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Comb Generator Emitter 02

CGE02C top

Image shown is the top view of the CGE02C




  • Stable output
  • Conducted and radiated options
  • 250 MHz to 26 GHz output
  • Compact and Portable
  • Battery powered


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Test Instrumentation Range Brochure


The Comb Generator Emitter 02 (CGE02) is a compact, battery-powered, reference signal source that generates a broadband radiated and/or conducted output up to 26 GHz. When used as a verification reference source, the known output allows unknowns within systems or components to be measured or calculated.

The compact size allows small enclosures to be evaluated when used as a reference source for shielding effectiveness measurements.

The CGE02 can be supplied with a 50 Ω SMA output connector (CGE02C) for direct connection to conducted test systems, or to an external antenna in order to generate test fields for evaluating radiated emission test systems. Alternatively, to achieve the best repeatability and compactness for purely radiated applications, the CGE02 can be supplied with an integrated antenna (CGE02R).

The CGE02 harmonic steps can be switched between 250 MHz and 256 MHz as standard, allowing more frequency points to be measured than is possible with a fixed-frequency source.


Stable output•  Repeatable measurements
Conducted and radiated options•  Evaluation of both conducted and radiated systems
250 MHz to 26 GHz output•  Applications across a broad frequency spectrum
 •  Applicable to harmonics of high frequency systems
Compact and Portable•  Comparisons between sites and environments
 •  Shielding effectiveness measurements even of small enclosures
Battery powered•  No power or interconnecting cables affecting measurements


  • Shielding effectiveness of small enclosures e.g. PCs, servers, wireless communications equipment
  • Radiated measurement systems validation and verification
  • Reference source for:
    • Daily pre-test verification checks if required by the accreditation authorities
    • Long-term performance monitoring
    • Spectrum analyser / receiver pre-checks
  • Investigation of reverberation (mode stirred) chamber behaviour
  • Characterisation of filter performance
  • Cable loss measurements
  • Inter-laboratory test programs
  • Proficiency test programs


Frequency Range•  250 MHz to 26 GHz direct connection into a 50 Ω system
 •  1 GHz to 26 GHz radiated using the integral antenna (CGE02R)
     or additional monocine antenna (CGE02C)
Step Size•  250 MHz or 256 MHz switchable
Output connector•  50 Ω SMA socket (CGE02C only)
Temperature stability•  <1 dB, at an ambient temperature of 15 °C to 35 °C
Time stability•  Typically <1 dB over a 12 month period
Dimensions•  CGE02C with battery pack - 76 mm diameter × 64 mm (74 mm inc. connector)
 •  CGE02C without battery pack - 76 mm diameter × 18 mm (28 mm inc. connector)
 •  CGE02R with battery pack - 76 mm diameter × 92 mm
 •  CGE02R without battery pack - 76 mm diameter × 46 mm
Weight•  Approx 550 g (including battery)
Power supply•  5 V 2 AHr battery pack. External input 5.00 V ± 0.25 V, 300 mA
Operating Time•  6.5 hours typical with a fully charged battery pack
Indicators•  Mode 1; 256 MHz steps. Mode 2; 250 MHz steps, incorrect power supply voltage


Standard Kits: 250MHz & 256MHz switchable comb step size

Part Number


Parts included

CGE02KIT01Standard CGE02C comb generatorCGE02C comb generator emitter with
 emitter (conducted output) kit SMA output connector
  CAL14 - conducted output power
   measurement, 0 GHz to 26 GHz
CGE02KIT02Standard CGE02R comb generatorCGE02R comb generator emitter
 emitter (radiated output) kit with integral antenna
  CAL10 - radiated electric field strength
   strength measurement, at 3 m in a FAR, 1 GHz to 26 GHz
CGE02KIT03Enhanced CGE02C comb generatorCGE02C  comb generator emitter with
 emitter (conducted and radiated output) kit SMA output connector
  MCN02 detachable monocone antenna
  CAL14 - conducted output power
   measurement, 0 GHz to 26 GHz

All kits are supplied with:

BP01 5 V 2 AHr rechargeable battery pack, BCH04 universal input battery charger, hard case, manual.


MCN02• Detachable monocone antenna (1 GHz to 26 GHz optimum used with CGE02C)
BP01• 5 V 2 A Hr detachable battery pack


Manufacturer's Calibrations

CAL14Conducted output power, 0 GHz to 26 GHz
 measured using a spectrum analyser (CGE02C only)
CAL10   Radiated field strength, 1 GHz to 26 GHz
 measured at 3 m in a FAR using a spectrum analyser
 (CGE02R or CGE02C with monocone antenna only)

Typical Output Measurement Results

Comb Generator Emitter 250 MHz spacing conducted graph - York EMC Services
CGE02 Graph 2 256 MHz Conducted

Comb Generator Emitter 250 MHz Radiated Output Graph - York EMC Services

Comb Generator Emitter 256 MHz comb spacing radiated Output Graph - York EMC Services


Comb Generator Emitter CGE02 Radiation Pattern Graph - York EMC Services


A wholly owned subsidiary of the University of York, we have been successfully delivering EMC training courses, designing and selling test instrumentation for over 20 years.

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York EMC Services Ltd
Market Square
University of York
YO10 5DD

Tel: +44 (0) 1904 324440
Fax: +44 (0) 1904 324434