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采用六级VMMK-2503高线性度增益方块级联,插入增益均衡与带通滤波模块,设计了一款小型化线性射频放大器,在5.8～8 GHz频带内,其小信号增益达70 dB,增益平坦度小于±1 dB,输入输出驻波比等技术指标优良。由于VMMK-2503采用晶片级封装技术与内匹配设计,电路设计简单,缩短了研发周期,降低了设计成本,提高了技术指标,有利于射频电路的小型化与集成化,放大器电路尺寸仅为92 mm×9 mm×1.2 mm。并对其进行了模块电磁兼容设计,以提高组件稳定性,最终满足用户要求,已成功用于某型号瞬时测频接收机中。
A six-stage VMMK-2503 high-linearity gain block cascade is inserted into the gain equalization and band-pass filter module to design a miniaturized linear RF amplifier with small signal gain of 70 dB in 5.8-8 GHz band. The gain Flatness less than ± 1 dB, excellent input and output VSWR and other technical indicators. As the VMMK-2503 uses wafer-level package technology and internal matching design, the circuit design is simple, which shortens the R & D cycle, reduces the design cost and improves the technical index, which is beneficial to the miniaturization and integration of the RF circuit. The circuit size of the amplifier is only 92 mm × 9 mm × 1.2 mm. And its electromagnetic compatibility design module in order to improve component stability and ultimately meet user requirements, has been successfully used in a model instantaneous frequency measurement receiver.