Analyst Briefing ppt - Linear Signal by fjzhangweiyun

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									Low Cost Smart Antennas for Fixed and
In-Motion Satcom Terminals

Greg Mockett   Founder & President
Karl Warnick   Co-Founder and Chief Scientist
               Associate Professor
               Electrical and Computer Engineering
               Brigham Young University
Ku Band SmartLNBF/BUC Phased Array Feed
   Ku Band or Ka Band
   D = 40 cm to 1.2 m
   f/D = 0.4 to 0.8
   G/T = 19 dB/K (Ku, 1 m reflector)
   Polarization options:
     Tx h-pol, Rx h/v-pol
     RH/LHCP
     30 dB XPD
   Field of view options:
     ±2 degrees
        Mispointing compensation
     ± 10 degrees by ± 2 degrees
        Failover retargeting



                                           FoV: ±2 degrees   ±10 degrees


                               Sept 2010                        CONFIDENTIAL
ASIC Development Path
 Ku band Rx/Tx chipset – samples November 2010
 Ka band Rx/Tx chipset beginning design (early 2012
  availability)
 LSCX band Rx/Tx chipset designed (2011 availability)

    Rx          Tx




                          Sept 2010                 CONFIDENTIAL
Ku Band Beamformer Chipset
   Ad-A-Beam™ = Adaptive-Analog-Beamformer
   Digital control but analog process
   Digital beamforming preferred . . . EXCEPT for cost
   100 element array (if Digital)
     500Mhz=1Gbps processing
     1Gbps = $500 (?)
     100Gbps = $50,000
 100 element array (if Analog)
     100 x $5 = $500
 Broadband/Many-Element Sweet Spot
     Satcom
     Radar
     Broadband Wireless
 Volume driving design


                                Sept 2010                 CONFIDENTIAL
Ku Band Beamformer Chipset
 Rx chip:
     Eight RF inputs, independent 3 bit phase shifters and VGAs
     One RF beam output
 Tx chip:
     One RF input, eight RF beam outputs, PA for each element
   Low per-element cost makes phased arrays economical for commercial
    applications
   On-chip 2nd stage LNA reduces gain requirement for off-chip front end LNA
    or allows direct element feeding
   Broadband analog design
   Low power consumption for mobile applications
   Receive and transmit beamformer chipset for bidirectional arrays allows
    shared or separate Tx and Rx apertures
   Overvoltage protection on all RF pins
   Die size 4.8 mm x 2.4 mm



                                   Sept 2010                        CONFIDENTIAL
Ku Band Rx Chip Functional Diagram

    ADDRESS BIT 1                                        GAIN/PHASE CTRL BIT 1

    ADDRESS BIT 2                                        GAIN/PHASE CTRL BIT 2
                                 GAIN/PHASE CTRL
                                    DECODER
    ADDRESS BIT 3                                        GAIN/PHASE CTRL BIT 3

          CLOCK

                           VGA
                                             
                     LNA
           RF IN 1
                                                         RF OUT A

           RF IN 2                                      Vcc 1
                                                   4:1
           RF IN 3                                      Vcc 2

           RF IN 4                                      GND



    ADDRESS BIT 1                                        GAIN/PHASE CTRL BIT 1

    ADDRESS BIT 2                                        GAIN/PHASE CTRL BIT 2
                                 GAIN/PHASE CTRL
                                    DECODER
    ADDRESS BIT 3                                        GAIN/PHASE CTRL BIT 3

           CLOCK

                           VGA
                                             
                     LNA
           RF IN 5
                                                         RF OUT B

           RF IN 6                                      Vcc 1
                                                   4:1
           RF IN 7                                      Vcc 2

           RF IN 8                                      GND




                                   Sept 2010                                     CONFIDENTIAL
Ku Band Tx Chip Functional Diagram

    ADDRESS BIT 1                                GAIN/PHASE CTRL BIT 1

    ADDRESS BIT 2                                GAIN/PHASE CTRL BIT 2
                         GAIN/PHASE CTRL
                            DECODER
    ADDRESS BIT 3                                GAIN/PHASE CTRL BIT 3

          CLOCK


                         
                    PA           VGA
         RF OUT 1
                                                 RF IN A

         RF OUT 2                               Vcc 1
                                           1:4
         RF OUT 3                               Vcc 2

