宽带AB级混合耦合放大器(470-860 MHz)与两个均衡晶体管BLV57APPLICATION NOTEA wide-band class-AB hybrid coupled amplifier (470 860 MHz) with two balanced transistors BLV57NCO8205Philips SemiconductorsA wide-band class-AB hybrid coupled amplier Application Note (470 860 MHz) with two balanced transistors BLV57 NCO8205CONTENTS 1 2 3 3.1 3.2 3.3 3.4 3.5 4 4.1 4.2 5 SUMMARY INTRODUCTION DESIGN OF THE AMPLIFIER General remarks Bias circuit Some properties of the BLV57 Input and output circuit Hybrid coupled amplifier MEASURED PERFORMANCE Gain and return losses Output power CONCLUSION1998 Mar 232Philips SemiconductorsA wide-band class-AB hybrid coupled amplier (470 860 MHz) with two balanced transistors BLV571 SUMMARYApplication Note NCO8205For application in TV transmitters in band 4/5 a wideband linear power amplifier has been……
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