Electronic Components Blog

Thursday, 20 June 2013 13:38

GSM/UMTS Rejection JTIDS/MIDS Passband Filter

GSM/UMTS Rejection JTIDS/MIDS Passband Filter

The L-band spectrum has become congested with military (JTIDS/MIDS, SSR, B-AMC, DME, UAT, etc.) and wireless (GSM/UMTS) communication platforms, leading in some scenarios to severe interference. K&L Microwave has developed a unique highpass filter, 7HP-960/X1215-O/O, with particularly sharp roll-off to mitigate such interference.

 The design utilizes several technologies to optimize the unloaded "Q" to volume ratio and realizes 3 zeroes at DC and 6 finite zeroes. Possible uses include reducing the out-of-band emissions of military transmitters at commercial mobile