         RF OUT 4                               GND



    ADDRESS BIT 1                                GAIN/PHASE CTRL BIT 1

    ADDRESS BIT 2                                GAIN/PHASE CTRL BIT 2
                         GAIN/PHASE CTRL
                            DECODER
    ADDRESS BIT 3                                GAIN/PHASE CTRL BIT 3

           CLOCK


                         
                    PA           VGA
         RF OUT 5
                                                 RF IN B

         RF OUT 6                               Vcc 1
                                           1:4
         RF OUT 7                               Vcc 2

         RF OUT 8                               GND




                             Sept 2010                                   CONFIDENTIAL
Ku Band Beamformer Specifications (Rx)
RF Specifications                                            Digital Control Inputs
RF Input/Output Frequency            10 - 13 GHz             Address High                        3.3 V
RF Input/Output Impedance                50                 Address Low                          0V
Gain (One RF IN To RF OUT)                                   Gain/Phase Control High             3.3 V
                                        13 dB
At Maximum VGA Setting
                                                             Gain/Phase Control Low               0V
VGA Gain Range                       0 dB to 12 dB
Gain Settling Time                       1 μs                Control Line Bandwidth             10 MHz
Gain Stability Over Temperature    0.015 dB/°C
Gain Flatness Over Any 50 MHz
                                        0.2 dB
Bandwidth
Gain Stability Over Phase States
Phase Range
                                        ±1 dB
                                         360°
                                                             DC Specifications
Phase Settling Time                      1 μs                Supply Voltages                  1.8 V, 3.3 V
Phase Stability Over Temperature       0.1 °/ °C             Power Consumption                  600 mW
VGA Phase Stability                    0.1°/dB
Maximum Phase Length Difference
                                          2°
Over All Eight RF Signal Paths
Group Delay Flatness Over Any 50
                                        50 ps
MHz bandwidth
RF Input VSWR                            1.8:1
RF Output VSWR                           1.5:1
Noise Figure                             3 dB                Thermal Specifications:
Maximum RF signal crosstalk             20 dB
Intermodulation Distortion             -60 dBc
                                                             Continuously operable without heat sinking over
P1dB at LNA Output                      0 dBm                ambient temperature range -30 C to 50C.




                                                     Sept 2010                                     CONFIDENTIAL
Ku Band Tx/Rx Layouts




                           Flipchip in BGA package



               Sept 2010                CONFIDENTIAL
                            LSCX Receiver




4 bit gain control and 4 bit phase control
                                Sept 2010    CONFIDENTIAL
                                LSCX Receiver


DC Specifications
            Supply Voltages                       TBD
            DC Supply Power At                  100 mW
            Maximum RF Output
            Power
RF Specifications

           RF Input/Output Frequency             0.8 to 12 GHz
           RF Input/Output Impedance                  50 Ω
           Gain (RF IN to One RF OUT)                20 dB
           At Maximum VGA Setting
           VGA Gain Range                            20 dB
           Number of Gain States                16 (4 bit control)
           Gain Settling Time                         10 ns
           Gain Stability Over Temperature         0.01 dB/°C
           Gain Flatness Over Any 50 MHz             0.2 dB
           Bandwidth



                                   Sept 2010                         CONFIDENTIAL
                  LSCX Receiver


Gain Stability Over Phase States           ±1 dB
Phase Range                                 360°
Number of Phase States                16 (4 bit control)

Phase Settling Time                         10 ns
Phase Stability Over Temperature          0.02°/ °C
VGA Phase Stability                        0.1°/dB
Maximum Phase Length Difference              1°
Over All Eight RF Signal Paths
Group Delay Flatness Over Any 50            50 ps
MHz bandwidth
RF Input VSWR                               1.5:1
RF Output VSWR                              1.5:1
Noise Figure                               1.5 dB
Maximum RF signal crosstalk                20 dB
Intermodulation Distortion                -60 dBc
Output Power for 1 dB                      8 dBm
Compression (OP1dB)
Output Third Order Intercept (OIP3)       18 dBm

                        Sept 2010                          CONFIDENTIAL
Ka Band Chip Functional Diagram (Rx)

