046A (zh) | 2006-02-22 |
US7642618B2 (en) | 2010-01-05 |
JP4541800B2 (ja) | 2010-09-08 |
CN100530648C (zh) | 2009-08-19 |
US20060038621A1 (en) | 2006-02-23 |
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