Green Base Station Antenna Solution

We promote the development and application of Green Antenna with the aim of reducing energy consumption and low carbon.

Industry Overview

Green Antenna

By optimizing the internal network and adopting transmissive radiators, radiation efficiency is improved and power consumption is reduced. In addition, non-toxic,harmless and recyclable eco-friendly materials are used.

Industry Challenges

Crowded antenna space and severe multi-band interference

The coexistence of multiple technologies (2G-5G) and frequency bands has led to a surge in the number of antennas, causing a serious shortage of tower-mounted antenna space. Low-frequency antennas are huge and tend to block or interfere with high-frequency signal radiation, affecting coverage quality. Multi-band integration design saves space, but exacerbates mutual coupling and interference between antennas.

High energy consumption and rising operating costs

The significant increase in the number of channels in 5G Massive MIMO antennas has substantially raised base station power consumption. Traditional antenna feed networks suffer from considerable cable losses, with energy wasted as heat and overall efficiency remaining low. High power consumption directly drives up electricity expenses (OPEX), placing continuous cost pressure on operators.

Complex operation and maintenance, lack of intelligent sensing

For traditional antennas,it is impossible to remotely monitor or adjust their installation angle or status. Passive components inside the antenna are prone to passive intermodulation (PIM) interference due to aging or environmental factors, which is difficult and time-consuming to identify. Maintenance personnel often need to climb towers for inspection, resulting in low efficiency and inability to meet dynamic network optimization needs.

Our Solution

Global Passive IBS Vision

As Indoor Distribution Integration Expert, ZTT is committed to provide professional passive In-building solutions, including designation and packaged goods for all above solutions.

DAS Solution 1.0

DAS1 is the traditional DAS solution which is well versed by ZTT. ZTT is available to provide services such as system design, package solution and installation instruction.

Roomtop Solution 1.0

Roomtop 1.0, a new wireless in-building solution since 2017. It use leaky cable to install above the ceiling to connect matching components and equipment to achieve indoor wireless signal coverage.

DAS Solution 2.0

Based on DAS 1.0, using aluminum feeder instead of copper feeder, achieve indoor signal coverage with more economical and environment-friendly way. Maintain the original link design system based on DAS 1.0. Maintain the original passive material and related accessories.

Roomtop Solution 2.0

ZTT developed aluminum outer conductor Roomtop leaky cable, which is Transmisson Cable of Roomtop 2.0, verified by performance test, realized cost reduction compared with DAS 1.0. Roomtop 2.0 is more cost-effective than DAS 2.0 due to less construction labor in open and uncovered indoor scenarios.

Value Contained

High radiation efficiency

The Green Antenna achieves a radiation efficiency of over 75% compared to a conventional antenna's 65%, meaning it utilizes input power more effectively for better system performance and energy

High gain

With identical port configurations and frequency bands, the Green Antenna delivers 1–1.5 dBi higher gain, resulting in stronger signal strength, wider coverage, and improved link reliability.

Low power consumption

The power consumption is reduced by 25%. As result, electricity expenses and operating costs are reduced.

Successful Cases

Katara Towers Project Lusail_MIMO

In Qatar, we have collaborated with the operator Ooredoo to achieve high-quality indoor wireless signal coverage.

Nantong Hefeng Building Turnkey Project (Roomtp 1.0)

Leaky Cable(7/8”)with terminated with omni antenna.

Wall Material: Heavy Concrete, Partition Dry wall, Glass Window, Plaster Dry wall, Elevator Cage, Heavy Wood Door.

Floor Height: 3m; Part Height: 2.5m; Ceiling Height: 2.1m; Wall Height: 3m.

5G NR: n41 2600 MHz; Bandwidth: TDD 100MHz; SISO.

KPI SS-RSRP＞-85dBm of 90% of covered area.

Signal source input power：approximately 1W.

Single Layer Coverage Area: 1361 m²

Korea Operator LG U+(DAS 2.0)

LTE Band, 850MHz, 2.1GHz

Single Layer Coverage Area: 1070 m²

Solution: All the cable are aluminum RF feeder cable, mostly 2/5”，few 1/2”.

China Parking Lot(Roomtop 2.0)

1/2” leaky cable + 2 directional panel antennas

The antenna is installed at the end of leaky cable

Application Floor: The underground floor in the high-rise residential area

Single Layer Coverage Area: 7000 m²