大氣電波,學術上叫無線電頻譜或者無線電波譜,係指3Hz到300GHz嘅無線電電磁波(即係無線射頻)嘅波譜,屬電磁波譜嘅一部份,用途好廣,無論電視機、收音機、手提電話、對講機、無線網絡、雷達都會用到唔同頻率嘅大氣電波。
根據國際電訊聯盟嘅分法,大氣電波可以細分做12個波段,當中第4到12段廣泛用喺電訊用途。
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