The UHF (470 - 800 MHz) market is diversifying and taking different approaches to the implementation of full band coverage with highest possible efficiency. The two main paths are single band ultra-wideband Doherty (UWB) solutions or classical or wideband Doherty solutions using sub-bands.
Ampleon supports both approaches with dedicated RF power transistors and application designs. For example, our latest BLF888E transistor is a 3-band ultra-wideband Doherty solution achieving 50 % efficiency across the band. This is a unique solution in the market.
For classical Doherty we are also developing solutions based on our upcoming BLF898 transistor which will have the highest DVB-T power capability (180 W average) and will be capable of covering the complete UHF band using a flexible output combiner design with multiple sub-bands. We are also working on an odd-mode Doherty solution based on the upcoming BLF898(S).
Whitepaper Doherty Architectures in UHF
This White Paper explains different PA architectures which can be used in today’s UHF Broadcast industry.
In this paper a brief discussion will be given to explain these new Doherty architectures and to help customers finding the best solution for their transmitter. Ampleon’s transistor family BLF8XX can support these Doherty architectures.
Please register to download the latest information.
Recommended Products
| Type | Package | Fmin (MHz) | Fmax (MHz) | PL(1dB) (W) | PL(AV) (W) | VDS (V) | ηD (%) | Gp (dB) | Test signal |
|---|---|---|---|---|---|---|---|---|---|
| BLP35M805 | SOT1371-1 | 10 | 3500 | 5 | - | 28 | 17 | 18 | CW pulsed, class-AB |
| BLP27M810 | SOT1371-1 | 10 | 2700 | 10 | - | 28 | 19 | 17 | Pulsed CW |
| BLF640 | SOT538A | 10 | 2200 | 10 | - | 28 | 31 | 19.3 | 1-c W-CDMA |
| BLF571 | SOT467C | 10 | 500 | 20 | - | 50 | 70 | 27.5 | CW |
| BLP10H630P | SOT1223-2 | 10 | 1000 | 30 | - | 50 | 68 | 18 | Pulsed RF |
| BLF642 | SOT467C | 1 | 1400 | 35 | - | 32 | 63 | 19 | CW |
| BLP10H660P | SOT1223-2 | 10 | 1000 | 60 | - | 50 | 68 | 18 | Pulsed RF |
| BLP10H690P | SOT1223-2 | 10 | 1000 | 90 | - | 50 | 68 | 18 | Pulsed RF |
| BLP10H6120P | SOT1223-2 | 10 | 1000 | 120 | - | 50 | 68 | 18 | Pulsed RF |
| BLF881(S) | SOT467C(B) | 1 | 1000 | 140 | - | 50 | 49 | 21 | CW |
| BLP15M7160P | SOT1223-2 | 10 | 1500 | 160 | - | 28 | 59.7 | 19.4 | CW |
| BLF882(S) | SOT502A(B) | 10 | 860 | 200 | - | 50 | 63 | 20.6 | CW |
| BLF884P(S) | SOT1121A(B) | 470 | 860 | 300 | - | 50 | 46 | 21 | CW |
| BLF888A(S) | SOT539A(B) | 470 | 860 | 600 | 110 | 50 | 31 | 20 | DVB-T (8k OFDM) |
| BLF888B(S) | SOT539A(B) | 470 | 860 | 650 | 120 | 50 | 33 | 21 | DVB-T (8k OFDM) |
| BLF888D(S) | SOT539A(B) | 470 | 806 | - | 115 | 50 | 40 | 17 | DVB-T (8k OFDM) |
| BLF888E(S) | SOT539A(B) | 470 | 790 | - | 150 | 50 | 52 | 17 | DVB-T (8k OFDM) |
| BLF898(S) | SOT539A(B) | 470 | 806 | 900 | 180 | 50 | 32 | 16 | DVB-T (8k OFDM) |
See the complete product portfolio