Comb Generator Emitter CGE04 – 100 MHz to18 GHz
The CGE04 is a broadband reference comb source producing signals within the 100 MHz to 18 GHz frequency range. The CGE04 updates and replaces the older CGE01 comb source.
The CGE04 is designed for the purpose of performing checks on fully- or semi-anechoic chambers, and other similar test environments. It is equipped with a precision SMA output connector to which an antenna (optional) can be fitted for generating radiating E-fields. The CGE04 is housed in a metal enclosure so that it can be mounted in direct electrical contact with a ground plane, as may be required by some tests.
The CGE04 is compact and can be run from a 9 – 18 VDC PSU01 power adapter. To minimise cable effects when characterising an electromagnetic environment, it can also be run independently using a PPU01 NiMH battery pack.
The comb signal allows both reference and noise floor signal levels to be viewed simultaneously, aiding dynamic range measurements.
Key features
- 100 MHz to 18 GHz output – Applications across a broad spectrum
- Stable output – Repeatable measurements
- Selectable comb output frequency – Flexibility across a range of applications
- Compact and portable – 56 x 17.5 x 72 mm
- PPU01 battery or external power supply – No power cable effects when using the PPU01 – Continuous operation using the external 18 VDC power adapter
Features/Applications
Features
- 100 MHz to 18 GHz output – Applications across a broad spectrum
- Stable output – Repeatable measurements
- Selectable comb output frequency – Flexibility across a range of applications
- Compact and portable – 56 x 17.5 x 72 mm
- PPU01 battery or external power supply – No power cable effects when using the PPU01 – Continuous operation using the external 18 VDC power adapter
Applications
- Conducted and radiated measurement systems validation and verification
- Investigation and characterisation of different measurement environments such as fully- or semi-anechoic chambers
- Reference source for:
- Daily pre-test checks as required by accreditation authorities e.g. ISO 17025, DEF_STAN 59-411
- Comparisons between test sites
- Long-term performance monitoring
- Investigation of screened room behaviour
- Cable loss measurements
- Evaluating component assembly characteristics e.g. filter loss, amplifier gain and bandwidth
- Spectrum analyser or receiver pre-checks
- Shielding evaluation
Specifications
Frequency Range
- Conducted 100 MHz to 18 GHz direct connection into 50 Ω system
- Radiated 1 GHz to 18 GHz radiated using MCN02 monocone antenna
Output Level
- Conducted 50 dBµV min. into 50 Ω system for ≥ 90% of combs up to 18 GHz
Comb signal step size
- Comb mode 1 – 100 MHz base frequency 100 MHz, 200 MHz, … 18 GHz
- Comb mode 2 – 106.25 MHz base frequency 106.25 MHz, 212.5 MHz, … 17.95625 GHz
Stability
- Amplitude
15°C to 30°C <+/-1 dB, 100 MHz to 18 GHz
5°C to 40°C <+/-1.5 dB, 100 MHz to 18 GHz
- Frequency 5°C to 40°C <+/- 30 ppm max, <+/- 10 ppm typ.
- Time <1 dB (typical over a 12-month period)
Operating time
- Battery powered 10 hours typical with fully charged PPU01
Other
Output connector
- 50 Ω precision SMA jack
Dimensions
- CGE04 56 mm x 17.5 mm x 65 mm (72 mm including connector)
- With PPU01 80 mm diameter x 65 mm (72 mm including connector)
Weight
- CGE04 0.1kg
- With PPU01 0.65kg
Power Supply
- 9 – 18 VDC , 0.5 A max
Indicators
- Blue – Active, Comb mode 1
- Green – Active, Comb mode 2
- Red – Low battery / supply error
Controls
- 3-way switch Comb mode 1 | OFF | Comb mode 2
Kits & Accessories
CGE04KIT01
Standard CGE04 reference source kit
- CGE04 comb generator emitter PPU01 Portable Power Unit
- PSU01 18 VDC mains power adapter
- Hard case
- Manufacturer’s test certificate
CGE04KIT02
Standard CGE04 reference source kit plus antenna
- CGE04 comb generator emitter
- PPU01 Portable Power Unit
- PSU01 18 VDC mains power adapter
- Hard case
- Manufacturer’s test certificate
- MCN02-SMA 1 GHz to 18 GHz detachable monocone antenna
- CAL13 – conducted power output measurement, 0 GHz to 18 GHz
Accessories
- MCN02-SMA – Detachable monocone antenna (1 GHz to 18 GHz optimum when used with CGE04)
- BP01 – 5 V 2 AHr detachable battery pack
Typical output measurement results
During the holiday period, our E&E UK offices and laboratories will only be open on selected days. If you have any questions, please contact the appropriate team who will be pleased to help.
