{"type":"product","schema_version":"1.0","item_id":"100430126325","canonical_url":"https://tw.bid.yahoo.com/item/100430126325","title":"射頻寬頻放大器 低噪放中功率LNA（0.1-2000MHz增益 30dB) w3 059 [9006748]","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-04-25T07:37:59.040Z","current_price":350,"original_price":null,"stock_status":"low_stock","available_quantity":3,"sold_quantity":0,"seller":{"id":"Y3802229009","name":"BUY360-IC 電子零件","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/499c381b-d6f8-45fb-bbc5-8d3c19d4a7df.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/992e0814-1c8c-443c-8cdb-360747175083.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null}],"description":"buy360-ic\r\n\r\n\t\r\n\t\t \n\r\n\n\r\n\r\n\t \n\r\n\r\n\t\r\n\t\t\r\n\t\t\t射頻寬頻放大器 低噪放 LNA（0.1-2000MHz增益 30dB）\n\n\r\n\t\t\r\n\t\t\t該放大器使用中的一些技巧：\n\n\r\n\t\t\r\n\t\t\t\r\n\t\t\t 1）該放大器在工作頻率小於500MHz時，具有非常好的增益平坦度，仔細調整可以小於1dB。頻率低增益一致性就高。\r\n\t\t\t2）該放大器的工作頻率下限受制於輸入輸出電容，默認為0.1uF，可工作到0.1MHz；可以適當增大輸入輸出電容，以擴展頻率下限，如：10uF時，可以工作到5KHz。如需詳細計算，需注意輸入輸出阻抗為50歐，計算所需電容容值，同時應增強電源供電的去耦和穩壓。\r\n\t\t\t\r\n\t\t\t3）當供電電壓在5-8V變化時，可以作為可變增益放大器，增益隨供電電壓增加而增加。非常適合射頻接收前端電路，用DA控制供電電壓，從而控制放大器的增益，起到自動增益控制。\r\n\t\t\t\r\n\t\t\t4）當供電電壓在8-10V時，低頻端增益達到30dB，此時該放大器具有較低的雜訊係數和較好的穩定性。\r\n\t\t\t\r\n\t\t\t5）當電壓為12V時，增益達到最大值，低頻端增益可達32.5dB。\n\n\r\n\t\t-|-_-|-","shipping_methods":[{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"},{"name":"郵局掛號","fee":0,"currency":"TWD"},{"name":"離島配送","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"2092073513","category_name":"其他耗材","breadcrumb":[{"id":"23336","name":"電腦、平板與周邊","url":"/tw/%E9%9B%BB%E8%85%A6%E3%80%81%E5%B9%B3%E6%9D%BF%E8%88%87%E5%91%A8%E9%82%8A-23336-category.html"},{"id":"2092072621","name":"耗材與線材","url":"/tw/%E8%80%97%E6%9D%90%E8%88%87%E7%B7%9A%E6%9D%90-2092072621-category.html"},{"id":"2092073513","name":"其他耗材","url":"/tw/%E5%85%B6%E4%BB%96%E8%80%97%E6%9D%90-2092073513-category.html"}],"view_count":0,"watch_count":1}