LOW-NOISE L-BAND AMPLIFIER.

Device characterization, circuit design, and stripline evaluation are topics presented. Developing satisfactory characterization techniques at microwave frequencies and providing data for amplifier design are objectives. -Circuit design amplitude and phase requirements maximum flat amplitude and time delay responses are discussed. Conclusion, overall response approximates a Butterworth Thompson characteristic with poles in intermediate positions between maximum flat amplitude and maximum flat time delay positions. -L-37 mesa and L-78 planar transistors were evaluated for power gain and stability in the 1.3 Gc region. Conclusion, only the common base configuration can provide adequate gain at this frequency. -Several stripline techniques are described, but a polyethyline dielectric with manually cut copper strips is preferable for experimental work. -Single and multiple stub filters have been developed for use as coupling and bandshaping networks in the amplifier. Author