Patent ID: 9590318
Date: 2017-03-07
CPC Classifications: H01P,H01Q,H04B,H05K

Claim:
1. A modular high power, low passive intermodulation (PIM), active, universal distributed antenna system (DAS) interface tray for providing an interface between a base telecommunication station (BTS) and the DAS that can attenuate the signal input radio frequency (RF) power level from the BTS to signal output RF power levels that are harmonious with the requirements of a DAS network while inducing very low PIM levels into the attenuated RF signal, the interface tray comprising: a main chassis; a plurality of RF modules coupled to the main chassis; and a Supervisor Control Power Supply Unit (PSU) module coupled to the main chassis, wherein the RF modules comprise a downlink section comprising a cable switch matrix comprising a set of cable jumpers and a series of stepped attenuators, the set of cable jumpers configurable on a front panel to attenuate the downlink transmit signals received from the BTS based on input RF power levels of the downlink transmit signals received from the BTS to reduce PIM levels.