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Query: hybrid antenna
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Which balun to use? The hybrid balun promises advantages over both voltage and current baluns by ZS1AN
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The Cedevita-20 is a hybrid monoband antenna, the result of merging the radiator of a shortened vertical with one element of a dipole. It fits on most balconies and must be hung from the ceiling. By ik1zyw Paolo Cravero
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Antennas that use a combination of vertical and horizontal polarisation.
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MQ-1 four band HF beams 20,15,10,6 meters MQ-2 six band HF beams 20,17,15,12,10,6 meters, beam antennas and Hybrid Quad antennas
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This scheme can be used to combine two antennas
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Antennas, Standard Delay Line Systems, Crossfire Phasing or Hybrids
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Manufacturer for splitter and combiners, baluns, directional couplers hybrid couplers, modulators, mixers, phase discriminators, antenna feeds.
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This antenna looks like an inverted L antenna, yet it is not, it could also be viewed as a 160m off-center fed dipole antenna, it looks more like an end-fed 1/4 wave 160 meter antenna.
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Transformers can be used as part of a hybrid combiner or as phase inverters for an RX antenna array.
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This project introduces the Loggi, a hybrid antenna merging the wide frequency coverage of log-periodic dipole arrays (LPDA) with the high gain and front-to-back ratio (F/B) of Yagi antennas. Traditional LPDAs span broad frequencies with moderate gain and low VSWR, while Yagis provide high gain and F/B over narrow bands. By analyzing high-Tau LPDA designs, it was found they could nearly match the gain of VHF/UHF Yagis while maintaining excellent patterns, F/B, and front-to-rear ratios (F/R). Optimizing specific elements for target frequencies (e.g., 144.1 MHz) led to the Loggi, which uniquely features all driven elements without passive directors or reflectors. This design effectively functions as a narrowband optimized LPDA, with front elements acting like Yagi directors and rear elements like Yagi reflectors, thus enhancing gain and directional characteristics while retaining broad frequency versatility.
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This article details the development of an 80-meter antenna within the confines of a restrictive covenant community. Faced with limited space, the author explores various options before implementing a clever hybrid design: a short 30-foot vertical wire running discreetly down the building's exterior combined with a capacitive top hat installed in the attic. Computer modeling confirmed the superiority of capacitive loading over inductive loading, increasing radiation resistance from 6 to 14 ohms. The perimeter wire top hat, naturally supported by the attic structure, resonates effectively at 3.5 MHz. The system is completed with four buried 60-foot radials installed "after dark" to maintain compliance with community restrictions.
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Learn about the design and construction of a hybrid low-pass filter for HF transmitters, specifically tailored for operation in the 6 meter band. The filter utilizes a single elliptic link for high cutoff steepness and deep VHF/UHF suppression, requiring only two standard capacitor values. The article discusses the necessity for improved filtering due to changing technological landscapes and the increasing sensitivity of VHF/UHF radio channels to interference from various sources. Detailed circuit schematics and performance characteristics are provided, ensuring minimal degradation of antenna system VSWR when integrating the filter into the setup.