The Viviana Pebble is a compact body-worn antenna designed to reduce the impact of the human body on RF transmission. With traditional whip antennas, a significant portion of RF energy is absorbed by the body when the transmitter is worn close to it, resulting in reduced range and inconsistent signal performance.

The Pebble combines an integrated ground plane with patented BodyWave technology to direct RF energy away from the body and allow it to propagate around it rather than into it. This improves radiation efficiency and reduces signal loss caused by body absorption.

In practical use, particularly when the transmitter is on the opposite side of the body from the receiver, this results in a more stable signal and increased usable range. Independent measurements show a clear gain advantage in directions where the body would normally attenuate the signal.

Main Features

• Body-worn antenna for wireless transmitters
• Patented BodyWave technology
• Integrated ground plane directing RF energy away from the body
• Reduces signal absorption by the body
• More consistent signal when worn under clothing
• Improved propagation around the body
• Compact and rugged enclosure

Where it performs best

• When transmitters are worn close to the body
• When the body blocks line-of-sight to the receiver
• During movement or rotation of talent
• Outdoor or large spaces with limited reflections

Where the difference may be smaller

• When the antenna is not close to the body
• In RF environments with strong reflections

Specifications

• Brand: Viviana
• Model: Pebble Body Wave Antenna
• Frequency range: 590–630 MHz
• Impedance: 50 Ohm
• Application: body-worn wireless transmitters

Would you like to double your wireless range?

Viviana Pebble is an innovative antenna designed for body-worn wireless transmitters used in film, television, theatre and corporate production.

In traditional wireless systems, range is often limited because the  human body absorbs and blocks RF energy. When a standard whip antenna is placed close to the body, much of the transmitted RF energy is directed into the body where it is absorbed and dissipated.

Viviana Pebble solves this problem using  patented BodyWave technology.

The rear surface of Viviana Pebble acts as a  ground plane, directing RF energy  away from the body and the patented technology of the antenna allows signals to ‘creep’ around it rather than into it.

This allows the signal to propagate far more efficiently into the surrounding space.

The result is:

• Improved usable range
• More consistent signal strength
• Greater reliability when worn close to the body

Because RF energy is directed away from the body, the transmitter operates more efficiently compared with traditional whip antennas worn against the body.

Viviana Sound Solutions offers a range of accessories designed to mount Viviana Pebble securely and discreetly.

Technical Highlights:

• Frequency range of unit: 590–630 MHz
• Provides a much better 50 Ohm resistive match across the full band, ensuring optimal power transfer from any transmitter
• Designed for on-body use, minimising detuning and signal loss
• Rugged, low-profile design making it practical for real-world production use
• Available to order with a range of custom patch cables to suit major wireless mic brands

Where Viviana Pebble Performs Best

Viviana Pebble provides the greatest improvement in situations where the body would normally block the transmitter antenna.

Typical examples include:

• Open outdoor environments
• Large studios or stages
• When transmitters are worn under clothing or costumes
• When talent frequently turns away from the receive antennas

In these scenarios Viviana Pebble can significantly improve  usable range and signal stability.

Where the Difference May Be Smaller

Viviana Pebble is designed to solve the specific problem of  body absorption.

If that problem is not present, the improvement may naturally be less noticeable.

Examples include:

• When the transmitter antenna is not close to the body
• Indoor environments with strong RF reflections

In these situations Viviana Pebble will still perform well, but the improvement compared with a whip antenna may be smaller.