RF circuit modules and integrated chassis with power interface for RF circuit modules
View Patent ↗An RF management system especially suitable for use in CATV head end environments is disclosed. The system is characterized by a basic rack-mountable chassis component that can be configured for both front and rear mount applications, for different cable management solutions and for accepting eighteen passive RF modules or nine active RF modules or a combination of passive and active RF circuit modules. The active configuration of the chassis has an integrated power bus with at least nine connectors for receiving up to nine active RF circuit modules. The active RF circuit modules, such as power supplies and amplifiers are each provided with a “floating” connector for ease in connecting the power supply module or amplifier module to the power bus. The RF power supply module is capable of supplying power to all the active RF modules in the chassis as well as to active RF modules mounted in one or more other chassis in the rack.
1. In combination, a chassis for an RF management system and a plurality of RF modules, said combination comprising:
identical right and left side walls, each side wall having a flange for mounting the chassis to a rack;
identical upper and lower shallow U-shaped brackets connecting the side walls in substantially parallel, spaced relation, each bracket having a plurality of spaced slots therein for mounting a plurality of RF modules between the brackets;
an elongated planar power bus fastened to the upper bracket, said power bus having a plurality of electrically interconnected first connectors mounted thereon in spaced relation for electrically connecting said power bus to said plurality of RF modules;
two support bars connected between the side walls at a location spaced from the brackets; and
fastener means for securing said plurality of RF modules in side-by-side relation to the brackets,
wherein at least one of said plurality of RF modules comprises a power supply having a second connector adapted to connect with one of the plurality of electrically interconnected first connectors for supplying power to the power bus, and wherein said plurality of RF modules are mounted between the upper and lower brackets, and wherein each of said plurality of RF modules includes a housing with guide rails thereon for slidably engaging in the slots of a respective upper and lower bracket, and wherein the second connector is slidably and resiliently mounted to the housing so as to be vertically movable to facilitate engaging said one of the plurality of electrically interconnected first connectors.
2. The combination of claim 1 , wherein the second connector comprises a circuit board with an electrical plug thereon and including a slot in the housing for slidably receiving the circuit board, a leaf spring mounted in the housing for resiliently engaging the circuit board inside the housing.
3. The combination of claim 1 , wherein when one of said plurality of RF modules is a passive RF module said chassis is adapted to receive up to 18 of said passive RF modules, and wherein when said plurality of RF modules are active RF modules said chassis is adapted to receive up to nine of said active RF modules, and wherein said chassis is adapted to receive a combination of said active and said passive RF modules, and wherein said power bus has nine electrically interconnected second connectors mounted thereon.
4. The combination of claim 1 , wherein said plurality of RF modules are active modules comprising a power supply, an amplifier and an RF detector switch.
5. The combination of claim 1 , wherein said plurality of RF modules are passive modules comprising at least one splitter, combiner, directional coupler, filter or equalizer.
6. The combination of claim 1 , wherein said plurality of RF modules comprise a power supply, an amplifier and an RF detector switch.
7. The combination of claim 1 , wherein the RF management system is a head end of a CATV system.
8. The combination of claim 1 , wherein each housing of said plurality of RF modules has a front cover, and wherein the front cover of each of said plurality of RF modules has an LED power indicator and a test point, and a handle.
9. The combination of claim 1 , including captive, spring-biased thumbscrews mounted to each housing for releasably attaching said plurality of RF modules to the chassis.
10. The combination of claim 1 , wherein when each of said plurality of RF modules is an active RF module the housing of each of said active RF modules has a top and a bottom, a pair of guide rails on each of the top and bottom of the housing for engaging in corresponding slots on the brackets of the chassis.