Abstract: An improved regenerative clocked sampling circuit is described which uses a single clocking signal to switch the circuit between a tracking phase in which the state tracks the input signal, and a bistable phase during which the state rapidly approaches one of two states dependant on the input signal. The same clock signal also isolates the bistable circuit from the input signal source. In a preferred embodiment, these two actions are performed by the same transmission gate or gates connecting the input to the potentially bistable circuit.

Abstract: In a telecommunication network a plurality of transmitting and receiving stations are provided at randomly distributed locations. Routing elements are provided for routing of calls between stations in the network utilizing other stations in the network for relaying of such calls where necessary. Each station incorporates a call routing control unit acting to select a further station to which a call is to be transmitted for the purpose of relaying the call and comprising a memory for compiling, for a plurality of possible destination stations and from information received from further stations within the network within range of the transmitting station, information on possible further stations which may be suitable for relaying calls to the destination stations.

Abstract: A radio frequency feedback amplifier circuit of high linearity within the range of frequencies with which the circuit is to be used includes a high gain amplifier incorporating a bandpass filter in the form of a single resonator which may be tunable, connected in the forward path of the amplifier stage and tuned so that its resonant frequency is at substantially the signal frequency, and a linear passive feedback circuit. A tuning arrangement (64, 65, 66, 67) includes phase detection elements (66), such as a Gilbert cell, for determining the phase shift across the resonator (62) and for adjusting a variable capacitance (64, 65) within the resonator (62) to tune the resonant circuit, in dependence on the frequency of the input to the circuit. Such an amplifier circuit may be used to achieve high linearity and stability at reasonable manufacturing cost, with much greater simplicity than can be achieved using other feedback techniques.

Abstract: A radio frequency feedback amplifier circuit of high linearity within the range of frequencies with which the circuit is to be used includes a high gain amplifier incorporating a bandpass filter in the form of a single resonator which may be tunable, connected in the forward path of the amplifier stage and tuned so that its resonant frequency is at substantially the signal frequency, and a linear passive feedback circuit. A tuning arrangement (64, 65, 66, 67) includes phase detection elements (66), such as a Gilbert cell, for determining the phase shift across the resonator (62) and for adjusting a variable capacitance (64, 65) within the resonator (62) to tune the resonant circuit, in dependence on the frequency of the input to the circuit. Such an amplifier circuit may be used to achieve high linearity and stability at reasonable manufacturing cost, with much greater simplicity than can be achieved using other feedback techniques.

Abstract: In a telecommunication network a plurality of transmitting and receiving stations are provided at randomly distributed locations. Routing elements are provided for routing of calls between stations in the network utilizing other stations in the network for relaying of such calls where necessary. Each station incorporates a call routing control unit acting to select a further station to which a call is to be transmitted for the purpose of relaying the call and comprising a memory for compiling, for a plurality of possible destination stations and from information received from further stations within the network within range of the transmitting station, information on possible further stations which may be suitable for relaying calls to the destination stations.