Cross-polar and co-polar transceiver
View Patent ↗A transceiver allowing transmission of a co-polar transmit signal and simultaneous reception of co-polar receive and cross-polar receive signals. An integrated orthogonal mode transducer and diplexer module containing a plurality of filters between a feed port, co-polar transmission port, co-polar reception port and cross-polar reception port is mounted within the transceiver housing with the feed port aligned with or forming the feed flange of the transceiver. A transmitter printed circuit board is aligned with the transmission waveguide port and a receiver printed circuit board is aligned with the co-polar reception and cross-polar reception ports of the integrated orthomode transducer and diplexer module.
1. A transceiver with cross-polar, co-polar receive and co-polar transmit, comprising:
an enclosure with a receiver cavity and a transmitter cavity;
an orthomode transducer and diplexer module with a plurality of waveguides and filters between a feed port, a co-polar transmission port, a co-polar reception port and a cross-polar reception port;
the orthomode transducer and diplexer module mounted within one of the receiver cavity and the transmitter cavity;
a transmitter printed circuit board mounted in the transmitter cavity aligned with the co-polar transmission port; and
a receiver printed circuit board mounted in the receiver cavity aligned with the co-polar reception port and cross-polar reception port.
2. The transceiver of claim 1 , wherein the integrated orthomode transducer and diplexer module has two pieces.
3. The transceiver of claim 1 , wherein the integrated orthomode transducer and diplexer module is coupled to a feed flange; the feed flange aligned with the feed port.
4. The transceiver of claim 1 , wherein the integrated orthomode transducer and diplexer feed port is a feed flange for the transceiver.
5. The transceiver of claim 1 , further including a receiver cavity cover covering the receiver cavity and a transmitter cavity cover covering the transmitter cavity.
6. The transceiver of claim 1 , wherein the plurality of filters in the orthomode transducer and diplexer module consists of a cross-polar transmit reject filter, a co-polar transmit reject filter, and a co-polar receive reject filter.
7. The transceiver of claim 1 , wherein at least one of the plurality of filters is formed in sidewalls of the waveguides.
8. The transceiver of claim 1 , wherein at least one of the plurality of filters is formed by a cross section of the waveguide.
9. The transceiver of claim 1 , wherein the co-polar transmission port is formed on one side of the orthomode transducer and diplexer module and the co-polar reception port and the cross-polar reception port are formed on an opposite side of the orthomode transducer and diplexer module.
10. The transceiver of claim 1 , wherein the enclosure has heat sinks formed on an exterior surface.
11. The transceiver of claim 1 , wherein the plurality of waveguides interconnects the feed port, the co-polar transmission port, the co-polar reception port and the cross-polar reception port.
12. The transceiver of claim 1 , wherein the orthomode transducer and diplexer module is fastened to the enclosure along a single plane of connection.
13. A method of manufacturing a transceiver, comprising the steps of:
molding an enclosure with a receiver cavity and a transmitter cavity;
molding an orthomode transducer and diplexer module incorporating an orthomode transducer, a diplexer and a plurality of filters between a feed port, co-polar transmission port, co-polar reception port and cross-polar reception port;
mounting the orthomode transducer and diplexer module within the receiver or transmitter cavity;
mounting a transmitter printed circuit board in the transmitter cavity, aligned with the co-polar transmission port; and mounting a receiver printed circuit board in the receiver cavity aligned with the co-polar reception port and cross-polar reception port of the integrated orthomode transducer and diplexer module.
14. The method of claim 13 , wherein the orthomode transducer and diplexer module has two diecast pieces.
15. The method of claim 13 , further including the step of enclosing the transmitter cavity with a transmitter cavity cover and the receiver cavity with a receiver cavity cover.
16. The method of claim 13 , wherein the molding is metal alloy die casting.
17. The method of claim 13 , wherein the molding is plastic injection molding.
18. The method of claim 17 , further including the step of coating the surface of the enclosure and the orthomode transducer and diplexer module with a conductive material.
19. The method of claim 17 , wherein the plastic injection molding is performed using a thermally conductive plastic material.
20. The method of claim 17 , wherein metal inserts are included in the plastic injection molding.