  CLOCK                 GAIN/PHASE CTRL         GAIN/PHASE CTRL SERIAL IN
                           DECODER

                  VGA
                                    
            LNA
  RF IN 1
                                                RF OUT A

  RF IN 2                                      Vcc 1
                                          4:1
  RF IN 3                                      Vcc 2

  RF IN 4                                      GND



  CLOCK                 GAIN/PHASE CTRL         GAIN/PHASE CTRL SERIAL IN
                           DECODER

                  VGA
                                    
            LNA
  RF IN 5
                                                RF OUT B

  RF IN 6                                      Vcc 1
                                          4:1
  RF IN 7                                      Vcc 2

  RF IN 8                                      GND




                              Sept 2010                      CONFIDENTIAL
Ka Band Preliminary Specifications (Rx)
RF Specifications                                              Thermal Specifications:
RF Input/Output Frequency               17 to 23 GHz           Continuously operable without heat sinking over
RF Input/Output Impedance                   50                ambient temperature range -30 C to 85C.
Gain (One RF IN to RF OUT)
                                            16 dB
At Maximum VGA Setting
VGA Gain Range                             20 dB
Number of Gain States                 16 (4 bit control)
Gain Settling Time                         10 ns
Gain Stability Over Temperature       0.015 dB/°C
Gain Flatness Over Any 100 MHz
                                           0.2 dB
Bandwidth
Gain Stability Over Phase States            ±1 dB
Phase Range                                 360°
Number of Phase States                16 (4 bit control)
Phase Settling Time                         10 ns
Phase Stability Over Temperature          0.04°/ °C
VGA Phase Stability                        0.1°/dB
Maximum Phase Length Difference
                                              1°
Over All Eight RF Signal Paths
Group Delay Flatness Over Any 100
                                            50 ps
MHz bandwidth
RF Input VSWR                              1.5:1
RF Output VSWR                             1.5:1
Noise Figure                                3 dB
Maximum RF Signal Crosstalk                20 dB
Intermodulation Distortion                -60 dBc
Output Power for 1 dB Compression
                                           8 dBm
(OP1dB)
Output Third Order Intercept (OIP3)       18 dBm




                                                           Sept 2010                                    CONFIDENTIAL
Phased Array Tile Modules
   Integrated module built
    around 1-4+ beamformer
    chips
   Tile size:
     4 x 2 (dual polarization)
     8 x 2 – two chips
     16 x 2 – four chips
   Interconnects:
     Beamformer control
        (digital)
     RF (equiphase)
     Power




                                 Sept 2010   CONFIDENTIAL
Linear Signal Development Teams
 Washington State University
   Analog, RF, and Mixed signal Application Group (ARMAG)
   Center for Design of Analog-Digital Integrated Circuits (CDADIC)
   Prof. Deuk Heo
   RFIC design and layout

 Brigham Young University
   Center for Smart Antenna Systems (CSAS)
   Prof. Karl Warnick
   Phased array antenna design and systems engineering


 Other Partners/Collaborators
   Antenna stabilization platform
   RF ASIC design consultants
   Maxtex, FlipChip Inc. (chip packaging)                   CSAS
   Phased array tile IP (patent pending)

                             Sept 2010                     CONFIDENTIAL
Linear Signal Development Teams




                Sept 2010         CONFIDENTIAL
CSAS Phased Array Research
 10 years of continuous National Science Foundation funding for signal
  processing and phased array antenna research for radio astronomy
 First demonstration of astronomical image formation using an L-band
  phased array on the Green Bank 20-Meter Telescope
 First demonstration of adaptive interference cancellation using a
  phased array feed
 Lowest system temperature and highest sensitivity ever measured for
  a microwave phased array
 Current projects:
     Focal L-band Array Feed for Green Bank Telescope (FLAG)
     Phased Array Feed feasibility study for Arecibo Radio Telescope
     Cryogenic phased array feeds
     Real time broadband multichannel digital signal processing
     Phased array antennas and phased array feeds for Satcom
     Phased arrays for magnetic resonance imaging (MRI)




                                             Sept 2010                    CONFIDENTIAL
Contact Info



     Linear Signal, LLC

     86 N University Ave, Suite #400
     Provo, Utah 84601

     Phone:    801-337-9100
     Fax:      815-301-3687

     http://www.linearsignal.com
     info@linearsignal.com



                    Sept 2010          CONFIDENTIAL

								
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