Wide band long slot array antennas

Scanning Performances of Wideband Connected Arrays in the Presence of a Backing Reflector

“…This is the same scope of the connected dipole arrays. In [9], the connected dipole concept was extended to the dual structure, based on slots. In [10] and [11], Green's function (GF) of such long slot arrays was derived and presented in analytical form, for both finite and infinite arrays, starting from a spectral representation of the field in each slot [12].…”

A Comparison Between the Green's Functions of Connected Slots and Dipoles in the Presence of a Backing Reflector

“…While their origin probably stems from the concept of self complementarity in [3], [4], [5], recently it was B. Hansen [6] that brought the concept of connected array of dipoles to the attention of the antenna community. In [7] the connection concept was extended to the slot based configurations. In [8] and [9] the Green's function of a long slot array was derived and presented in analytical form, for both finite and infinite arrays, starting from a spectral representation of the field in each slot [10].…”

A Novel Wideband Antenna Array With Tightly Coupled Octagonal Ring Elements

“…As compared to the simple electronic dipole elements in Munk's CSA [7] or magnetic dipole elements in Lee's long slot array [24], the new CSA design allows a compact and convenient feed structure design for the integration of dual polarization. Furthermore, the metal layer placed above the radiating aperture, working as a wide angle impedance matching (WAIM) layer, is used to compensate the impedance mismatch caused by beam scanning.…”

“…Measured results have shown that a 33 : 1 bandwidth can be realized by the fragmented aperture antenna array, and it is claimed that a 100 : 1 bandwidth can be obtained by further optimizing the configuration of the pixelated elements [23]. As another promising approach to wideband phased array design, the wideband low profile phased array using long slot aperture is also a practical implementation of Wheeler's current sheet array [24][25][26]. A prototype UHF array with 4 × 8 elements was built and fabricated by Lee et al [28].…”

“…In recent years, a fundamentally different approach to broadband array design has been developed [7,[20][21][22][23][24][25][26]. The exemplified antenna arrays based on such novel methodology serve as the practical implementations of Wheeler's theoretical "current sheet array" (CSA) concept [27].…”