Abstract: A structure of a high frequency non-reciprocal passive device, such as circulator/isolator and method of installation. The structure includes a substantially rigid lip with cutouts for hot leads to go through. The walls of the cutout are situated in close proximity and symmetrically to the leads. The structure also having mounting holes. The installation process includes a step of putting the structure into a pocket in a carrier wherein a defined amount of a low heat transfer/electrical resistance substance, for example a grease, is located. The size of the lip is larger than the size of the pocket. Therefore the structure is supported on the rim of the pocket, while its portion which is under the lip and having smaller size is located in the pocket. Mounting screws can provide a predetermined pressure to the carrier by the device housing.

Abstract: A structure of a high frequency non-reciprocal passive device, such as circulator/isolator and method of installation. The structure includes a substantially rigid lip with cutouts for hot leads to go through. The walls of the cutout are situated in close proximity and symmetrically to the leads. The structure also having mounting holes. The installation process includes a step of putting the structure into a pocket in a carrier wherein a defined amount of a low heat transfer/electrical resistance substance, for example a grease, is located. The size of the lip is larger than the size of the pocket. Therefore the structure is supported on the rim of the pocket, while its portion which is under the lip and having smaller size is located in the pocket. Mounting screws can provide a predetermined pressure to the carrier by the device housing.

Abstract: A structure according to the present invention relates to the non-reciprocal microwave device such as circulator/isolator and includes the circuit, a ferrite member and a dielectric film. The circuit has three arms, each composed of two branches incorporating multiple strips. The branches are folded over a ferrite and isolated from each other by dielectric films to compose a multi-layer structure coupled with ferrite. The branches and strips are shaped to minimize the overall thickness of layer structure and to avoid triple crossover at intersections. The described assembly method allows maintaining symmetry between the ports of circulator/isolator. The broadband and high power operation of resonant structure is achieved by minimizing the asymmetry and improving the power distribution over the entire ferrite area.

Abstract: A structure according to the present invention relates to the non-reciprocal microwave device such as circulator/isolator and includes the circuit, a ferrite member and a dielectric film. The circuit has three arms, each composed of two branches incorporating multiple strips. The branches are folded over a ferrite and isolated from each other by dielectric films to compose a multi-layer structure coupled with ferrite. The branches and strips are shaped to minimize the overall thickness of layer structure and to avoid triple crossover at intersections. The described assembly method allows maintaining symmetry between the ports of circulator/isolator. The broadband and high power operation of resonant structure is achieved by minimizing the asymmetry and improving the power distribution over the entire ferrite area.

Abstract: An isolator with resistive termination and carbon steel housing wherein required magnetic performance is combined with improved efficiency of transmission of heat from termination to the heat sink. The improvement is achieved due to the copper/aluminum plug that mechanically and electrically connects the soldering base of termination to the base of isolator, which in operation is installed on the heat sink. The plug is pressed into the housing from the base side to provide tight coplanarity tolerance to exposed end of the plug and the base without any secondary machining. The termination is soldered to the opposite end of the plug, which is flush to or slightly above the top surface of the housing. Thus, magnetic flux required for operation of isolator is looped through a material having good magnetic susceptibility, and heat from the termination is transmitted to the heat sink through a material having high coefficient of heat transmission.

Abstract: A structure for a passive microwave device capable of low IMD and high power operation, and adapted for automated assembling and placement is disclosed. The device exhibits a high degree of coplanarity on its mounting surface, as well as a high degree of flatness and alignment between its respective components. The inherent self-aligning qualities of the design are used in conjunction with an assembly fixture that has three or more alignment pins to provide a highly manufacturable and reliable device. Related manufacturing methods and fixturing are also disclosed.

Abstract: An isolator with resistive termination and carbon steel housing wherein required magnetic performance is combined with improved efficiency of transmission of heat from termination to the heat sink. The improvement is achieved due to the copper/aluminum plug that mechanically and electrically connects the soldering base of termination to the base of isolator, which in operation is installed on the heat sink. The plug is pressed into the housing from the base side to provide tight coplanarity tolerance to exposed end of the plug and the base without any secondary machining. The termination is soldered to the opposite end of the plug, which is flush to or slightly above the top surface of the housing. Thus, magnetic flux required for operation of isolator is looped through a material having good magnetic susceptibility, and heat from the termination is transmitted to the heat sink through a material having high coefficient of heat transmission.

