V.Yu. Avdonin, S.N. Boiko, A.V. Isaev
A double-band active integrated microstrip antenna is presented. Embodiment of antenna, circuit representation, frequency dependences SWR of the antenna elements, gain-frequency characteristics, gain factor and noise factor of the low-noise amplifier dependences on the frequency are given in this article. Also polar patterns on the central L1-band and L2-band frequencies by navigation system GLONASS/GPS are presented.