Low Loss Combiners

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89 Leuning Street  
South Hackensack, NJ 07606  
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+1 (201) 342-3338 phone  
+1 (201)-342-3339 fax  
 
89 Leuning Street  
South Hackensack, NJ 07606  
USA  
 
Technical Support  
 
 
+1 (201) 342-3338 phone  
+1 (201)-342-3339 fax  
 
89 Leuning Street  
South Hackensack, NJ 07606  
USA  
 
 
      Low Loss Combiner LLC-1900-IN-10
                
       
       
         
  LLC1900IN10 TopView  
  • Low Loss Combining
  • Narrow Guard Band
  • High Reliability Design
  • High Power Handling
  • Cascadable  for higher levels of combining
  • Excellent Filter Response
  • Occupies only 1.5U of Rack Space
  • Built-In Software
  • Control via Ethernet TCP/IP
  • Duplex (Tx/Rx) Bandstop Port with AISG 2.0 compliant DC pass-through
  • Tx Only Bandpass Port (10 MHz) with DC Block

 

Overview

 

 CCI’s PCS "0 MHz" Guard Band Low Loss Combiner (LLC) combines a 10 MHz band pass port with a synchronously tuned 10 MHz band stop port onto a single feeder without the insertion loss normally associated with passive combiners.  The band pass port accomodates two (2) contiguous UMTS Carriers, one (1) 10 MHz LTE Carrier or up to six (6) contiguous NB-CDMA Cariers to be combined with either GSM, NB-CDMA, UMTS or LTE Carrier(s) on the band stop port.  Utilizing precisely matched filters allows the placement of the Carrier(s) of the Bandpass (TX Only) to be positioned anywhere in the band while providing high rejection of unwanted spurious emissions and noise.  The combining of LTE/LTE, UMTS/LTE & NB-CDMA/LTE, in most cases (LTE Carrier must be 10 MHz or wider), can be accomplished with zero (0) effective guard band, by leveraging the inherent guard bands of each technology (see Application Examples on Pages 3 thru 5).  Additionally, the transmit paths are fully isolated to prevent intermodulation products.  


Once the combiner is tuned, no power is required, effectively becoming a pure passive low-loss filter combiner.  Control (when powered) is via TCP/IP (Ethernet), requiring only a web browser to tune the Bandpass to the desired Cennter Frequency.  All software is resident internally, no extra software or controller is required. 

The unit is housed in a single rack-mounted 19” by 1.5U assembly and can be used with additional CCI components, including Diplexers, Triplexers, Quadplexers, Pentaplexers, Duplexers, Dual Duplexers, DTMAs & Receive Multicouplers for further feeder line reduction.

Electrical

RF Parameters Ports Frequency(MHz) Specification
Return Loss Bandstop 1930 - 1990 18 dB min.
Bandpass 1930 - 1990 18 dB min.
ANT 1930 - 1990 18 dB min.
Insertion Loss Bandstop to ANT 1930 to (fc - 5) 0.15 dB typ.
(fc +5) to 1990 0.15 dB typ.
Bandpass to ANT (fc - 5) to (fc + 5) 0.6 dB typ.
Isolation Bandstop to Bandpass 1930 to (fc -5) 30 dB min., 35 dB typ. 
(fc - 5) to (fc + 5) 25 dB min., 28 dB typ.
(fc +5) to 1990 30 dB min., 35 dB typ.
Tuning Range (Bandpass) Any center frequency (fc) between 1935 - 1985 MHz, in 100 kHz steps
Filter Range (Bandpass) Any 10 MHz block starting at 1930 MHz up to and including any 10 MHz block ending at 1990 MHz
General Characteristics  
Impedance 50 ohms
Guard Band:  
GSM/UMTS Combining 700 kHz each side of Bandpass required
UMTS/UMTS Combining "0" Guard Band required
UMTS/LTE Combining "0" Guard Band required for 10 MHz or greater LTE carrier
LTE/LTE Combining "0" Guard Band required for 10 MHz or greater LTE carrier
CDMA/LTE Combining "0" Guard Band required for 10 MHz or greater LTE carrier (assumes six (6) contiguous, standard NB-CDMA Channels)
Group Delay variation 50 nS typ.
Continuous Average Power 500 W max. (all ports)
Peak Envelope Power 2 kW max. (all ports)
IMD <-110 dBm (-153 dBc) typical (2 × +43 dBm tones) all bands
DC Pass Current/AISG Pass
(Bandstop port to ANT port)
3A/AISG signal (2.176 Mhz) per AISG 2.0

 

  LLC1900IN10 GSM UMTS Alternate
  GSM/UMTS Combining: 700 kHz guard band required
  LLC1900IN10 UMTS UMTS Alternate
  UMTS/UMTS Combining: "0"guard band required
  LLC1900IN10 UMTS LTE Alternate
  UMTS/LTE Combining: "0"guard band required for 10 MHz or greater LTE carrier
  LLC1900IN10 LTE LTE Alternate
  LTE/LTE Combining: "0"guard band required for 10 MHz or greater LTE carrier
  LLC1900IN10 CDMA LTE Alternate
  CDMA/LTE Combining: "0"guard band required for 10 MHz or greater LTE carrier

Environmental

Operating Temperature   0˚C to +55˚C
Enclosure Indoor
Lightning Protection Surge > 30 KA, 20 KA Mult, Res. Pulse < 250 uJ

Mechanical

Connectors   3 × 7-16 DIN female
Data Connection RJ45 Ethernet
Alarm Connection 6 pin Molex connector (4.2 mm)
Power Connection 2 pin Molex connector (4.2 mm)
DC Power Requirement 2A @ +24VDC (only required when tuning)
DC Voltage ±18 to ±76 VDC
Dimensions (body only)(H×W×D) 2.59 × 17.5 × 13.41 in. (65.79 × 444.5 × 340.61 mm)
Dimensions (incl. connectors and handles)(H×W×D) 2.59 × 19 × 15.3 in. (65.79 × 482.6 × 388.62 mm)
Weight 25.0 lbs (11.34 kg)

 

  LLC1900IN10 Outline
  Low Loss Combiner Outline Drawing

Block Diagram

  LLC1900IN10 BD Alternate
  Low Loss Combiner Block Diagram

Accessories

   

Parts & Accessories

LLC-1900-IN-10 1900 Band Narrow Guard Band Tunable LLC

Certifications

Federal Communication Commission (FCC) Part 15 Class B, CE, CSA US
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89 Leuning Street

South Hackensack, NJ 07606

+1 (201) 342-3338

+1 (201) 342-3339 fax