With the LDU688XLB, RES-ingenium confirms his continuous improvement strategy, keeping moving to a new line of pallets thus breaking the link with the stereotype of the classic layout Ex-Motorola (115x85mm), which until now has been the reference for the projects of UHF amplifiers.
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LDU688XLB, 220Wrms (DVB-T)
1. Uffici e Centro Progettazione Sede Legale Produzione e Collaudo
Via dei Vasari, 17 Via Enrico Berlinguer s.n.c. Via Enrico Berlinguer s.n.c.
05018 – Orvieto (TR) Italia 88040 – Pianopoli (CZ) Italia 88040 – Pianopoli (CZ) Italia
Tel: +39 0763 316333 Tel: +39 0968 35217
Fax: +39 0763 316002 Tel: +39 0968 35389
Fax: +39 0968 35336
PRESS RELEASE
LDU688XLB, 220Wrms (DVB-T)
higher power, better performances and higher efficiency.
The most powerful UHF high power broadcasting pallet available.
Orvieto, March 2011,
With the LDU688XLB, RES-ingenium confirms his continuous improvement strategy,
keeping moving to a new line of pallets thus breaking the link with the stereotype of the
classic layout Ex-Motorola (115x85mm), which until now has been the reference for the
projects of UHF amplifiers.
The goal is to be able to take full advantage of the services offered by the new generation
of power devices (LDMOS) available on the market today. The new size 133x98mm will
still allow you to combine into 19 "rack 4 pallets ensuring continuity with the structure of the
amplifier modules of the AU and XU series.
The available space has been used to optimize the matching of the BLF888BS and his
heat transfer capability; engineers have taken utmost care in the choice and placement of
these critical components in the biasing circuit with excellent results.
LDU688XLB, the most powerful pallet available today for digital application (220Wrms):
PRESS RELEASE, March 2012 – LDU688XLB, the continuous improvement strategy – Page 1 of 6
Iscritta al n. 01359920558 del Registro delle Imprese presso la C.C.I.A.A. di Catanzaro – REA n. CZ 178832
C.F. e P. IVA 01359920558 – Capitale Sociale: Euro 64.000 i.v.
2. Uffici e Centro Progettazione Sede Legale Produzione e Collaudo
Via dei Vasari, 17 Via Enrico Berlinguer s.n.c. Via Enrico Berlinguer s.n.c.
05018 – Orvieto (TR) Italia 88040 – Pianopoli (CZ) Italia 88040 – Pianopoli (CZ) Italia
Tel: +39 0763 316333 Tel: +39 0968 35217
Fax: +39 0763 316002 Tel: +39 0968 35389
Fax: +39 0968 35336
Based on the data declared by the Manufacturer (NXP) in the Application Note AN11062
NXP, Figure 1 and Figure 2 here below, RES-Ingenium confirmed with tests on the
LDU688XLB that devices BLF888BS, with better heat dissipation because soldered on the
heat sink, can guarantee improved performances (MER, Shoulders and efficiency) and
MTBF characteristics over any other UHF power pallet available today on the market.
Fig. 1 CCDF 0.01% + Drain Efficiency
(1) CCDF solder (2) CCDF_WPS-2 (3) CCDF graphite
(4) DEFF.-graphite (5) DEFF.-WPS-2 (6) DEFF.-solder
Fig. 2 Gain + Shoulder distance (4,3MHz from fC). Shoulder measured in dBc via a delta marker
(1) Gain_solder (2) Gain_graphite (3) Gain_WPS-2
(4) Shoulder_solder (5) Shoulder_graphite (6) Shoulder_WPS-
PRESS RELEASE, March 2012 – LDU688XLB, the continuous improvement strategy – Page 2 of 6
Iscritta al n. 01359920558 del Registro delle Imprese presso la C.C.I.A.A. di Catanzaro – REA n. CZ 178832
C.F. e P. IVA 01359920558 – Capitale Sociale: Euro 64.000 i.v.
3. Uffici e Centro Progettazione Sede Legale Produzione e Collaudo
Via dei Vasari, 17 Via Enrico Berlinguer s.n.c. Via Enrico Berlinguer s.n.c.
05018 – Orvieto (TR) Italia 88040 – Pianopoli (CZ) Italia 88040 – Pianopoli (CZ) Italia
Tel: +39 0763 316333 Tel: +39 0968 35217
Fax: +39 0763 316002 Tel: +39 0968 35389
Fax: +39 0968 35336
Plot 1 Lower level amplitude frequency response an input return loss of LDU688XLB.
Table 1: LDU688XLB@220Wrms DVB-T VDC 50V Idq 1.2+1.2A (Typical values).
