TH20223B - Management of duplex passes - Google Patents

Abstract

The invention involved manipulation (20) for duplex transmission in a radio or similar with a transmitter (1) and a receiver (2). ) Receiver filter (4) and in good form it is a transmitter / receiver device (5) where the receiver filter (4) consists of a part called a SAW (Surface Acoustic Wave Filter-) filter. The sonic filter (surface) and the transmitter filter (3) and SAW filter (4) are connected through a circulator (6) .The arrangement consists of a power measuring device (7) to be used to measure power in / out. From receiver filters (SAW filters) and power measurement management (7) a feedback signal is provided to the control management. To control the power coming out of the amplifier (8) in front of the filter. Of the transmitter (3)

Claims (2)

1. Handling (10; 20; 30) for duplex transmission in radio or similar. With the transmitter (1) and the receiver (2) where the handling consists of the transmitter filter (3), the receiver filter (4), where the SAW filter (surface wave filter) and in the form That's fine Have transmitter / receiver devices (5), which are fixed or removable, movable. Where is directed by the manner in which the transmitter filter (3) and the SAW filter (4) are connected through a recirculator (6), and the device (10; 20; 30) consists of a power detection arrangement (7) where Which consists of Measurement equipment (7a) is in the process. Recirculator and filter (4) for power monitoring into the SAW filter (3) where the power sensing arrangement (7) connects a power regulator (9) for controlling. The power unit and power amplifier (8) in front of the transmitter filter (3) 2.The arrangements described in claim 1, where directed by the manner in which power measurement arrangements (7) will Adapted to the transmitter power of the power amplifier (8) if it is dropped from transmitter (1) to receiver (2) below the premature level 3. Handling as stated in claim 1. Or any of the two Where directed by the manner in which the sender filter (3) consists of a part called Traditional ceramic filter 4. Handling as described in either Clause 1 or 2. Where directed by The manner in which the transmitter filter (3) consists of a section called Helical filter 5. Handling as specified in any of the claims. According to the above claims Where directed by the manner that Power measurement management (7a, 7b) includes connectors One direction (7a, 7b) can be set at least. 6. Arrangement as specified in any of the claims. According to the above claims Where directed by the manner that The power measuring device consists of one directional connector (7a) between the recirculator (6) and the SAW filter (3) and a set connector. The second possible direction (7b) is in front of the transmitter filter (3) 7. Arrangement according to one of Clause 1-5. Where directed by the manner that the power measurement management consists of one directional connector (7a) between the recirculator and the SAW filter and a second directional connector (7b) between the filters of the SAW filter. Transmitter (3) and circulator (6) 8. Arrangement as set out in any Clause 6 or 7, directed by the manner that Two directional connectors Is between the power amplifier and Transmitter filter (7b) 9. Handling as set out in any of the claims. According to the above claims Where directed by the manner that The power regulator (9) consists of a section called the PI controller which controls the power exiting the power amplifier (8) 1 0. Handling as stated in one of the claims. According to the above claims Where is directed by the manner that the recirculator (6) has an approx. 0.8 dB reduction in signal strength and a retrograde separation. In the previous scheme it is greater than 12 dB 1. 1. Arrangement as set out in any of the Claims. According to the above claims Where directed by the manner that The transmitter / receiver device (5) consists of an antenna, cable or the like. 2. Arrangement as set out in Clause 11, where directed by the manner that The inputs and outputs respectively between the transmitter, receiver and antenna are loaded with impedance. That are approximately 50 omega