Products

RFGM series generator modules

RFGM series generator modules
RFGM series generator modules
RFGM module, compact RF power generator 13.56 6.78 MHz

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)
  • Active output power stabilisation regime
  • Duty cycle – 0-100 %

RFGM-series are medium-power RF generator modules that provide high voltage output in the radio-frequency range. They are designed as part of an RF power delivery system for aestetic medicine and vacuum plasma applications.

Please note, these modules are not stand-alone solutions; for proper operation, they require external sources of high-voltage DC (HV DC) (for ex. PCA-series capacitor charger) and low voltage 24 V DC of appropriate power levels.

Output power varies from 300W (for 81.36 MHz) to 1500W depending on the model, and the 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.

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

There is a power generation mode possibility when the output power is very stable during the time, monitored and adjusted by integrated PID controller.

RFGM modules have advanced measuring circuits. Forward power, reflected power, load impedance are continuously and precisely monitored.

Since the modules for aesthetic medicine are 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 comply with them. Therefore, they can be used in medical systems without any modifications, additional filtration, or additional means of protection. They can be certified by the user as part of a complete system.

We have also less powerful RFGM board for aesthetic applications, 1MHz, 50W with fixed output frequency RFGM-1.00-50 board page.

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)
– protection from too high reflected power
Output measurements
– forward power
– reflected power
– load impedance
Safety features
forward power monitor, load impedance measurement
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

RFGM-XXX-YYY-ZZ, where:

  • XXX means the working frequency of the module;
    the most standard frequencies are 6.78MHz, 13.56MHz, 27.12MHz, 40.68MHz and 81.36MHz, other frequencies are available on request
  • YYY means the maximum output power of the module;
    typically the maximum power is in range from 300W to 1500W, other output power values can be considered on request
  • ZZ means the type of the module;
    none or 0 – stand-alone module (not suitable for master-slave operations)
    M – master (master unit for master-slave operations)
    S – slave (slave unit for master-slave operations)

Master-slave connection of two modules allows to increase the maximum output power twice and achieve 1000W to 3000W power levels.

 

Examples (the most popular modifications):

Model
Description
Custom
0.5 – 4 MHz
Maximum 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
Suggested input HVDC source PCA-10-300V-PD
RFGM-6.78-1500
6.78 MHz, output power 1500 W
Suggested input HVDC source PCA-20-500V-PD
RFGM-13.56-800
13.56 MHz, output power 800 W
Suggested input HVDC source PCA-10-300V-PD
RFGM-13.56-1500
13.56 MHz, output power 1500 W
Suggested input HVDC source PCA-20-500V-PD
RFGM-27.12-500
27.12 MHz, output power 500 W
Suggested input HVDC source PCA-10-300V-PD
RFGM-27.12-1000
27.12 MHz, output power 1000 W
Suggested input HVDC source PCA-10-300V-PD for 800W operations and below, or PCA-20-500V-PD for 1000W operations
RFGM-40.68-500
40.68 MHz, output power 500 W
Suggested input HVDC source PCA-10-300V-PD
RFGM-81.36-300
81.36 MHz, output power 300 W
Suggested input HVDC source PCA-10-300V-PD
rfgm-manual-en.pdf
Download user manual (1.4MB)
rfgm-800(1500)-step.zip

Download STEP model for RFGM-800(1500) (ZIP archive, 10MB)