JP7328262B2 - 複合材料とその形成方法、及び無線周波数アイソレータ又はサーキュレータ - Google Patents
複合材料とその形成方法、及び無線周波数アイソレータ又はサーキュレータ Download PDFInfo
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Description
本願は、その全体が参照によりここに組み入れられる2018年6月21日に出願された「小型化アイソレータ及びサーキュレータのための高ビスマスガーネットフェライトと共焼成されるべく設計された低焼成温度誘電材料」との名称の米国仮特許出願第62/687,984号に係る米国特許法第119条(e)の優先権の利益を主張する。
いくつかの実施形態において、酸化チタンは、低温焼成可能外側材料に10重量%までの量で存在する。
いくつかの実施形態において、バナジン酸イットリウム、バナジン酸ガドリニウムの一方又は双方が、低温焼成
・結合器及び他の送信線の挿入損失が、半導体結合器のような他の結合器と比べてかなり低くなる。
・結合の一貫性が増す。
・負荷の熱放散が、柔らかい基板と比べて容易となる。
・サーキュレータが、全フェライト基板ベースのデバイスよりも低損失となる。
・誘電体が温度安定性となり、結合器及びサーキュレータの性能を支援する。
・デバイスのサイズが、必要に応じて高誘電率セラミック誘電体を使用することにより、低減され得る。
・PA及び負荷に対する熱/電力の散逸/熱伝導性
・結合器/フィルタ設計のための等方性誘電体(TTBを除く)
・サイズ低減のための誘電率の範囲(4から100+)
・低い誘電損失(結合器/フィルタ)
・厳しい誘電率公差(結合器/フィルタ/アンテナ)
・温度にわたって安定した誘電率(結合器/フィルタ/サーキュレータ)
・控えめなコスト
・プラスチックの伝導性に起因する不十分な伝導性
・異方性(xy対z方向)
約3~10に限定される誘電率
・高い損失
・緩い公差
・温度にわたる不安定性
様々な量のAl2O3、TiO2及びGdVO4が添加されたBiVO4のサンプルが用意され、X線回折によって分析されて当該異なるサンプルに存在する相が決定された。試験サンプルに存在する観測された相は、以下の表2にまとめられる。
Claims (24)
- 無線周波数コンポーネントとして使用される複合材料であって、
ガーネット又は灰重石構造を有する低温焼成可能外側材料と、
前記低温焼成可能外側材料の中に配置された30を上回る誘電率を有する高誘電性内側材料と
を含み、
前記低温焼成可能外側材料と前記高誘電性内側材料とは一体型磁性/誘電性アセンブリを形成し、
前記低温焼成可能外側材料はBiVO 4 を含む、複合材料。 - 前記高誘電性内側材料は円板状の形状であり、前記低温焼成可能外側材料はリング状の形状である、請求項1の複合材料。
- 前記低温焼成可能外側材料はBiVO4とAl2O3との組み合わせを含む、請求項1の複合材料。
- 前記低温焼成可能外側材料は20~80の誘電率を有する、請求項3の複合材料。
- 前記Al2O3は約6重量%までの量で前記低温焼成可能外側材料に存在する、請求項3の複合材料。
- Bi4V2O11が前記BiVO4とは別個の相として前記低温焼成可能外側材料に存在する、請求項3の複合材料。
- 前記低温焼成可能外側材料はさらに、バナジン酸イットリウム、バナジン酸ガドリニウム又は二酸化チタンのうちの一以上を含む、請求項3の複合材料。
- 前記二酸化チタンは10重量%までの量で前記低温焼成可能外側材料に存在する、請求項7の複合材料。
- バナジン酸イットリウム、バナジン酸ガドリニウムの一方又は双方が前記低温焼成可能外側材料において前記BiVO4と固溶体を形成する、請求項7の複合材料。
- 前記二酸化チタンは前記BiVO4とは別個の相として前記低温焼成可能外側材料に存在する、請求項7の複合材料。
- 前記バナジン酸ガドリニウムは50重量%までの量で前記低温焼成可能外側材料に存在する、請求項7の複合材料。
- Bi4V2O11及びBiVO4が別個の相として前記低温焼成可能外側材料に存在する、請求項7の複合材料。
- Bi4V2O11、BiVO4及びBi2Ti4O11が別個の相として前記低温焼成可能外側材料に存在する、請求項12の複合材料。
- Bi4V2O11、BiVO4、Bi2Ti4O11及びTiO2が別個の相として前記低温焼成可能外側材料に存在する、請求項13の複合材料。
- Bi4V2O11及びGdVO4が別個の相として前記低温焼成可能外側材料に存在する、請求項7の複合材料。
