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AS9100 Rev C, ISO 9001:2008,
ISO 14001:2004 and OHSAS 18001:2007

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E-Plane Hybrid Couplers - CEH

Features:

  • Low insertion loss
  • 90° relative phase
  • Compact, in-line port arrangement
  • Covers up to a full waveguide band

Applications:

  • Power distribution network
  • Diplexer, phase detectors
  • General purpose power dividers
  • Subsystems

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Download the CEH specsheet (.pdf)

Description

Millitech series E-plane hybrid slot couplers are ideal for applications where in-line power division or combining is required. The two outputs have a nominal 90° phase difference with low amplitude deviation port to port.

These couplers are useful as power dividers for up to 90% of the waveguide band. Three couplers can be connected together to make a four-way power divider. All units can bolt to blind flanges through access holes at the top and bottom of each flange.

Millitech also offers series CSS short slot couplers, CL3 and CL4 high directivity directional couplers, series CMT hybrid couplers, series CGC crossguide couplers, and compact 4- and 8-way custom power dividers/combiners. Higher order units are available upon request.

Electrical Specifications

Table 1 - Typical Performance

Model
Number
Center
Frequency
(GHz)
Bandwidth
(%)*3
Output Port Balance Nominal
Insertion
Loss*4
(dB)
Phase
Deviation
(º) (max)*1
Magnitude
Deviation
(dB) (typ)*1,5
Output-
output
Isolation
(dB) (typ)*2
CEH-28-030Y0 30 7% +/- 5 0.5 19 -3.1
CEH-28-033Y0 33 41% +/- 5 1.5 19 -3.1
CEH-22-035Y0 35 9% +/- 5 0.5 19 -3.2
CEH-22-042Y0 42 41% +/- 5 1.5 19 -3.2
CEH-19-045Y0 45 8% +/- 5 0.5 19 -3.2
CEH-19-050Y0 50 40% +/- 5 1.7 19 -3.2
CEH-15-062Y0 62 19% +/- 5 0.9 19 -3.3
CEH-15-063Y0 63 40% +/- 5 1.7 19 -3.3
CEH-12-075Y0 75 40% +/- 5 1.7 19 -3.3
CEH-12-079Y0 79 19% +/- 5 0.9 19 -3.3
CEH-10-093Y0 93 38% +/- 5 1.8 19 -3.4
CEH-10-094Y0 94 8% +/- 5 0.5 19 -3.4

*1 – See plots.
*2 – All specifications are tested with the isolated port terminated into a series WTR termination, offered separately.
*3 – Frequencies are for standard units; other frequencies may be available upon request.
*4 – Ideal 3 dB splitter loss plus typical additional insertion loss from the Input Port to Output 1 or Output 2
*5 – Typical magnitude imbalance between Output 1 and Output 2 at the center frequency. Nominally, this is the maximum magnitude deviation over the full band.

CEH - Port Arrangement

Figure 1 - Port Arrangement

Measured Data

Measured Amplitude Balance, CEH-10-093B0

Figure 2 - Typical Amplitude Balance, CEH-10-093B0

Typical Amplitude Balance, CEH-10-093B0

Figure 3 - Typical Phase Balance, CEH-10-093B0

NOTE: Amplitude and phase balance responses over frequency for all other CEH models are expected to be the same as those shown for the CEH-10-093B0, scaled to the BW, typical phase and amplitude imbalances, and nominal insertion losses described for those models in Table 1. Contact Millitech for further information and simulation results.

Outline Drawings

Figure 4 - Outline Drawings

Mechanical Specifications

Table 2 - Typical Mechanical Outline

Model Number CEH-28 CEH-22 CEH-19 CEH-15 CEH-12 CEH-10
A (in/mm) 1.75/44.5 1.75/44.5 1.75/44.5 1.5/38.1 1.5/38.1 1.5/38.1
B (in/mm) 1.8/45.7 2.455/62.4 2.455/62.4 1.8/45.7 1.8/45.7 1.8/45.7
C (in/mm) 0.75/19.1 1.126/28.6 1.126/28.6 0.75/19.1 0.75/19.1 0.75/19.1
D (in/mm) 1.01/25.7 1.33/33.8 1.33/33.8 1.01/25.7 1.01/25.7 1.01/25.7
E (in/mm) 0.505/12.8 0.665/16.9 0.505/12.8 0.505/12.8 0.505/12.8 0.665/16.9
Flange MIL.F-3922 /54-003* /67B-006 /67B-007 /67B-008 /67B-009 /67B-010

*With #4-40 threaded holes.

Table 2 - Typical Mechanical Outline

CEH - Figure 5 - Alternate Configuration for CEH-10

Figure 5 - Alternate Configuration for CEH-10

This more compact configuration has an internal termination for the Isolated Port.

How to Order

Specify Model Number
CEH-XX-AAAY0
XX =Waveguide Band
  • WR – number
AAA= Center frequency in GHz (See Table 1 for examples)
Y= Material
  • A – Aluminum with gold plating (standard)
  • B – Brass with gold plating
0= Other Options
  • 0 – Standard (using model numbers from Table 1)
  • N – Nonstandard bandwidth (please specify BW requirements in %)

Example:

To Order: A standard gold-plated aluminum WR-10 hybrid coupler with a center frequency of 94 GHz and 8% bandwidth (covering 90.25 to 97.75 GHz)

Specify: CEH-10-094A0