phased array

2 Stack Match Yagi Antenna - Solves antenna matching problem with two phased antennas. Stacked rotary beams are popular. However, connecting two 50 Ohm antennas together presents some problems.

A 6 element OWA Yagi for 28MHz Priority listing - This is a high-gain, wideband OWA Optimised Wideband Array Yagi which covers the 10m band with an SWR of less than1.1:1 from 28-28.900MHz.

Vertical Radial Ground Systems - Tom, K1JJ on radial ground system applied to 160 m vertical array

7 elements OWA Yagi for 20 meters band - Optimised Wideband Array with low SWR across the whole of 20m with excellent gain and F/B. European and USA sizes

Phased 40M Wire Verticals - Experiments with phased wire vertical antennas on 40 meters at VA7ST

40M Twin Half-Square Array - 40 meters elevated vertical antenna array at VA7ST

The 80M elevated wire vertical array - This 80M antenna is a pair of raised 1/4-wave verticals

Phased Array Discussions - Interesting discussion about phased array antennas

A 2 Meter phased array antenna - Phased array Ground Planes antennas for 144 Mhz

Antenna Array basics - The Basics of Antenna Arrays By G.J.K. Moernaut and D. Orban PDF File

The N4GG Array - Need a simple, nearly invisible wire antenna with reasonable gain, lowangle radiation (for DXing) and multiband capabilities? Check out this long-overlooked design that requires no antenna tuner

Effect of tower coupling on an array - It's well known that a nearby tower can affect the performance of a vertical array, this article by NK7U describe measurements and prove interaction.

Vertical phased Array - A SM3HXD vertical phased array antenna system

The 4-Square Site - 4 Square Vertical Array website dedicated to vertical arrays antenna installations worldwide by G4ATA

Multi-loop Rectangles and Compact Arrays - VHF antenna array that packs a lot of gain into a small volume article by N2DT

G3WZT Phased Verticals - Vertical phased antenna systems plans by G3WZT

Phased Array Adjustment - KM5KG article presents a lumped-parameter tee-network model of the coupling between radiating elements in a phased array in order to provide a physical and intuitive understanding of phased array operation and adjustment interactions

Bobtail dipole - Bobtails are vertical arrays that look like the letter "E" turned 90° clockwise onto its tails. They have 3 quarter wave vertical elements and are one wavelength long. The Half Square is a shortened Bobtail- it has 2 quarter wave vertical elements and is a half wave long.

An intro to OWA Quad's Priority listing - An introduction to OWA (Optimised wideband array) 50Ohm direct feed Quad beam antennas

The OWA Yagi Priority listing - An introduction to the OWA (optimised Wideband Array) Yagi antenna

BiQuad 144/430 MHz - A vertically polarized broadside and collinear array by KE4UYP

UHF VHF Folded Dipole - Dual band 2 m and 70 cm folded colinear aerial array project by G2BCX

Curtain Antennas - Lazy H Antenna, Bi-Square, Sterba Curtain, HR, HRS, and USIA Curtain Antenna Arrays at W8JI

HiZ-Antennas - High impedance amplifiers for shortened vertical antennas, Array matched and Optimized 15dB Preamplifier

HI-Z Antennas - HF receiving systems and components, band pass filters, array controllers, HI-Z pre amplifiers