Personal tools
You are here: Home Products Broadcast Antennas Selective-Band Splashplate Antennas (Docking Feeds)

Selective-Band Splashplate Antennas (Docking Feeds)

Filed under:
Q-par Angus has a wide range of antenna feeds suitable for just about any size of reflector. These selective band feeds have the advantage of excellent performance at a low cost. The feeds have been deployed widely for use with Outside Broadcast antennas. The antenna feeds can be Linear, Dual Linear or Circularly Polarised. The connector(s) location at the rear of the reflector is a distinct advantage of these style of feeds over prime focus horn feeds with the associated mounting legs and brackets. The most popular reflector sizes for these antennas are 0.6 m, 0.9 m and 1.2 m, although many reflector sizes are available. Fully enclosing radomes available.
Commercial splashplate antenna

 


The frequency bands described below are some of our most popular however any frequency band is possible, within the range 1.5 to 22 GHz, with roughly a 0.4 GHz bandwidth for 2:1 VSWR.  With a reduced VSWR specification a much wider bandwidth is achievable.
Please ENQUIRE for further information.

 Mini feed in small reflector

Linear Docking Feeds,  covering 2 - 22 GHz frequency range

Circularly Polarised Docking Feeds,  covering 1.9 - 13.2 GHz frequency range

Dual (Linear) Polarized Docking Feeds,  covering 2 - 21 GHz & 35 GHz frequency range

 

Reflectors can be ordered using QSR#-*  where # is the reflector diameter in mm and * is the focal length of the reflector.  Please state 'suitable for docking feed'.

0.6 m reflector 203 mm focal length = QSR600-203

0.9 m reflector 337 mm focal length = QSR900-337

1.2 m reflector 457 mm focal length = QSR1200-457

 

Linear Docking Feeds

VSWR typically < 2 : 1 over 0.4 GHz bandwidth.

Replace the # with S for SMA connector, N for N Type, K for K-type (2.92 mm)

Circular polarised version shown in picture
Circular polarised version shown in picture

Circular polarised version shown in picture

Dipole Style (with radome)

Frequency Range  (GHz)      
Part Number
2.0 - 2.5
QDF2-2.5#
2.3 - 2.7
QDF2.3-2.7#
2.5 - 2.8
QDF2.5-2.8#
3.3 - 3.6
QDF3.3-3.6#
3.5 - 4.0
QDF3.5-4#
5.4 - 5.8
QDF5.4-5.8#
5.9 - 6.4
QDF5.9-6.4#
5.7 - 7.2
QDF5.7-7.2#
6.5 - 6.9
QDF6.5-6.9#

 Mini feed splashplate

Splashplate Style

Frequency Range  (GHz)      
Part Number
6.8 - 7.2
QDF6.8-7.2#
7.0 - 7.5
QDF7-7.5#
7.4 - 7.9
QDF7.4-7.9#
7.8 - 8.2
QDF7.8-8.2#
8.0 - 8.5
QDF8-8.5#
8.4 - 8.7
QDF8.4-8.7#
8.7 - 9.9
QDF8.7-9.9#
10.8 - 11.6
QDF10.8-11.6#
11.7 - 12.2
QDF11.7-12.2#
12 - 12.4
QDF12-12.4#
12.2 - 12.6
QDF12.2-12.6#
12.7 - 13.3
QDF12.7-13.3#
14.7 - 15.2
QDF14.7-15.2#
17.5 - 19.5
QDF17.5-19.5#
21 - 22
QDF21-22#

 splashplate 18_19

 

Fixed splashplate style 17.5 - 19.5 GHz  0.25 m reflector antenna pictured right with integral radome - QDF17.5-19.5S Feed with QSR250-100 Reflector.

Click <HERE> for more information

 

 

 

 

Circularly Polarised Docking Feeds

VSWR typically < 2 : 1 over 0.4 GHz bandwidth.  The circular waveguide ensures excellent out of band rejection of unwanted signals.

Replace the * with LH for left-hand polarisation and RH for right-hand polarisation

Replace the # with S for SMA connector, N for N Type, K for K-type (2.92 mm)

 Two backfire helix antennas

Backfire helix style (with radome)

Frequency Range  (GHz)      
Part Number
1.9 - 2.3
QDF1.9-2.3#*
2.0 - 2.4
QDF2-2.4#*
2.4 - 2.7
QDF2.4-2.7#*
3.3 - 3.7
QDF3.3-3.7#*
4.4 - 4.7
QDF4.4-4.7#*
4.7 - 5.0
QDF4.7-5#*
5.4 - 5.8
QDF5.4-5.8#*
5.8 - 6.0
QDF5.8-6#*
6.5 - 7.0
QDF6.5-7#*

 Two splashplate mini feeds

Splashplate Style

Frequency Range  (GHz)      
Part Number
6.8 - 7.2
QDF6.8-7.2#*
7.0 - 7.5
QDF7-7.5#*
8.0 - 8.6
QDF8-8.6#*
10.0 - 10.5
QDF10-10.5#*
10.2 - 10.7
QDF10.2-10.7#*
12.2 - 12.5
QDF12.2-12.5#*

 

 

 

Dual Polarised Linear Docking Feeds

VSWR typically < 2 : 1 over 0.4 GHz bandwidth.  Isolation between connectors typically >30dB

Replace the # with S for SMA connector, N for N Type, K for K-type (2.92 mm)

  Commercial antenna  generic1.jpgCircular polarised version shown in picture

Dipole Style (with radome)

Frequency Range  (GHz)      
Part Number
2.0 - 2.5
QDFDP2-2.5#
2.4 - 2.8
QDFDP2.4-2.8#
3.5 - 3.7
QDFDP3.5-3.7#

 

 DockingFeed 6.jpg

Splashplate Style

Frequency Range  (GHz)      
Part Number
7.0 - 7.7
QDFDP7-7.7#
8.0 - 8.5
QDFDP8-8.5#
10.2 - 10.5
QDFDP10.2-10.5#
10.2 - 10.6
QDFDP10.2-10.6#
12.2 - 12.5
QDFDP12.2-12.5#
20 - 21
QDFDP20-21S
splashplate DP20.5

 

 

 

Fixed splashplate style 20 - 21 GHz Dual polarised  0.25 m reflector antenna pictured right with integral radome - QDFDP20-21S Feed with QSR250-100 Reflector

click <HERE> for more information

 

 

 

 

Document Actions