antenna matching

72 links - and 1 categories

Short Delta Loop for 40m - A youtube video of a Short Delta Loop antenna, only 8,5 meters per side. This project use a loading coil of 56,7 uH for electrical matching.
[ Hits: 3942 | Votes: 15 | Rating: 6.46 ]

The Ugly MacGyver 6 meter J-pole Antenna - Essentially, a J-pole is a 1/2 wave resonant antenna connected to a quarter wave matching stub. The feedline is connected at a point on the matching stub that is at the feedline's characteristic impedance. The result is 3/4 of a wavelength on one side and 1/4 wavelength on the other side.
[ Hits: 202 | Votes: 0 | Rating: 0 ]
50MHz / 6m J-pole Antenna by VK4ADC - The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarized antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
[ Hits: 442 | Votes: 4 | Rating: 6 ]
J-Pole Antenna for 50 MHz - This J-Pole is mounted on a fishing rod. The radiator L1 is an isolated copper-wire with a length of 281,5 cm while the quarter-wave matching sector L2 is made with 450-Ohm-Wireman-cable
[ Hits: 223 | Votes: 0 | Rating: 0 ]

2 element Yagi for 50 MHz - This 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents.
[ Hits: 533 | Votes: 3 | Rating: 3 ]

Cross-Yagi 10el Antenna for 70cm - 10 Elements Cross-Yagi Antenna for 433 MHz. The base of the 10el antenna is the recalculated RA6FOO antenna.Circular polarization is realized - by a phasing quarter-wave line, matching of horizontal and vertical polarization antennas
[ Hits: 176 | Votes: 6 | Rating: 8.83 ]

80 Meter Shortened Ground Plain Antenna - This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device
[ Hits: 446 | Votes: 1 | Rating: 5 ]

Full Wave Loop Antenna Calculator ^updated - Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.
[ Hits: 930 | Votes: 7 | Rating: 6.14 ]

2 Elements 20m Delta Loop - A 2 elements delta loop antenna for 14 MHz with a MMana simulation file, dimensions, pictures of this aluminium tube based delta loop antenna, and matching system details.
[ Hits: 592 | Votes: 1 | Rating: 6 ]

End-Fed 6-40 M Multiband Antenna - This project produces an inexpensive, multiband, end fed HF antenna matchbox, quick and easy to setup. This project creates a trifilar wound, 9:1 UNUN toroid matching transformer. Handles 100W and need an antenna tuner.
[ Hits: 1996 | Votes: 4 | Rating: 8.25 ]
End Fed Long Wire Antenna - The antenna is an inexpensive, multiband, end fed HF antenna. It has a matching network consisting of a toroid core and an antenna lead of 30
[ Hits: 2259 | Votes: 5 | Rating: 5.2 ]

20m Half-Wave End Fed - A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
[ Hits: 1845 | Votes: 7 | Rating: 8 ]
End-Fed HalfWave Matching Unit for SOTA operations - An end-fed half wave antenna matching unit made of 3:24 turns ratio on a FT140-43 toroid with a 150pF capacitor across the input.
[ Hits: 259 | Votes: 0 | Rating: 0 ]
End Fed Antenna with a 1:64 Matching Network - In this experiment the autor is going to explore the use of a 1:64 matching network on the End Fed Long Wire Antenna. Experiment will consist in build a 80-40-20-15-10 meter End Fed Long Wire Antenna with a 1:64 matching network from the documentation available on the internet
[ Hits: 872 | Votes: 15 | Rating: 6.73 ]

The Basics of Patch Antennas - This article explores the basic concepts of patch antennas. Topics include principles of operation, impedance matching, radiation pattern, circular polarization, bandwidth, efficiency, alternative feed types, stacked patches and higher mode behavior.
[ Hits: 805 | Votes: 1 | Rating: 9 ]

How to make a gamma match - how to make a gamma match for a antenna. The Gamma match is the most used matching device used for yagi beams.
[ Hits: 1464 | Votes: 8 | Rating: 5.38 ]
Popular Matching Networks - What happens in impedance space when the various popular matching networks (antenna tuners) are adjusted
[ Hits: 275 | Votes: 0 | Rating: 0 ]

L-Match Tuner Build for QRP Operation - An L-Match tuner is a device that can add either inductance (L) or capacitance (C) to the antenna, bridging that gap between 5000 ohms and 50 ohms, thus matching it to the radio. The L-Match tuner is an extremely useful device that every QRP operator will want to have.
[ Hits: 186 | Votes: 0 | Rating: 0 ]

Some Useful ZS6BKW Modifications - The ZS6BKW antenna evolved from an optimization of the G5RV antenna. The SWR on 80m is too high and the 40 ft ladder line matching section is a little too long on 17m and a little too short on 10m
[ Hits: 1026 | Votes: 3 | Rating: 4 ]

Blue VNA Android App - Blue VNA Android only application to control Bluetooth enabled Antenna analyzers or VNAs (Vector Network Analyzers). Supported devices are the miniVNA, the miniVNA Pro Antenna Analyzers (with or without the matching Extender) and the new miniVNA Tiny
[ Hits: 218 | Votes: 0 | Rating: 0 ]