Tri-Band Technology
Technical Overview
A radio technology that enables operation across multiple frequency bands with a single radio unit, maximizing on-site convenience.
JVCKENWOOD's tri-band technology supports three frequency bands (VHF/UHF/700-800 MHz), enabling the consolidation of multiple radios required for each frequency band into a single unit. This technology enhances customer satisfaction with radio communication environments through reduced installation space, improved portability and operability.
Operating multiple frequency bands with a single radio unit
Technical Details
Tri-band technology enables multi-band and high-efficiency operation. This is achieved through a complex transmitter coupler circuit design, high-density mounting to minimize circuit interference, and a compact, low-power radio receiver IC.
• Tri-band compatible transmitter coupler circuit
The transmitter coupler is a circuit composed of wiring patterns on a PCB (printed circuit board) and is used for controlling transmission output and detecting the antenna connection status. In a tri-band device, forward and reverse detection circuits are required for each of the three frequency bands, totaling six detection circuits. To achieve such a complex configuration, we optimize the wiring pattern through repeated electromagnetic field simulations, resulting in excellent electrical performance comparable to that of a single-band device.
Tri-band transmission coupler circuit
• High-density mounting
To optimize the tri-band structure, we have pursued technologies that enable high-density mounting of numerous circuits. In addition, we have implemented electromagnetic shielding on the circuit board to minimize mutual interference between different frequency bands, even in environments with mixed frequency bands.
High-density tri-band structure
• Adoption of a direct conversion IC
A direct conversion IC is an integrated circuit that directly converts the received high-frequency signal to a baseband signal. This IC integrates the signal reception and PLL (phase-locked loop) sections, achieving high performance and miniaturization of a radio unit.
Products Incorporating This Technology
Examples of products incorporating this technology
