The utility model provides for Ku band satellite TV signal tuner, including high frequency adapter and adapter seat, wave guide tube, a wave collector and a circuit box. Chip unit, high frequency amplifier, band-pass filter, BPF gain selection unit, the frequency selection unit, crystal oscillator circuit switching unit, signal conversion unit and a three terminal voltage regulator circuit unit comprises a control circuit board mounting circuit box. The received Ku band satellite RF signal is amplified by the high frequency amplifying circuit, and is connected with the BPF band pass filter and output the intermediate frequency IF signal to the high frequency switching head via the control chip unit. The advantages are: due to the vibration, mixer, if amplifier is integrated in the control chip, high stability, lower power consumption, to ensure the quality of the output signal, we can choose different frequency and different output gain, reduce the difficulty of design and production engineering, engineering design and improve the production efficiency, prolong the tuner the service life.
【技術實現步驟摘要】
【技術保護點】
一種用于接收Ku波段衛星電視信號的高頻頭,包括高頻轉接頭(1)及其轉接頭座(2)、導波筒(4)、集波器(6)和電路盒(3),所述電路盒(3)內安裝有電路板(7),所述電路板(7)包括高頻放大單元(8)和BPF帶通濾波器(9),其特征在于:所述電路板(7)還包括控制芯片單元(10)、晶體振蕩電路單元(11)、增益選擇單元(12)、本振頻率選擇單元(13)和切換信號轉換單元(15);所述高頻放大單元(8)與所述BPF帶通濾波器(9)和所述控制芯片單元(10)依次相連,所述晶體振蕩電路單元(11)、增益選擇單元(12)、本振頻率選擇單元(13)和切換信號轉換單元(15)分別與所述控制芯片單元(10)相連,所述控制芯片單元(10)與所述高頻放大電路(8)相連,接收的Ku波段衛星RF信號經所述高頻放大電路(8)放大后,接BPF帶通濾波器(9)并經所述控制芯片單元(10)輸出中頻IF信號至所述高頻轉接頭(1)。
【技術特征摘要】
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