FREQUENCY-DIVISION DEVICE Russian patent published in 2005 - IPC

FIELD: radio engineering.

SUBSTANCE: proposed device provides for maximal possible decoupling of transceivers (adjacent-channel signal suppression being minimum 60 dB) at minimal loss of useful signal (not over 1.5 dB) and for matching each channel in passband with standing-wave ratio not worse than 1.25 at antenna rated resistance Ra = 50 Ohms. Each band filter is mounted in metal case accommodating printed-circuit board on foiled reinforced fluoroplastic that carries solid-state short-circuited stubs on high-quality ceramic substrates having relative dielectric constant ε = 40 and interconnected by long lines of two types, that is, low-resistance ones built around coaxial line sections and high-resistance lines built around spirals whose parameters are distributed relative to case. All band filters are rigidly fixed on common platform, angles between every two adjacent filters being equal.

EFFECT: ability of simultaneous operation of three transceivers connected to single antenna in duplex mode.

1 cl, 2 dwg