Freq. 220Wrms DVB-T not corrected 220Wrms DVB-T correction by PTV mod.PT2090
(MHz) Shoulder(dB) MER (dB) Shoulder(dB) MER (dB) Crest Factor I (A) Eff. %
474 -32.2 30 -41 36 12.1 17.4 25.2
506 -30.8 28.8 -40.3 35.4 11.8 14.8 29.7
538 -30 27.3 -41 35.8 12 13.4 32.8
570 -30 28 -41.5 35.8 12 13.3 33
602 -31 28.4 -41 35.6 12 14.5 30.3
634 -31 28.5 -42 36 12.1 15.2 28.9
666 -30.8 28.3 -42 36 12 15.1 29
698 -30.6 28 -43 36 12.1 15 29.3
730 -30.8 28.3 -42.5 35.8 12 15.1 29
762 -30.4 28.4 -42.3 35.6 12.3 15.8 27.8
794 -31.7 29.5 -42.1 36 12.1 16.7 26.3
826 -31.6 29.4 -43 36.6 12.2 17.7 24.8
858 -30.6 28.4 -42.4 36.3 12.1 17.5 25.1
PRESS RELEASE, March 2012 – LDU688XLB, the continuous improvement strategy – Page 3 of 6
Iscritta al n. 01359920558 del Registro delle Imprese presso la C.C.I.A.A. di Catanzaro – REA n. CZ 178832
C.F. e P. IVA 01359920558 – Capitale Sociale: Euro 64.000 i.v.
4. Uffici e Centro Progettazione Sede Legale Produzione e Collaudo
Via dei Vasari, 17 Via Enrico Berlinguer s.n.c. Via Enrico Berlinguer s.n.c.
05018 – Orvieto (TR) Italia 88040 – Pianopoli (CZ) Italia 88040 – Pianopoli (CZ) Italia
Tel: +39 0763 316333 Tel: +39 0968 35217
Fax: +39 0763 316002 Tel: +39 0968 35389
Fax: +39 0968 35336
The LDU688XLB is extremely easy to correct and typical temperature of the ceramic at
220Wrms output power are exceptionally low (see thermal picture here below) because of
the further improved RES-Ingenium devices soldering technique.
Photo 1 and 2: LDU688XLB ceramics temperature of device 1 and 2 @220Wrms DVB-T (666MHz).
.
The devices are soldered on a silver plated copper carrier with a special galvanized alloy. In this way
the carrier works as an extension of the flange of the device, greatly increasing the capacity of
dissipation of the system.
PRESS RELEASE, March 2012 – LDU688XLB, the continuous improvement strategy – Page 4 of 6
Iscritta al n. 01359920558 del Registro delle Imprese presso la C.C.I.A.A. di Catanzaro – REA n. CZ 178832
C.F. e P. IVA 01359920558 – Capitale Sociale: Euro 64.000 i.v.
5. Uffici e Centro Progettazione Sede Legale Produzione e Collaudo
Via dei Vasari, 17 Via Enrico Berlinguer s.n.c. Via Enrico Berlinguer s.n.c.
05018 – Orvieto (TR) Italia 88040 – Pianopoli (CZ) Italia 88040 – Pianopoli (CZ) Italia
Tel: +39 0763 316333 Tel: +39 0968 35217
Fax: +39 0763 316002 Tel: +39 0968 35389
Fax: +39 0968 35336
Plot 3 and 4: 220Wrms DVB-T @ 474 and 570 MHz whit PT2090 adaptive correction.
Plot 5 and 6: 220Wrms DVB-T @ 666 and 762 MHz whit PT2090 adaptive correction.
PRESS RELEASE, March 2012 – LDU688XLB, the continuous improvement strategy – Page 5 of 6
Iscritta al n. 01359920558 del Registro delle Imprese presso la C.C.I.A.A. di Catanzaro – REA n. CZ 178832
C.F. e P. IVA 01359920558 – Capitale Sociale: Euro 64.000 i.v.
6. Uffici e Centro Progettazione Sede Legale Produzione e Collaudo
Via dei Vasari, 17 Via Enrico Berlinguer s.n.c. Via Enrico Berlinguer s.n.c.
05018 – Orvieto (TR) Italia 88040 – Pianopoli (CZ) Italia 88040 – Pianopoli (CZ) Italia
Tel: +39 0763 316333 Tel: +39 0968 35217
Fax: +39 0763 316002 Tel: +39 0968 35389
Fax: +39 0968 35336
Plot 7: 220Wrms DVB-T @ 858 MHz whit PT2090 adaptive correction.
This strategic choice of RES-Ingenium to break away from traditional pallet, both in size
and technology used, focusing on innovations, has already given excellent results that can
be summarized in much lower working temperature of any pallet amplifier with screw fixed
devices, dramatically increasing the MTBF of the system, with higher efficiency and easier
correction of linearity.
Team RES-Ingenium
For more information: info@res-ingenium.com
PRESS RELEASE, March 2012 – LDU688XLB, the continuous improvement strategy – Page 6 of 6
Iscritta al n. 01359920558 del Registro delle Imprese presso la C.C.I.A.A. di Catanzaro – REA n. CZ 178832
C.F. e P. IVA 01359920558 – Capitale Sociale: Euro 64.000 i.v.