Abstract: A structure for a passive microwave device capable of low IMD and high power operation, and adapted for automated assembling and placement is disclosed. The device exhibits a high degree of coplanarity on its mounting surface, as well as a high degree of flatness and alignment between its respective components. The inherent self-aligning qualities of the design are used in conjunction with an assembly fixture that has three or more alignment pins to provide a highly manufacturable and reliable device. Related manufacturing methods and fixturing are also disclosed.

Abstract: A structure for a passive microwave device capable of low IMD and high power operation, and adapted for automated assembling and placement is disclosed. The device exhibits a high degree of coplanarity on its mounting surface, as well as a high degree of flatness and alignment between its respective components. The inherent self-aligning qualities of the design are used in conjunction with an assembly fixture that has three or more alignment pins to provide a highly manufacturable and reliable device. Related manufacturing methods and fixturing are also disclosed.

Abstract: A ferrite structure for non-reciprocal microwave device such as circulator/isolator. The structure includes one or more composite ferrite bodies, each having at least one region of a soft ferrite material and at least one region of a hard ferrite material, and at least two ferrous/ferrite plates. The ferrous/ferrite plates are attached to the composite ferrites so as to contribute to the completion of the magnetic loop via hard and soft ferrite portions of the composite ferrites. The soft and hard ferrite regions are magnetized in the opposite directions. The range of operation is selected to be between the resonant frequencies of soft and hard ferrite materials. With such setting the hard and soft ferrite regions provide the circulation in the same direction. As compared to the state-of-the art devices, the circulators/isolators made according to the present invention incorporate the confined-flux self-magnetized ferrite structure thus eliminating the use of conventional magnets.

Abstract: A structure for a low IMD passive microwave device, adapted for automated assembling and placement. The structure includes sheet metal housing having a bottom portion and a plurality of sides that are bent at 90-degree angle to the bottom portion. In each side there is a flare slot that can receive a tooth of a teeth cover. The structure has the aligning holes, slots and reference points on the entire stack to facilitate and automate the assembly process in manufacturing. The tuning stub resonators of a center conductor have the extended peripheral portions with the aligning half-moon holes. Those extended portions provide the condition when the operation range is maximally separated from the resonant frequency, thus providing the condition for the lower IMD. The housing is attached to a PCB. The input/output ports are formed on the PCB with the contact pads situated on both sides that are electrically connected using the PTHs.

Abstract: The present invention is an RF electromechanical single pole single throw (SPST) switch providing a low loss path for RF signals in closed position and a high impedance path for RF signals in open position. The structure has two reed switches each having an actuator and two contacts with both reed switches electrically connected in parallel and mechanically attached such that one contact in each reed switch is grounded and the another contact connects to the actuators that are also connected together and to an RF input pin.

Abstract: A compact structure for a passive microwave device such as combiner/divider having a microstrip line PCB disposed in a housing with connectorized ends. The structure includes a cover screwed down to a bed in the housing around the PCB. The bed is slanted toward the PCB. A periphery portion of the cover is bent by screws according to the slanted bed. This bend causes stress within proportional limit on a stress-strain curve for the cover material, so the cover tends to spring back. By the trend, the cover's outline edge seals the housing against RF leakage. No any gasket is needed. For better compactness of the structure, push-in type connectors are used. The cover overhangs press-in portions of the connectors. The bed has smooth transition from its wider portions at side walls of the housing to more narrow portions at connectorized ends. The cover has rounded corners. Because of this, the bend action spread from sides to ends and no screws at ends needed, that contribute to compactness of the structure.

Abstract: A structure for a high power low IMD passive microwave device, mainly for automated placement. The structure includes substantially flat housing having slots and a cover having notches. Slots and notches form openings to snugly receive printed circuit boards (PCBs) having signal transmission lines on both sides. Also, on both sides of PCBs opposite to the signal lines, the ground planes are located. The passive device is disposed between the housing and the cover, and electrically connected to the signal transmission lines inside the structure that is totally closed and sturdy. Bottom surface of PCBs and that of the housing are coplanar. PCBs are reinforced on both their sides by supports extended from the housing. Such a structure provides homogeneous leads and best conditions for automated placement. Inductance in signal lines is well balanced by capacitance to ground planes that in combination with structurally homogeneous leads provides low IMD.