2kw+ Ldmos Blf188xr Board Linear Amplifier
A very high power solid state linear amplifier board. This board is designed for two LDMOS-FET's operating in a push-pull circuit. A Variety of RF LDMOS-FET'S can be mounted on the board. 2x BLF 188,188XR 2400w out. (in my tests the 178 and 188 gave the best IMD results). These boards are the result of a long R&D into. LDMOS FET high power linear amplifiers. I have revised my design to improve matching and IMD figures. The board features a high power transmission line transformers wound on stacked ferrite toroids. For lower IMD, lower saturation. And higher power output the board employs special quality coax yielding highly efficient impedance transformation. The dual sided 3 oz. And is 13 cm x 26 cm in size. All critical RF capacitors are ATC for best rf performance. Efficient feedback circuitry ensures stable broadband operation. I will supply all details upon request. Bias is regulated on-board and thermally fused for extra protection. Thermal tracking of bias is also provided on board. This is a populated board but without the active LDMOS devices. The board is supplied ready for your devices to be dropped in. These are very high power boards. The board has enough "headroom" to cover up most minor operating mistakes. The LDMOS devices with the "XR" are Extremely rugged devices!! The amplifiers have very good IMD since the devices are designed to loaf along at the designed power level. They are not pushed to the limit or to saturation! I was asked a few questions by members so here is my added reply. Amps are made for 160-6m.
Slight trade off to et the right balance in power/bandwidth so there is. About 10% drop on 6. As for duty cycle If the boards are mounted as needed on. A proper heat sink with a good sized copper heat spreader with 10mm thickness. And air is directed on fins as well on top of board to cool the magnetic I.
- Brand: Unbranded/Generic
- Model: 2kw blf188 board
- MPN: 2kw blf188 board
- Max. Output Power: 2400W
- Frequency Band(s): HF
- Supported Modes: FM
- Country/Region of Manufacture: Israel
- Country of Manufacture: Israel