论文部分内容阅读
梁式引线混频管的主要优点在于它去除了管壳,并加厚加宽了引线,使器件的寄生电容和引线电感都大为减小,因而它广泛适用于多倍频程宽带混频器及监频器等电路中。同时,由于器件是平面化的,因此,它也是单片集成的基础。 用GaAs材料制作梁式引线混频管与用Si材料相比,明显地减小了器件的串联电阻,具有截止频率高以及半绝缘衬底可以减少工艺步骤等特点。 南京电子器件研究所在制成单管梁式引线混频管后,又在较短的时间内开始研制GaAs四管堆梁式引线混频管管堆。该器件主要用于宽带双平衡器电路。目前研制的7.5～18GHz频段的四管堆具有较小的串联电阻(Rs≤3 Q)和变频损耗(Lc<5.0dB)。其形貌照片如图
The main advantage of the beam lead mixer tube is that it eliminates the package and widens the leads, making the parasitic capacitance and lead inductance of the device significantly reduced, making it suitable for use in a wide range of multi-octave band wideband mixers And supervisors and other circuits. At the same time, because the device is planar, it is also the foundation of monolithic integration. Fabrication of a beam feedthrough tube with GaAs material significantly reduces the series resistance of the device, with a high cutoff frequency, and the fact that semi-insulating substrates reduce process steps, compared to Si materials. Nanjing Institute of Electronic Devices in the single-tube beam lead mixing tube, and in a relatively short period of time began to develop GaAs four-tube stack-beam lead mixed tube reactor. The device is mainly used for broadband dual balancer circuit. The currently developed four-pipe reactor in the 7.5-18 GHz frequency band has a smaller series resistance (Rs ≦ 3 Q) and a variable frequency loss (Lc <5.0 dB). Its appearance photos as shown