Audio Wireless Active Log Periodic Dipole Array Antenna (LPDA-WB-A)

The LPDA-A-WB may be used in an active or passive mode to suit individual applications:

• active mode with fixed bandwidth in the 470-700 MHz range with user adjustable gain of 18dB
• passive mode (when there is no dc present) can be used as a high gain
• passive antenna to receive or to transmit with the in-built filtering 470-700 MHz, passive gain boasting 5dB.

This unique design has an exceptionally low loss and a very selective band-pass filter with fixed bandwidth between 470-700 MHz. The booster section uses a digitally adjustable RF-Attenuator before the low noise RF Amplifier against RF overload and the Booster Gain adjust is after the RF amplification, both digitally adjustable RF-Attenuators are independently user adjustable in 1dB steps. The RF amplifier is an extremely high dynamic range and low noise RF amplifier offering a linear gain within the tuning range.

The LPDA-A-WB offers flexibility as well as additional front-end protection against interfering dirty RF, the booster offers 18dB user adjustable gain to compensate long antenna extension cable losses hence increased distance between the transmitter and the receiver, LPDA-A-WB finds its application in film making, documentaries, fixed installations as in studios, and theatres. Compatible with any UHF wireless receiving systems (digital or analogue) providing a directional coverage pattern.

The antennae are constructed using advanced multi-layer PCB design technique with copper-clad epoxy fiberglass to withstand heavy duty use in harsh environments, providing long life and consistent performance under difficult operating conditions. The booster box is a custom-design machined aluminum, black anodized with water resistant O-ring mounting. Mounting is made easy with integrated thread that directly mounts on to a tripod or with the supplied adaptor it can be mounted directly on to a microphone stand. Powering is through coaxial cable, power source of 10-18Vdc.

FEATURES:

• active LPDA with 18dB gain
• use as an active, passive receive or transmit
• no dcpassive mode with in-built band-pass filtering
• extremely high dynamic range RF amplifier
• input high selective band pass filter 470-700 MHz
• independently user adjustable input attenuator
• independently user adjustable booster gain
• intuitive OLED display menu
• powered through coax cable
• integrated mount adaptor
• CNC machined custom design

ACTIVE MODE:

• frequency range: 470 to 700 MHz with in-built band pass filter
• booster gain: +18dB (user adjustable in 1.0dB steps to unity)
• input attenuator range: -20dB (user adjustable in 1.0dB steps to unity)
• selectivity: -38dB @ 420 MHz and -30dB @ 750 MHz min.
• OIP3: greater than +41dBm

PASSIVE MODE (NO DC):

• frequency range: 470 to 702 MHz with in-built band pass filter
• passive gain: +5dB with in-built band pass filter 470-702 MHz

CONNECTIONS:

• RF output: 50 Ohm standard BNC-F
• mounting options: 3/8″ 16 standard tripod mount
• 5/8″ 27 adapter supplied

POWERING:

• external power: 10-18Vdc, through coaxial cable (reverse power and short circuit protected)
• current consumption@12Vdc: 75mA approx. 10mA

OUTER CASE:

• dimensions: 270 x 290 x 90
• weight: 490g