74F823D現貨可繞華強北一圈74LCX14FT(AE)-【太航半導體】(參加吧,2022已更新)
除去被市場廣泛認知的CIS圖像傳感器業務,韋爾股份也有射頻芯片業務。近年來,公司不斷投資豐富自研產品類型,通過內部研發產品線的整合與協助,持續加大了在射頻及微傳感器領域的產品研發投入,在RFSwitch、Tuner、LNA等產品領域研發出了具有市場競爭優勢的成果。公司射頻產品采用CMOS工藝設計,依靠新設計、新工藝和新材料的結合,突破了傳統的保守的設計思路。多款RFSwitch、LTELNA已實現量產銷售,2020年進一步升級既有產品。Tuner高頻調諧器目前研發進展順利,適應智能穿戴產品的發展需求。此外,公司針對5G應用需求進行研發立項,以確保在5G商用時代到來之際把握住機會,迅速推出應用于5G移動通訊的產品。
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典型的4G手機需要支持約40個頻段,如BBBBBB41等,每個頻段都需要有1路發射和2路接收。發射通路上需要濾波器、功率放大器、開關等,接收通路需要開關、低噪放、濾波器等器件。部分頻段的射頻前端可以共用,在4GLTE頻段劃分中,有部分頻率相近或重合的頻段,可以形成射頻前端器件共用,業界通常將4G頻段劃分為低頻(698~960Mhz),中頻(1710~2200MHz)和高頻(2400~3800MHz),相應的,對應射頻前端器件可以形成低頻模組、中頻模組和高頻模組。5G新增頻段,由于5G增加了新頻段,支持新頻段就需要增加配套的射頻前端芯片。簡化來看,射頻發射通路主要是PA和濾波器。
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據YoleDevelopment數據,預計射頻前端接收模組市場空間將從2018年的25億美元增長到2025年的29億美元,年均復合增長率為2%。功率放大器模組主要指承擔上傳信號功能的射頻模組,包含PA。以手機為例,與通信的過程中,分為上行(上傳)和下行(下載),手機上傳數據需要手機PA將信號放大,***處于接收狀態;下載數據需要方面的PA將信號放大,手機處于接收狀態。功率放大器模組主要是射頻開關、濾波器、PA等芯片產品的排列組合。以Qorvo某款M/HBPA模組為例,在一顆大SiP封裝內,包含有12個濾波器、3個PA、1個控制芯片、1個天線開關和3個射頻開關。據YoleDevelopment數據。