JP6488985B2 - 高周波モジュール - Google Patents
高周波モジュール Download PDFInfo
- Publication number
- JP6488985B2 JP6488985B2 JP2015209908A JP2015209908A JP6488985B2 JP 6488985 B2 JP6488985 B2 JP 6488985B2 JP 2015209908 A JP2015209908 A JP 2015209908A JP 2015209908 A JP2015209908 A JP 2015209908A JP 6488985 B2 JP6488985 B2 JP 6488985B2
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- wire
- ground
- frequency module
- signal
- power amplifier
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- H03—ELECTRONIC CIRCUITRY
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- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10098—Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas
Description
まず、高周波モジュール1の回路構成について、説明する。
上記実施の形態では、グランドワイヤ70が接続されるグランド電極80は略矩形状としたが、グランド電極の形状は略矩形状に限定されず、例えば、略矩形状の一部に凹部が形成された形状であってもかまわない。以下、変形例1に係る高周波モジュールとして、このようなグランド電極を有する高周波モジュールを例に説明する。なお、本変形例及び以降の各変形例において、高周波モジュールの回路構成は上記実施の形態と同様のため、その説明を省略する。
上記実施の形態及び変形例1では、グランドワイヤ70が接続されるグランド電極80はサーマルビア52に接続されるパターン導体によって形成されるとしたが、グランド電極はサーマルビア52に接続されるパターン導体とは異なるパターン導体によって形成されていてもかまわない。以下、変形例2に係る高周波モジュールとして、このようなグランド電極を有する高周波モジュールを例に説明する。
上記実施の形態ならびに変形例1及び2では、グランドワイヤ70の両端が同一のパターン導体によって形成されるグランド電極80に接続されるとしたが、当該両端は異なるパターン導体によって形成されるグランド電極に接続されてもかまわない。以下、変形例3に係る高周波モジュールとして、このようなグランド電極を有する高周波モジュールを例に説明する。
上記実施の形態及び変形例1〜3では、グランドワイヤ72は複数の信号用ワイヤ62を跨いで配置されるとしたが、複数の信号用ワイヤ62の各々を跨いでグランドワイヤが配置されてもかまわない。以下、変形例4に係る高周波モジュールとして、このようなグランドワイヤを有する高周波モジュールを例に説明する。
上記実施の形態及び変形例1〜4では、多層基板50の平面視においてグランドワイヤ70が信号用ワイヤ60と交差するとしたが、グランドワイヤは信号用ワイヤ60を跨いで配置されていればよく、当該平面視において交差せずに配置されていてもかまわない。以下、変形例5に係る高周波モジュールとして、このようなグランドワイヤを有する高周波モジュールを例に説明する。
上記実施の形態及び変形例1〜5では、MMIC40から出力される高周波信号を伝搬する伝送路である信号用ワイヤを跨ぐグランドワイヤ70を配置することにより、高周波モジュール外部への高調波の放射を低減できることについて説明した。しかし、同様の技術は、上記の伝送路としてパターン導体が用いられる構成に適用することもできる。以下、変形例6に係る高周波モジュールとして、このような伝送路を有する高周波モジュールを例に説明する。
以上、本発明の実施の形態及びその変形例に係る高周波モジュールについて説明したが、本発明は、個々の実施の形態及びその変形例には限定されない。本発明の趣旨を逸脱しない限り、当業者が思いつく各種変形を本実施の形態及びその変形例に施したものや、異なる実施の形態及びその変形例における構成要素を組み合わせて構築される形態も、本発明の一つまたは複数の態様の範囲内に含まれてもよい。
10 パワーアンプ
20 高調波終端回路
30 整合回路
40 MMIC
50 多層基板
52 サーマルビア
60〜62 信号用ワイヤ
70、70D、70E、71、72、72D、72E グランドワイヤ
80、80A、80Ba、80Bb、80C、80E、280 グランド電極
80a 凹部
140〜142、150〜152 パッド電極
260 パターン導体
Claims (5)
- 回路基板と、
前記回路基板の上面に実装される高周波部品と、
前記高周波部品から出力される高周波信号を伝搬する伝送路であり、前記高周波部品と前記回路基板とを電気的に接続し、前記回路基板から露出している信号用ワイヤと、
前記回路基板の前記上面に形成された、単一のパターン導体であるグランド電極と、
両端が前記グランド電極に接続されるグランドワイヤと、を有し、
前記高周波部品は、前記回路基板側の実装面と、前記実装面と対向する天面と、を有するパワーアンプであり、
前記パワーアンプは、前記天面上に、前記パワーアンプから高調波終端回路に高周波信号を出力するための第1パッド電極と、前記パワーアンプから整合回路に高周波信号を出力するための第2パッド電極と、を有し、
前記回路基板は、前記回路基板の前記上面に、前記高調波終端回路に入力される高周波信号を受け取るための第3パッド電極と、前記整合回路に入力するための高周波信号を受け取るための第4パッド電極とを有し、
前記信号用ワイヤは、
前記第1パッド電極および前記第3パッド電極と接続される第1信号用ワイヤと、
前記第2パッド電極および前記第4パッド電極と接続される第2信号用ワイヤと、を有し、
前記グランドワイヤは、
前記第1信号用ワイヤを跨ぐ第1グランドワイヤと、
前記第2信号用ワイヤを跨ぎ、前記第1グランドワイヤと異なる第2グランドワイヤと、を有し、
前記パワーアンプは、さらに、前記天面に垂直な方向から平面視された場合に、第1辺と、前記第1辺と異なる辺である第2辺と、を有し、
前記第1信号用ワイヤは、前記パワーアンプの前記第1辺を跨ぎ、
前記第2信号用ワイヤは、前記パワーアンプの前記第2辺を跨ぐ、
高周波モジュール。 - 前記平面視において、前記第1グランドワイヤは前記第1信号用ワイヤと交差し、前記第2グランドワイヤは前記第2信号用ワイヤと交差する、
請求項1に記載の高周波モジュール。 - 前記回路基板は、前記高周波部品で発生した熱を、当該回路基板を介して放熱させるためのサーマルビアを有し、
前記サーマルビアは、前記グランド電極に接続される
請求項1または2に記載の高周波モジュール。 - 前記第2信号用ワイヤは、前記パワーアンプで増幅された所定の帯域の前記高周波信号を伝搬する
請求項1〜3のいずれか1項に記載の高周波モジュール。 - 前記第1信号用ワイヤは、前記パワーアンプで増幅された所定の帯域のn倍波(nは2以上の整数)の前記高周波信号を伝搬する
請求項1〜3のいずれか1項に記載の高周波モジュール。
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