Abstract: A self-controlled concentrator for packet-synchronous for fast data packet switching networks has the first bits of the totality of input data packets act on the totality of the switch elements of the concentrator in accordance with the switch positions thereof. The switch elements are beta elements (.beta.), having two inputs and two outputs, whereby 1d n stages of n/2 beta elements (.beta.) each are provided in which n is the number of inputs and outputs of the concentrator. A connecting structure that represents a perfect shuffle is provided between the stages of beta elements. The stages are divided into blocks such that the plurality of blocks increases according to a power of 2, ascending from stage to stage, whereby the plurality of blocks in the first stage is 2.sup.0, that in the second stage is 2.sup.1, etc., whereby n/2 blocks form the last stage to produce a binary tree structure. Dependent on the type of signal pair supplied to it, a beta element (.beta.

Abstract: A sorting unit for a switching node comprising a plurality of digital switching matrix networks for fast, asynchronous packet switching networks, which switching node comprises a multi-stage, mixed connection structure based, for example, on a banyan tree structure, that forms a complete truck group, such that every input of the switching node is connectable to every output thereof. The digital switching matrix networks are fashioned as self-controlling (self-routing) sorting units that are a multi-stage circuit switching arrangement comprising 2m-1 beta element columns of m beta elements (.alpha.) each, whereby 2m is equal to the number of inputs and equal to the number of outputs of the sorting unit, and m is a power to two. The sorting unit is divided into a first sub-unit comprising m columns that functions as a distribution unit and a second sub-unit comprising m-1 columns that functions as a correction unit.

Abstract: A stripline Doppler Radar includes at least one high-frequency oscillator, a first stripline conductor connected to the oscillator, a second stripline conductor spaced from the first stripline conductor, at least one receiving diode connected to the second stripline conductor, an antenna connected to the second stripline conductor, low frequency external electrical terminals, filters connected between the stripline conductors and the external electrical terminals for inhibiting leakage of high-frequency power through the external electrical terminals, and a dielectric resonator adjustable in position from a location between the stripline conductors to a location partially covering one of the stripline conductors for conducting power delivered by the oscillator through the stripline conductors and the dielectric resonator to the receiving diode and the antenna, and for adjusting power radiated through the antenna, power received through the antenna and power transmitted from the oscillator through the resonato