G-Way Microwave / G-Wave BDALTEUC3390C ユーザーズマニュアル

Page | 3  

 

 
The BDA-LTE/UC-33/33-90-C assembly enhances the coverage area of radio 
communications in buildings and RF shielded environments. 
 
The BDA-LTE/UC-33/33-90-C has dual RF paths (Forward / Reverse) to improve 
coverage in two distinct frequency bands.    
 
The unit features low noise figure and wide dynamic range. It is based on a dual 
duplexed path configuration with sharp out of band attenuation allowing improved 
isolation between the receiving and transmitting paths.    

 

Refer to Figure 1 for the following discussion. 
 
The BDA-LTE/UC-33/33-90-C Downlink path receives RF signals from the base 
station, amplifies the signal and transmits the signal into a Distributed Antenna 
System at the direction of the mobiles. The signal travels over a DAS medium that 
then dissipates the signal to the Mobile subscribers. The BDA-LTE/UC-33/33-90-C 
Uplink path receives RF signals at the Mobile side from the DAS system, then 
amplifies it, and transmits the amplified signal to the base station. The Uplink and 
Downlink occupy two distinct dedicated frequency bands, each Uplink and Downlink 
band is 11MHz wide.  
 
For LTE Upper C Band, the frequency allocations are as follows:  
 
 

 MHz 

 MHz 

 
Four diplexers isolate the paths and route each signal to the proper amplifying 
channel. 
 
An Automatic Level Control (ALC) allows for output power limiting. A variable step 
attenuator gives 0 – 30 dB of attenuation in 2 dB steps. The use of these controls is 
covered in the “OPERATION” section, later in this document.