Flexible unified architecture for point-to-point digital microwave radios

Abstract

A transceiver used in a radio unit for wireless communication, comprises: a circuitry board including a transmitter and a receiver; a first connector on a first side of the circuitry board, wherein the first connector is configured to be connected to an interface card; a second connector on a second side of the circuitry board, wherein the second side is opposite the first side and the second connector is configured to be connected to a digital card via a flexible circuit; and a pair of transmit port and receive port located on the second side of the circuitry board, wherein the transmit port is coupled to the transmitter and the receive port coupled to the receiver, respectively. When the transceiver is part of a split-mount radio unit (SRU), the first connector is connected to the interface card and the second connector is not in use. When the transceiver is part of an all-outdoor radio unit (AOU), the second connector is connected to the digital card and the first connector is not in use.

We claim:  
     
       1. A transceiver used in a radio unit for wireless communication, comprising:
 a circuitry board including a transmitter and a receiver; 
 a first connector on a first side of the circuitry board, wherein the first connector is configured to be connected to an interface card; 
 a second connector on a second side of the circuitry board, wherein the second side is opposite the first side and the second connector is configured to be connected to a digital card via a flexible circuit; and 
 a pair of transmit port and receive port located on the second side of the circuitry board, wherein the transmit port is coupled to the transmitter and the receive port is coupled to the receiver, respectively. 
 
     
     
       2. The transceiver of  claim 1 , wherein, when the transceiver is part of a split-mount radio unit (SRU), the first connector is connected to the interface card and the second connector is not in use. 
     
     
       3. The transceiver of  claim 1 , wherein, when the transceiver is part of an all-outdoor radio unit (AOU), the second connector is connected to the digital card and the first connector is not in use. 
     
     
       4. The transceiver of  claim 1 , wherein the first connector and the second connector are configured not to be in use concurrently. 
     
     
       5. The transceiver of  claim 1 , wherein the first connector and the second connector have substantially mirror-imaged locations on the first and second sides of the circuitry board. 
     
     
       6. The transceiver of  claim 1 , wherein the pair of transmit port and receive port are configured to be connected to a pair of transmit port and receive port of a diplexer. 
     
     
       7. The transceiver of  claim 1 , wherein the transmitter further includes a plurality of detectors configured in a serial connection, a circuitry supporting open loop digital pre-distortion and analog adaptive pre-distortion, and a power amplifier. 
     
     
       8. A split-mount radio unit, comprising:
 an indoor unit; and 
 an outdoor unit that is connected to the indoor unit via a cable, wherein the outdoor unit further includes:
 an enclosure including a pair of first and second castings, wherein the first casting includes a heat sink; 
 an interface card mounted on an inside surface of the first casting, wherein the interface card includes a connector on a surface opposite the inside surface of the first casting; 
 a transceiver including a transmitter and a receiver mounted on the inside surface of the first casting, wherein the transceiver includes a first connector on a first side of the transceiver facing the inside surface of the first casting and a second connector and a pair of transmit port and receive port on a second side of the transceiver opposite the first side of the transceiver and the second connector is configured to be connected to a digital card via a flexible circuit, the first connector is connected to the connector of the interface card and the second connector is not in use and the transmit port is coupled to the transmitter and the receive port is coupled to the receiver, respectively; 
 
 a diplexer including a pair of transmit port and receive port on a surface facing the second side of the transceiver and a common port on an opposite surface facing an inside surface of the second casting, wherein the pair of transmit port and receive port of the diplexer are connected to the corresponding pair of transmit port and receive port of the transceiver; and 
 an antenna outside the enclosure, wherein the antenna includes a port connected to the common port of the diplexer through a hole of the second casting. 
 
     
     
       9. The split-mount radio unit of  claim 8 , wherein the cable connecting the indoor unit and the outdoor unit is an RG-8 cable having a length ranging from a few feet up to 1000 feet. 
     
     
       10. The split-mount radio unit of  claim 8 , wherein the first connector and the second connector have substantially mirror-imaged locations on the first and second sides of the transceiver. 
     
     
       11. The split-mount radio unit of  claim 8 , wherein the first connector and the second connector are configured not to be in use concurrently. 
     
     
       12. The split-mount radio unit of  claim 8 , wherein the transmitter further includes a plurality of detectors configured in a serial connection, a circuitry supporting open loop digital pre-distortion and analog adaptive pre-distortion, and a power amplifier. 
     
     
       13. An all-outdoor radio unit, comprising:
 an enclosure including a pair of first and second castings, wherein each of the pair of first and second castings includes a heat sink; 
 a transceiver mounted on an inside surface of the first casting, wherein the transceiver includes a first connector on a first side of the transceiver facing the inside surface of the first casting and a second connector and a pair of transmit port and receive port on a second side opposite the first side of the transceiver; 
 a diplexer including a pair of transmit port and receive port on a first side of the diplexer facing the inside surface of the first casting and a common port on an opposite side of the diplexer facing an inside surface of the second casting, wherein the pair of transmit port and receive port of the diplexer are connected to the corresponding pair of transmit port and receive port of the transceiver; 
 a digital card mounted on the inside surface of the second casting, wherein the digital card includes a hole near its center and a connector on a surface opposite the inside surface of the second casting for connecting to the second connector of the transceiver via a flexible circuit; and 
 an antenna outside the enclosure, wherein the antenna includes a port connected to the common port of the diplexer via a waveguide connection through a hole of the second casting and the hole near the center of the digital card, respectively. 
 
     
     
       14. The all-outdoor radio unit of  claim 13 , wherein the first connector and the second connector have substantially mirror-imaged locations on the first and second sides of the transceiver, respectively. 
     
     
       15. The all-outdoor radio unit of  claim 13 , wherein the first connector and the second connector are configured not to be in use at the same time. 
     
     
       16. The all-outdoor radio unit of  claim 13 , wherein the transmitter further includes a plurality of detectors configured in a serial connection, a circuitry supporting open loop digital pre-distortion and analog adaptive pre-distortion, and a power amplifier.