Frequenzumsetzereinheit

DE1005045592 A UPAB: 20060523 NOVELTY - A frequency converter comprises a polyphase filter having two inputs, a frequency converter with two outputs and a second polyphase filter coupled to both of these outputs. The filters, either alone or in concert, transmit desired signals and dampen unwanted signals. USE - As a frequency converter (claimed). ADVANTAGE - There is a 15dB improvement compared to commercial front-end receivers