Switchable duplex filter

Details Switchable duplex filter Switchable duplex filter

H - Electricity

03

H

H03H 9/46 (2006.01) H01P 1/213 (2006.01) H03H 9/48 (2006.01)

Patent

CA 2185384

The invention relates to a radio frequency filter (4), the band-pass type frequency response (14, 15) of which is controllable in a manner such that it can be movedbetween the transmission frequency (TX') and reception frequency (RX') of the radio equipment. Thus the same filter can be used both as a transmission and receiving filter, provided that the transmission and reception take place at different times. In accordance with the invention, the filter is provided with a change-over switch (5), which connects the filter to the transmitter when the pass band of the filter is in the transmission frequency, and to the receiver when the pass band of the filter is in the reception frequency.

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