A distributed amplifier with a simple structure that permits miniaturization of circuit in which the input-side transmission line of the distributed amplifier is constituted by a coplanar line having a signal line and a ground face formed on the upper face of a dielectric substrate and the output-side transmission line of the distributed amplifier is constituted by a microstrip line having a signal line formed on the upper face of the dielectric substrate and a ground face formed on the lower fa...

Two network forming strips are wound to form a distributed resistance-capacitance network roll, each strip being a sheet of dielectric material having a contiguous layer of metal on one side thereof. Two solder termination blocks, one at each end of the network roll, each electrically contact a convoluted length of the edge of a different one of the metal layers, the electrical contacts beginning at the same end of each of the metal layers. The metal layers so contacted form a discrete capacitor...

Interlocking of addresses in a system with parallel processors using a common memory space is managed by maintaining for each processor a record of the lock state of the system. When a processor seeks to initiate a transaction, the transaction is analyzed against the lock state record, and the processor's request for access to an intercommunication bus is transmitted only when the lock state of the system is in condition to process the transaction. By monitoring and analyzing bus transactions, t...

Distributed constant RC network apparatus is provided in accordance with this invention having a pair of complex attenuation poles which reside on the plane defined by the complex angular frequency s=.gamma.+j.omega.. According to this invention a plurality of fundamental circuit means containing various unit elements of a distributed constant RC network are developed. Thereafter, two or more of such plurality of fundamental circuit means may be combined in a predetermined manner to form various...

A function-distributed control apparatus comprises a first bus, a second bus, and at least one base processor element which includes a first main processing unit connected to at least the first bus, a second main processing unit connected to at least the second bus, and a dual-port memory with a mutual interrupt circuit connected to both these main processing units for communications between them. The first bus and the first main processing unit are chiefly for intelligent processing required fo...

In a distributed amplifier adapted to amplify a bandwidth of signals having lower and upper band edge frequencies a parallel R-L-C circuit adapted for antiresonance at the upper band edge frequency is provided in series with at least one of the inductors in the series branches of the grid and plate transmission lines of the amplifier to provide stability to the amplifier. Additionally, another parallel R-L-C circuit adapted for antiresonance at the lower band edge frequency is provided in series...

The invention relates to a variable gain distributed amplifier for use at microwave frequencies, and fabricated in a monolithic microwave integrated circuit format. In the amplifier, the attenuation is varied, based upon digital control of a dual gate segmented FET. The amplifier has a nearly flat insertion phase and amplitude response, and an insertion phase response that varies only slightly between gain settings. The amplifier employs segmented dual gate field effect transistors as the gain e...

A broadband, push-pull distributed amplifier is disclosed, the amplifier stages being individually connected for push-pull operation. The amplifier is capable of Class B or AB operation with high efficiency and low distortion.

A system based on the usage of a Sagnac interferometer operating in a dual sensing mode is described which allows the determination of the location and amplitude of a time varying disturbance on a single fiber.

A two way communication system is described wherein a base unit can transfer information with remotely-located unit such as a portable infrared commuicator. The base unit produces carrier frequency signals to a plurality of distributed transmitter modules which expose different areas to infrared transmissions. A plurality of down-link or base unit associated infrared detection modules are distributed to receive infrared carrier frequency communications from one or more remote or portable units a...