COBHAM SOL4MTX Especificações descarregar pdf (Página 25)

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SECTION 3 – Transmitter Products

Digital Microwave L-Band Linear RF Ampliﬁer

The Cobham Digital RF amplifiers bring a new level of performance and

reliability to microwave transmission of digitally modulated video. The

linear RF power amplifier provides 5 watts of RF power into any load.

The linear amplifier features domo technology at its core and is ideal

for digital transmission applications in surveillance, law enforcement,

military UAV and UGV, airborne data/telemetry and television

broadcasting. It is designed to amplify COFDM digitally modulated

signals (QPSK, 16-QAM) and features broadband operation, while

requiring a minimum of DC current.

Only minimum heat sinking is required for the high output models

in normal operation. Packaged in a rugged aluminium housing, the

amplifier construction lends itself to applications where extreme

environmental conditions are the norm. Chassis connectors are

environmentally protected, making the amplifier ideal for airborne

operations where it can be mounted on a helicopter skid.

The integral lineariser minimises distortions typically associated with

conventional RF amplification techniques. The amplifier is designed to

meet the stringent requirements of the DVB-T spectral mask and may

be used for COFDM, QPSK, QAM and CW applications.

Input and output port protection is provided with a VSWR better

than 2.0:1 across the frequency band providing excellent matching

into filters. Reverse polarity protection and short circuit protection are

standard features.

Features:

Designed for Digital Modulation •

- COFDM, QPSK, BPSK

Ultra linear•

High efﬁciency•

Operating gain •

- 5W: 17 dB typical

RF ports are open and short protected•

Short circuit/over-voltage protection•

Reverse polarity protection•

11 - 28 Vdc input•

Rugged packaging•

Mute function•

Speciﬁcation:

Electrical

Frequency range L band: 1.15 to 1.4GHz

Input/output protection Open and short circuit

VSWR

≥

-14 dB input and output return loss

Non-harmonic spurious output > -65 dBc Typ.

Nominal drive +20 dBm

Overdrive capability Pin (nom) + 3 dBm (typ.)

Modulation formats COFDM, QAM, CW

Reverse polarity protection

Short circuit protection

Gain ﬂatness ±0.5 dB across operating band

Operating gain 5W: (17 dB typ.)

Output power +37 dBm

ACPR -30 dBc (typ.)

OIP3 @ Pop (typ) 5W: 37 dBm

Power added efﬁciency 15% typical

PA mute on PTO

Status LED ON/STBY

Supply voltage +11 Vdc to +28 Vdc

Supply current 5W output: 3.8 A (typ.) @ 12 Vdc

Environmental

Operating temperature -15 to +60 ˚C, Baseplate

Relative humidity 0 to 95%, non-condensing

Environmentally protected

Mechanical

DC input connector PTO 4 pin

- A Pin - V+

- B Pin - forward power

(normal high, goes low if o/p is 6 dB less than 37 dBm)

- C Pin - GND

- D Pin - Mute - pull low to mute

Housing Milled aluminium (nickel plated)

Dimensions H 35.5mm, W 121.5mm, L 169.5mm

Weight Approx 1.5kg

RF input SMA female (sealed)

RF output TNC female (sealed)

Product Code:

SOLAMP5W-115140

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