H91 SERIES

  

                                                              

  Contact Us           Application Notes for RF Switch

SPECIAL ORDER PRODUCT
- CONSULT FACTORY BEFORE ORDERING -

 

 

The H91 Series consist of a family of high-speed and high-isolation hermetically sealed switches with integrated drivers that operate over the frequency range from 1 to 18 GHz.

The H91 Series switches are equipped with removeable SMA female RF connectors permitting field replaceability or integration as drop-in modules. Package area and volume are minimized and overall thickness, with the built-in driver, is only 0.24”.

The H91 family consists of SPDT and SP4T switches in both reflective and non-reflective configurations.

On all switches, the dc and control ports are located in line on one wall of the module above the RF connection level. This makes the switches ideally suitable for printed-circuit type mounting.

REFLECTIVE MULTI-THROW SWITCHES

All models in this group use an integrated assembly of PIN diodes mounted in a microstrip transmission line in a series-shunt arrangement as shown in Fig.1.

When positive current is applied by the driver, the associated port is Off since the corresponding shunt diodes are biased to a low resistance and the series diode to a high resistance. With negative current, the converse conditions are established and the port is ON

 

 Reflective multi-throw switch schematic diagram

NON REFLECTIVE MULTI-THROW SWITCHES 

The circuit arrangements for this series is shown in Figure 2.

When positive current is applied the port is turned OFF. All the series diodes in that port are reverse-biased and the impedance at the output of the port is then effectively that of the 50-ohm resistor.

 Non-reflective multi-throw schematic diagram

SWITCHING SPEED

All models exhibit transition times of less than 10 nanoseconds between 10% to 90% and 90% to 10% of the RF power.

ON time, the time from 50% point of the TTL command to the 90% level of the detected RF, is less than 25 nanoseconds for all models; OFF time, from the 50% point of the TTL command to the 10% level of the detected RF, is less than 20 nanoseconds.

HERMETIC SEALING

All switches are housed in enclosures using sealed glass-to-metal “feedthru” connectors for true hermeticity.  

 

 

Models H9120H and H9120HT Hermetically Sealed SPDT Switches

 



 

  FREQUENCY (GHz)
MODEL NO. CHARACTERISTIC 1—4 4—8 8—12.4 12.4—18
H9120H
Min. Isolation (dB)
Max Insertion Loss (dB).
Max VSWR (ON)
60
1.1
1.75
60
1.4
1.75
60
2.0
1.75
50
2.5
2.0
H9120HT
Min. Isolation (dB)
Max Insertion Loss (dB)
Max VSWR ON
Max VSWR Port OFF
60
1.3
1.75
1.75
60
1.7
1.9
2.0
60
2.5
2.0
2.2
50
3.0
2.0
2.3

 

 DIMENSIONS AND WEIGHTS

 Dimensions and Weights, Model H9120H, HT

 

 

 

 

Models H9140H and H9140HT Hermetically Sealed SP4T Switches

 

 

Model H9140HT Hermetically Sealed SP4T Switch

  FREQUENCY (GHz)
MODEL NO. CHARACTERISTIC 1—4 4—8 8—12.4 12.4—18
H9140H
Min Isolation (dB)
Max Insertion Loss (dB)
Max VSWR (ON)
60
1.4
1.75
60
1.5
1.75
60
2.0
1.75
50
2.8
2.0
H9140HT
Min Isolation (dB)
Max Insertion Loss (dB)
Max VSWR On
Max VSWR Port Off
60
1.6
1.75
1.75
60
1.8
1.9
2.0
60
2.5
2.0
2.2
50
3.3
2.0
2.3

 

 

DIMENSIONS AND WEIGHTS

 Dimensions and Weights, Model H9140H, HT

 

 

PERFORMANCE CHARACTERISTICS

 

Power Handling Capability
Without Performance Degradation
   All Reflective Switches ...............1W cw or peak
   All Non Reflective Switches
      Input to any "OFF" port: 100 mW cw or peak
      Input to any "ON" port: 1W cw or peak
      Input to common port: 1W cw or peak
Survival Power
   Reflective Switches.....2W average, 75W peak
           (1 μsec max. pulse width)
   None Reflective Switches
      Input to any "OFF" port: 1W average,
         10W peak (1 μsec max. pulse width)
      Input to any "ON" port: 1W average,
         75W peak (1 μsec max. pulse width)
      Input to common port: 1W average,
         75W peak (1 μsec max. pulse width)
 
Switching Speed (All Models)  
 
   Rise time.................................................... 10 nsec max.
   Fall time....................................................... 10 nsec max.
   ON time........................................................ 25 nsec max.
   OFF time...................................................... 20 nsec max.
 
Power Supply Requirements
 For one Port on
MODEL  +5V ±5% -12 to -15V
 H9120H  60 mA  50 mA
 H9120HT  80 mA  50 mA
 H9140H  95 mA  60 mA
 H9140HT  135 mA  60 mA
     
Control Characteristics
Control Input
 
Impedance.......................


 
TTL, advanced Schottky, one unit load. (A unit load is 0.6 mA sink current and 20 μA source current.)
Control Logic....................

 Logic "0" (-0.3 to +0.8V) for port ON

logic "1" (+2.0 to +5.0V) for port OFF.

 
     
     
ENVIRONMENTAL RATINGS
Temperature Range
 Operating....................... -54°C to +110°C
 
AVAILABLE OPTIONS
Option No.
Description
7
SMA male RF connectors
9 Inverse control logic: "0" for port OFF and logic "1" for port ON.
41*
Internal video filter, common port only
42*
Internal video filter, output ports only
43*
Internal video filter, all ports
55*
Frequency range 0.5 to 18 GHz.
64A SMB male bias/control connectors
 G09  Guaranteed to meet Environmental
G12 RoHS Compliant
*See Application Notes for impact of this Option on specifications.