Broadcast News

Bookmark and Share

Dielectric To Launch New FMP Antennas

News Image
Dielectric will soon bring the high-efficiency, low windload, and reliable innovation of its broadband pylon TV antennas to FM broadcasters.

Dielectric's new FMP antennas represent the broadcast industry's first slot cavity microstrip FM antenna product family, bringing novel benefits to high-power FM broadcasters. Benefits include multicasting, pattern flexibility, increased reliability and small tower footprint. Dielectric will publicly share full details of the FMP family for the first time at the forthcoming 2022 NAB Show (April 24-27, Las Vegas Convention Center, Booth W7107.)

"Television broadcasters have long valued pylon antennas for their straightforward designs, versatility and structural benefits such as low wind load," said Keith Pelletier, Vice President and General Manager, Dielectric. "The cylindrical design attributes of pylon antennas historically translated to narrow bandwidth characteristics that were impractical for FM signals. Dielectric’s engineering breakthroughs introduce techniques to increase that bandwidth, making full-band FM operation in pylon antennas a reality."

The engineering breakthroughs include reducing the antenna Q factor, which improves the bandwidth from one to 20 percent; and stabilizing the H:V ratio across the band. The 20 percent bandwidth translates to full FM band operation, which is the key goal of the FMP antenna’s design. Dielectric has also included its patented parasitic dipole, which adds a vertical component to the existing horizontal signal. This creates more pattern options for FM broadcasters, including elliptical and circular polarization, and contributes to the substantial bandwidth increase.

While Dielectric's special pylon designs for FM radio differ from TV systems, the FMP family carries over many traditional pylon antenna benefits including optimal downward radiation, smaller size and lower weight. For example, FMP antennas reduce the number of parts used in equivalent ring-style antennas by more than 60 percent. The streamlined componentry also improves reliability over the long term as there are far fewer parts to repair or replace.

The pylon design also provides broadcasters and tower crews with top-mounting options, in addition to the traditional side-mounted configurations of ring antennas. This is ideal for high-power FM stations that want a true top-mounted omnidirectional antenna. The FMP can handle input powers of 100kW and higher, which also makes the antenna excellent for combined operation of multiple stations.

Dielectric's FMP designs use full-wavelength spacing between antenna elements. This reduces the number of antenna elements required compared to ring-style designs, which require half-wavelength spacing, hence more elements, to cover the full FM band. The efficient design is also easy to scale. Antennas are built in four-layer building blocks and can be increased to eight or 12 bays to suit higher power requirements and elevation pattern gains.

Dielectric's abilities and drive to push innovation is showcased further with the actual FMP antenna design process, which was completed in a virtual environment and then quickly built to validate the designs. This process would traditionally take years and numerous iterations of parts to develop the antenna. Dielectric recently established a team of specialized engineers to create new designs quickly and efficiently using HFSS (High Frequency Simulation Software), which greatly accelerated the development process.

Dielectric, which turns 80 this year, revolutionized FM broadcasting in the 1960s with the first dual-polarized antenna, which introduced the concept of circular polarization from a single FM antenna element. The company again changed the game in the late 1970s with a quadrupole design that unveiled bandwidth improvements that remain present in modern ring-style antennas. Pelletier cites these examples as the roots of the innovations behind the FMP family, while also incorporating Dielectric’s experience in building pylon systems for TV stations.

Top Related Stories
Click here for the latest broadcast news stories.

Dielectric's Presence Across The Philippines Continues
Dielectric's presence across the Philippines continues to grow as regional partner 90 Degrees North has won several TV and FM projects that will bring
Dielectric To Unveil New Advanced Topology Solution
Dielectric's busy NAB pre-season continues with a third new product innovation that reimagines the RF filter topology as an analysis and troubleshooti
Dielectric Unveils Reconfigurable Manifold Combiners
Dielectric has added another industry-first to its legacy with the introduction of reconfigurable manifold combiners for multi-station RF facilities.
Dielectric To Unveil Top-Mounted, Free-Standing UHF Broadband Pylon Antenna
Dielectric is to introduce its first top-mounted, free-standing UHF broadband pylon antenna at NAB Show 2023, building on more than 15 years of field-
Dielectric To Unveil New FM-Ring Style Antenna
NAB Show 2024 brings a new entry to Dielectric's revered DCR range of FM antennas, extending the benefits of its lightweight, ring-style designs acros
Energy FM is the most popular pop music radio station on the Isle of Man, situated between England and Ireland with a population of 85,000 people. Ene
WorldCast Systems Updates Its New FM Transmitter Range
WorldCast Systems has announced key updates on its new FM transmitter range, the Ecreso FM AiO series. Since the launch September 2022 of its 1kW vers
Dielectric Extends Signal Coverage For EPTV
Dielectric has announced that EPTV has significantly improved over-the-air performances for their key stations in Campinas and Ribeirão Preto in the s
Jampro Antennas / RF Systems' keep FM stations on track
Jampro Antennas / RF Systems’ quick turnaround capabilities recently allowed three FM stations in the Educational Media Foundation's (EMF) K-LOVE netw
ENCO Enables Students To Operate Radio Station WRFH-FM
ENCO has enabled students at Hillsdale College in Hillsdale, Michigan, to intuitively operate low-power radio station WRFH-FM, with minimal training r
Broadcast Solutions Designs And Implements New Media Network
Broadcast Solutions has designed and implemented a new media network based on fibre for the Staatstheater in Darmstadt, Germany. The new network provi
Riedel Communications Announces Forward Thinking Designs
Riedel Communications has announced that Forward Thinking Designs is using Riedel's MediorNet FusioN IP edge devices and MediorNet MuoN SFPs in a Virt
BAND FM Upgrades Main Studio
Radio Bandeirantes is a network of radio stations in Brazil, belonging to the Bandeirantes de Comunicação Group, based in São Paulo. Radio Bandeirante
Broadcast Solutions Designs Remote Production Environment
Broadcast Solutions has designed and implemented a complex and innovative remote production environment for the new sports network Dyn Media. NEP Germ
Visix Adds Digital Designs To Its epaper Product Line
Visix has added digital desk signs to its epaper line of products to further support hybrid workplaces. The new EPS 42 epaper desk sign is small, ligh