- 無線周波数デバイスにおいてアイソレータ又はサーキュレータとして使用される複合材料を形成する方法であって、
ガーネット又は灰重石構造を有する低温焼成可能外側材料を与えることと、
30を上回る誘電率を有する高誘電性内側材料を前記低温焼成可能外側材料のアパチャの中に入れることと、
前記低温焼成可能外側材料と前記高誘電性内側材料とを一緒に650~900℃の温度で共焼成して前記高誘電性内側材料の外面まわりに前記低温焼成可能外側材料を収縮させ、接着剤又はのりを使用することなく一体型磁性/誘電性アセンブリを形成することと
を含み、
前記低温焼成可能外側材料はBiVO 4 を含む、方法。 - 前記低温焼成可能外側材料はBiVO4とAl2O3との組み合わせを含み、
前記Al2O3は約6重量%までの量で前記低温焼成可能外側材料に存在し、
Bi4V2O11は前記BiVO4,とは別個の相として前記低温焼成可能外側材料に存在し、
前記低温焼成可能外側材料はさらに、バナジン酸イットリウム、バナジン酸ガドリニウム又は二酸化チタンのうち一以上を含み、
前記二酸化チタンは10重量%までの量で前記低温焼成可能外側材料に存在し、
バナジン酸イットリウム、バナジン酸ガドリニウムの一方若しくは双方が前記低温焼成可能外側材料において前記BiVO4と固溶体を形成し、
前記二酸化チタンは前記BiVO4とは別個の相として前記低温焼成可能外側材料に存在し、
前記バナジン酸ガドリニウムは50重量%までの量で前記低温焼成可能外側材料に存在し、
Bi4V2O11及びBiVO4が別個の相として前記低温焼成可能外側材料に存在し、
Bi4V2O11、BiVO4及びBi2Ti4O11が別個の相として前記低温焼成可能外側材料に存在し、
Bi4V2O11、BiVO4、Bi2Ti4O11及びTiO2が別個の相として前記低温焼成可能外側材料に存在し、又は、
Bi4V2O11及びGdVO4が別個の相として前記低温焼成可能外側材料に存在する、請求項16の方法。 - 無線周波数アイソレータ又はサーキュレータであって、
ガーネット又は灰重石構造を有する低温焼成可能外側材料と、
前記低温焼成可能外側材料の中に配置された30を上回る誘電率を有する高誘電性内側材料と
を含み、
前記低温焼成可能外側材料と前記高誘電性内側材料とは、一体型磁性/誘電性アセンブリを形成し、
前記低温焼成可能外側材料はBiVO 4 を含む、無線周波数アイソレータ又はサーキュレータ。 - 前記低温焼成可能外側材料は、BiVO 4 とAl 2 O 3 との組み合わせを含む、請求項18の無線周波数アイソレータ又はサーキュレータ。
- 前記Al 2 O 3 は約6重量%までの量で前記低温焼成可能外側材料に存在し、又は
Bi 4 V 2 O 11 が前記BiVO 4 とは別個の相として前記低温焼成可能外側材料に存在する、請求項19の無線周波数アイソレータ又はサーキュレータ。 - 前記低温焼成可能外側材料はさらに、バナジン酸イットリウム、バナジン酸ガドリニウム又は二酸化チタンのうちの一以上を含む、請求項19の無線周波数アイソレータ又はサーキュレータ。
- 前記二酸化チタンは10重量%までの量で前記低温焼成可能外側材料に存在し、
バナジン酸イットリウム、バナジン酸ガドリニウムの一方又は双方が前記低温焼成可能外側材料において前記BiVO 4 と固溶体を形成し、
前記二酸化チタンは前記BiVO 4 とは別個の相として前記低温焼成可能外側材料に存在し、
前記バナジン酸ガドリニウムは50重量%までの量で前記低温焼成可能外側材料に存在し、
Bi 4 V 2 O 11 及びBiVO 4 が別個の相として前記低温焼成可能外側材料に存在し、
Bi 4 V 2 O 11 及びGdVO 4 が別個の相として前記低温焼成可能外側材料に存在し、
Bi 4 V 2 O 11 、BiVO 4 及びBi 2 Ti 4 O 11 が別個の相として前記低温焼成可能外側材料に存在し、又は
Bi 4 V 2 O 11 、BiVO 4 、Bi 2 Ti 4 O 11 及びTiO 2 が別個の相として前記低温焼成可能外側材料に存在する、請求項21の無線周波数アイソレータ又はサーキュレータ。 - 電子機器デバイスモジュールに含まれる請求項18から22のいずれか一項の無線周波数アイソレータ又はサーキュレータ。
- RF電子機器デバイスに含まれる請求項18から22のいずれか一項の無線周波数アイソレータ又はサーキュレータ。
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