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Home RF power solutions RF generator modules RFGM series generator modules

RFGM series generator modules

Applications

  • RF treatment for aestetic medicine
  • Vacuum plasma applications

Features

  • High efficiency – up to 90 %, less heat dissipation
  • Input – up to 500 V DC
  • Frequencies – 6.78, 13.56, 27.12, 40.68, 81.36 MHz, factory fixed (0.5-4 MHz on request)
  • Peak power – 300-1500 W (model dependent)
  • Duty cycle – 0-100 %

Description

RFGM-series are medium power RF modules providing at its output high voltage of the radio-frequency range. They were designed as a part of RF power delivery system for aestetic medicine and for vacuum plasma applications.

Please note, such module is not a stand-alone solution and for proper operation it needs external sources of HV DC (for ex. PCA-series capacitor charger) and low voltage 24 V DC of appropriate powers.

Output power varies from 300W (for 81.36 MHz) to 1500W in dependence on model, output frequency is fixed (6.78, 13.56, 27.12, 40.68, 81.36 MHz or 0.5-4 MHz are available on request). Modules are cooled with a built-in fan.

Average output power of a module can be regulated in two different ways:
– either by varying an input DC voltage (output power of RFGM module is increased with the input voltage increase)
– or by multi-kilohertz PWM of the output (set by external controlling device with Power control signal or via RS-485). The average output power in this case is linear with duty cycle.

Since the modules for aestetic medicine were designed to be integrated into secondary circuits of medical RF systems, they do not need individual certificates of compliance to medical standards, although they fully corresponds to. So, they can be used in medical systems without any modifications, any additional filtration or additional means of protection. And they could be certified by user as a part of complete system.

Technical Specifications

Input:

HV input
DC voltage, regulated
500 V max (model dependent)
HV power consumption
2000 W max (model dependent)
LV input
24 V DC
LV current consumption
1 A max

Output:

Load impedance
50 Ohm
Frequency
6.78, 13.56, 27.12, 40.68, 81.36 MHz, (other on request)
fixed at the moment of order
Peack power (WMAX)
1500 W max (model dependent)
Duty cycle
0-100%
Average power
0 – WMAX
Efficiency
up to 90%
Output connector
N-TYPE RF connector by Amphenol (5/8-24 thread)

Interfaces:

Analogue
+ (a set of TTL signals)
Digital
+ (RS-485 by default, other on request)

Other:

Protections
– Overtemperature protection
– Short circuit tolerant
– Open circuit tolerant (short-time)
Safety features
Power monitors
Capacitive coupling of the output
Grounding
Output return is connected to the chassis
Cooling
Forced air cooling with built-in fan
Combining of multiple modules
+ (two modules can be connected in master-slave mode;
for combining of three and more modules an appropriate controller is needed; an appropriate power combiner is needed in all cases)

Environment:

Operating temperature
0 … +40 °C
Storage temperature
-20 … +60 °C
Humidity
0 … 90%, non-condensing

Mechanical:

Size (LxWxH)
216x132x106 mm
Weight
Approx. 2.5 kg

How to Order

Medium to High Frequencies models based on Silicon Carbide (SiC) technology MOSFET

Model
Description
Custom
0.5 – 4 MHz
Maximal output power up to 1500 W
Easily available as modification of 6.78 MHz model
All parameters are configurable
RFGM-6.78-800
6.78 MHz, output power 800 W
Combining of multiple modules – no (enabled on request)
Suggested input HVDC source PCA-10-300V-PD
RFGM-6.78-1500
6.78 MHz, output power 1500 W
Combining of multiple modules – yes (disabled on request)
Suggested input HVDC source PCA-20-500V-PD
RFGM-13.56-800
13.56 MHz, output power 800 W
Combining of multiple modules – no (enabled on request)
Suggested input HVDC source PCA-10-300V-PD
RFGM-13.56-1500
13.56 MHz, output power 1500 W
Combining of multiple modules – yes (disabled on request)
Suggested input HVDC source PCA-20-500V-PD

 

Very High Frequencies models based on Gallium nitride (GaN) technology:

Model
Description
RFGM-27.12-500
27.12 MHz, output power 500 W
Combining of multiple modules – no (enabled on request)
Suggested input HVDC source PCA-10-300V-PD
RFGM-27.12-1000
27.12 MHz, output power 1000 W
Combining of multiple modules – yes (disabled on request)
Suggested input HVDC source PCA-10-300V-PD or PCA-20-300V-PD
RFGM-40.68-500
40.68 MHz, output power 500 W
Combining of multiple modules – yes (disabled on request)
Suggested input HVDC source PCA-10-300V-PD
RFGM-81.36-300
81.36 MHz, output power 300 W
Combining of multiple modules – no (enabled on request)
Suggested input HVDC source PCA-10-300V-PD

Downloads

RFGM-manual-en
RFGM-manual-en.pdf (1 MB)