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Tunable Filter


1. Basal Description

 

The tunable filter is a late-model RF Band Pass Filter. It has "Reduce Transmitter Noise" " Improve Receiver Sensitivity" " Improve Cosite Performance" advantages etc..

2. Environmental Parameter

Environmental Parameter
Standard
Especial
Vibration(5-2000Hz)
10g
20g
Shock(11ms)
30g
50g
Relative Humidity
0~90%
95%
Operating Temperature
-40 ~ +60°C
-55 ~ +85 °C
Storage Temperature
-40 ~ +100°C
-40 ~ +125°C
Package
Surface Mount, SMA and customization available

3. Tunable Filter(Four Series)

  Low Power Voltage Tuning Filter Series  
    Tunable Frequency Range: 30 to 610MHz  
    Sub-band: 30~90MHz,30~120MHz, 108~174MHz, 225~400MHz, 225~512MHz, 215~610MHz,200~450MHz
Customization available
    Power Handling: +5dBm ~ +8dBm max
    Tuning Voltage: +0.5 ~ +28V DC
    Frequency Drift: +/-1MHz max(-40 ~ +60°C)
    1. Front End Preselection Voltage Tuning Filter
      3dB Bandwidth: 10%~40%
      Shape Factor(30dB BW/3dB BW): 6 max(two sections)
      Power Handling: +5dBm ~ +8dBm
      Insertion Loss in Pass Band: 3dB max
      Tuning Time: 10us max
      Input and Output Impedance: 50Ohms
      VSWR: 2.0 max
      Group Delay: 150ns max
      Group Delay Ripple: 30ns max
      Phase-Frequency Characteristic: Linear in 3dB bandwidth
      Phase Ripple: +/-5°
      Survival Input Power: 1W
    2. Postposition Preselection Voltage Tuning Filter
      3dB Bandwidth: 4%~10%
      Shape Factor(30dB BW/3dB BW): A Type: 4 max(four sections)
B Type: 3 max(six sections)
C Type: 2 max(eight sections)
      Power Handling: +5dBm ~ +8dBm
      Insertion Loss in Pass Band: A Type: 6dB max,B Type: 8dB max,C Type:10dB max
      Tuning Time: 10us max
      Input and Output Impedance: 50Ohms
      VSWR: 2.0 max
      Group Delay: 150ns max
      Group Delay Ripple: 30ns max
      Phase-Frequency Characteristic: Linear in 3dB bandwidth
      Phase Ripple: +/-5°
    3. Combined Voltage Tuning Filter
     
     
   
  1W Medium Power Digital Control Frequency Hopping Filter Series
    Power Handling: +30dBm
    Hopping Speed: 20us max
    Hopping Point: 250(Customization available)
    Frequency Range: 30 to 610MHz
    Sub-band: 30~90MHz,30~120MHz, 108~174MHz, 225~400MHz, 225~512MHz, 215~610MHz,200~450MHz
Customization available
    Input and Output Impedance: 50Ohms
    Frequency Drift: +/-0.5MHz max(-40 ~ +60°C)
    Power Supply: +5V, +28V,...(+100V)
    Digital Control Protocol: 8 bit Parallel(TTL Compatible)
    Tune Adress: The binary tuning word is determined by the following relationship:
   
   

For example: If you wish to tune to 300 MHz using a 225 to 400 MHz filter, the tune word is: (300-225)/(400-225)x250=107.14(01101011 binary)

NOTE:  Round off to the nearest decimal integer!
    1. Front End Preselection Frequency Hopping Filter
      3dB Bandwidth: 10%~40%
      Shape Factor(30dB BW/3dB BW): 6 max(two sections)
      Insertion Loss in Pass Band: 6dB max
      VSWR: 2.0 max
      Group Delay: 150ns max
      Group Delay Ripple: 30ns max
      Phase-Frequency Characteristic: Linear in 3dB bandwidth
      Phase Ripple: +/-5°
    2. Postposition Preselection Digital Control Frequency Hopping Filter
      3dB Bandwidth: 4%~10%
      Shape Factor(30dB BW/3dB BW): A Type: 6 max(four sections)
B Type: 4 max(six sections)
      Insertion Loss in Pass Band: A Type: 6dB max,B Type: 7dB max
      VSWR: 2.0 max
      Group Delay: 150ns max
      Group Delay Ripple: 30ns max
      Phase-Frequency Characteristic: Linear in 3dB bandwidth
      Phase Ripple: +/-5°
    3. Combined Digital Control Frequency Hopping Filter
     
     
   
  50W High Power Pass Band Switching Filter Bank Series
   
    Technical Specification:
    Frequency Range: 30 to 610MHz
    Sub-band: 30~90MHz,30~120MHz, 108~174MHz, 225~400MHz, 225~512MHz, 215~610MHz,200~450MHz
Customization available
      Each section can be divided severval sub-band according to 5~50% 1dB bandwidth
    Max Input power: 150W min
    Insertion Loss in Pass Band:
(Including the Insertion Loss of PIN Switch )
BW/f0≥5%: 2dB max BW/f0≥10%: 1.8dB max
    BW/f0≥20%: 1.5dB max BW/f0≥40%: 1.2dB max
    Attenuation: BW/f0≥5%: -65dB max BW/f0≥10%: -60dB max
      BW/f0≥20%: -50dB max BW/f0≥40%: -50dB max
    Input and Output Impedance: 50 Ohms  
    VSWR: 2.0 max  
    Power Supply: +5V, +10V, +100V  
    Frequency Switching Time: 20us max  
   
  Combined Digital High Power Frequency Hopping Filter
   
    Technical Specification:
    Frequency Range: 30 to 610MHz
    Sub-band: 30~90MHz,30~120MHz, 108~174MHz, 225~400MHz, 225~512MHz, 215~610MHz,200~450MHz
Customization available
    Max Input power: 150W min
    Input and Output Impedance: 50 Ohms
    VSWR: 2.0 max
    Power Supply: +5V, +28V,+100V
    Hopping Speed: 25us max
    Digital Control Protocol: 8 bit Parallel(TTL Compatible)
    Tuning Adress: Same AS 1W Mediun Power Digital Control Frequency Hopping Filter
    Tunable filter size can be customized
 
 
Copyright © 2008 Chengdu AINFO Inc. All rights reserved.
Last updated 2008-05-27