ORBIT FR Radial Power Combiners User Manual

Radial Power Combiners

+

• Hot replacement capability

• Low insertion loss

• High reliability

SOLUTION FOR

• EMI/EMC testing

• EW* transmitters

• Communications

• Radar

• HDTV transmitters

• Phased array antennas

• Air trafc control

• Wireless systems

*Electronic warfare

Model number 752

Features

• Compact geometry

• Hot replacement capability

• Extremely low insertion loss

• Excellent failure tolerance

• Graceful decline in power output if amplifier

modules fail

•

High reliability- high mean time between failures

• Very high power handling capability

• Large number of inputs

• Well suited for harsh environments

The demanding requirements of state-of-the-art RADAR, EW and communications systems call for high
power, reliable ampliers. Based on low loss radial waveguide technology, ORBIT/FR’s series 700 combiners
and dividers are precisely machined assemblies qualied to meet the most specic of requirements.
Featuring hot replacement capability and compact geometry, these combiners/dividers are a cost-effective
solution to your high power transmission needs.

ORBIT/FR radial combiners are N-way dielectric non­resonant radial transmission line structures. The inputs are
equally spaced along the circumference of a parallel plate
radial transmission line; output power is extracted at the
center. The inputs are coaxial or rectangular waveguides.
The central output structure is generally coaxial, although
rectangular or higher mode circular waveguides can be
used. Neither isolation resistors nor mode suppressers are
used in the combiners; failure tolerance and hot replace­ment capability can be achieved without these devices. For
certain applications, generally those at lower frequencies
and lower combining orders, ORBIT/FR has built N-way
matched coaxial Tees. An N-way Tee can be considered

Model number 707

a degenerate case of a radial combiner in which the radial
transmission line is so small in radius that it has become
electrically insignificant.

By virtue of the N-way single step combining geometry,
small size (compared to a corporate combiner), and the
avoidance of resistive and absorptive devices, exceptionally
low combining losses are realized with radial combiners.
Typical combining losses vary from under 0.1 dB for VHF
and low UHF units to 0.3 dB at S-band and 0.5 dB at
K-band. Indeed, losses at VHF and UHF are so low that
they are usually difficult to measure.

The power combiners also feature a “hot replacement”
capability since the device is tolerant of open and short
failures at adjoining ports, meaning that an amplifier can
be replaced while the unit is operational.

Power levels are primarily dictated by the choice of connec­tors; CW levels in excess of tens of kilowatts are possible
with these devices.

Model number 730

Model number 753

2

Specifications

Radial power combiner model summary table

MODEL Frequency Inputs Peak Average Typ. Insertion VSWR Amplitude Phase Application
Range Power Power Loss (dB) (Max.) Imbalance Imbalance
(dB) (deg)

701 20-100 MHz 12 70 KW 20 KW 0.2 dB 1.5:1 ± 0.1 dB ± 1 deg EMC Test Facility

710 100-500 MHz 4 35 KW 0,15 1.25:1 ± 0.1 dB ± 1 deg EW/EMC transmitter

723 225-400 MHz 64 15 KW 0,2 1.3:1 ± 0.15 dB ± 1 deg Communications Transmitter

703 400-450 MHz 25 100 KW 25 KW 0,1 1.2:1 ± 0.1 dB ± 1 deg Scientific Applications

734 400-485 MHz 10 25 KW 3.75 KW 0,15 1.2:1 ± 0.15 dB ± 1 deg Wind shear Radar

706 400-625 MHz 24 50 KW 3.2 KW 0,3 1.25:1 ± 0.15 dB ± 1.5 deg Devider for Phased Array

702 420-430 MHz 20 50 KW 0,15 1.3:1 ± 0.1 dB ± 1 deg Scientific Applications

753 500-600 MHz 16 5 KW 0,15 1.25:1 ± 0.15 dB ± 1 deg -

704 1.2-1.4 GHz 32 50 KW 2 KW 0,15 1.3:1 ± 0.15 dB ± 1.5 deg Air Traffic Control Radar

748 1.25-1.35 GHz 40 65 KW 2 KW 0,3 1.5:1 ± 0.2 dB ± 2 deg Air Traffic Control Radar

741 1.93-1.99 GHz 32 10 KW 500W 0,25 1.25:1 ± 0.25 dB ± 2.5 deg PCS Transmitter

744 13.75-14.5 GHz 12 100 W 0,4 1.4:1 ± 0.3 dB ± 4 deg Satellite Terminal

709 16.3-16.6 GHz 16 40 KW 0,3 1.3:1 ± 0.25 dB ± 4 deg Divider for Phased Array

738 2.5-2.7 GHz 8 2 KW 200 W 0,25 1.3:1 ± 0.25 dB ± 2.5 deg Transmitter

742 2.5-2.7 GHz 12 1 KW 0,2 1.3:1 ± 0.25 dB ± 2.5 deg Transmitter

746 2.5-2.7 GHz 2 2 KW 200 W 0,25 1.3:1 ± 0.25 dB ± 2.5 deg -

707 2.7-2.9 GHz 54 50 KW 3.5 KW 0,3 1.5:1 ± 0.2 dB ± 2 deg Air Traffic Control Radar

708 2.7-2.9 GHz 32 50 KW 3.5 KW 0,3 1.5:1 ± 0.2 dB ± 2 deg Air Traffic Control Radar

711 2.7-2.9 GHz 50 30 KW 3 KW 0,3 1.25:1 ± 0.2 dB ± 3 deg Air Traffic Control Radar

730 2.7-2.9 GHz 90 100 KW 5 KW 0,3 1.5:1 ± 0.25 dB ± 2.5 deg Air Traffic Control Radar

735 2.7-2.9 GHz 16 1 KW 0,2 1.3:1 ± 0.25 dB ± 2.5 deg -

737 2.7-2.9 GHz 18 20 KW 2 KW 0,3 1.5:1 ± 0.2 dB ± 2 deg Radar

705 2.7-3.1 GHz 60 70 KW 7 KW 0,3 1.5:1 ± 0.3 dB ± 4 deg Air Traffic Control Radar

736 2.95-3.45 GHz 8 2 KW 500 W 0,3 1.5:1 ± 0.2 dB ± 2 deg Radar

751 3.0-3.4 GHz 34 3 KW 900 W 0,3 1.5:1 ± 0.2 dB ± 2 deg -

752 3.1-3.4 GHz 12 134 KW 6.7 KW 0,3 1.5:1 ± 0.25 dB ± 2.5 deg -

715 43.5-45.5 GHz 16 25 W 0,5 1.5:1 ± 0.5 dB ± 5 deg Star Terminal

743 5.85-6.425 GHz 16 1 KW 0,3 1.4:1 ± 0.3 dB ± 3 deg Satellite Terminal

733 9-11 GHz 16 100 W 0,3 1.3:1 ± 0.3 dB ± 5 deg Communications Transmitter

ORBIT/FR Customer Satisfaction Focus

ORBIT/FR is a registered ISO 9001: 2008 company
dedicated to customer satisfaction. We maintain
close contact with our customers through the entire
product life cycle, from initial purchase through
project management and post-sales support.

3

Have a question? Need more information?

Locate your local ORBIT/FR sales rep at:

http://www.orbitfr.com/usa/content/locate-sales-representative
Or email us at: [e-mail]

Product specifications and descriptions in this document are subject to change without notice.

Radial Power Combiners Datasheet

Actual products may differ in appearance from images shown.

© MVG 2013

www.microwavevision.com