Down converter and demodulator using a three port junction

Details Down converter and demodulator using a three port junction Down converter and demodulator using a three port junction

H - Electricity

04

B

H04B 1/26 (2006.01) H03D 3/00 (2006.01) H03D 7/00 (2006.01) H03D 9/04 (2006.01) H04L 27/18 (2006.01) H04L 27/233 (2006.01) H04B 1/30 (2006.01)

Patent

CA 2306072

A down convener for RF signals comprises one three port junction (7) having one input port six for modulated digital RF signals and two output ports (8, 9). The output ports (8, 9) are respectively connected to a power sensor (10, 11). The three port junction (7) comprises a power sputter (16) dividing the signal supply to the input terminal (6) of the two branches, processing means (17, 18, 19, 21, 22, 23, 24) for processing one of the branches and a four port junction device (20) for combining the two branches and for generating two output signals to be supplied to the output terminals (8, 9) of the three port junction (7). The processing means can comprise a delay unit (18) or alternatively a frequency divider (21), a plurality of filters (22, 24) and a frequency multiplicator (23).

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