Wide-Band Slot Antenna Arrays With Single-Layer Corporate-Feed ... Zaman, A. ; Kildal, P. (2014) "Wide-Band Slot Antenna Arrays With Single-Layer ... due to the long line effect [9] (i.e. different delays to each element). In a single ... Design of a 45-degree Linearly-polarized Hollow-waveguide Slot Two ... 1. Introduction. Hollow-waveguide slot array antennas [1] have been widely used in the milli-meter band ... gain is narrow due to the series feed and the long-line effect. ... the wide bandwidth of gain and the high aperture efficiency. It can be ...
International Journal of Antennas and Propagation - Hindawi
A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is [dubious – discuss] a multi-element, directional antenna designed to operate over a wide band of frequencies. It was invented by Dwight Isbell and Raymond DuHamel at the University of Illinois in 1958. Parameter study and design of wide-band widescan dual ... dual-polarized TSA array with about 4.5:1 bandwidth for a scan volume of not less than =45 from broadside in all planes. Index Terms— Antenna arrays, broad-band antennas, slot an-tennas. I. INTRODUCTION THE stripline-fed tapered slot antenna (TSA) array was introduced by Lewis et al. [1] in 1974. Its potential for wide-band and widescan ... Wide Bandwidth Antennas and Arrays - UMass Amherst Wide Bandwidth Antennas and Arrays Dan Schaubert. ... Finite Array Effects for Wide Bandwidth 8x8 Array of Dielectric-Free Vivaldi Antennas Broadside beam Wide-angle scanning wide-band phased array antennas of antenna elements suitable for wide-angle scanning array antennas, and the study of scan blindness effects and edge effects for this type of antennas. Wide-angle scanning arrays are useful in radar applications, and the designs considered in the thesis are intended for an airborne radar antenna. After a study of the wide-angle
BEHDAD AND SARABANDI: WIDE-BAND SLOT ANTENNA DESIGN 477 TABLE I PHYSICAL AND RADIATION PARAMETERS OF THE TWO BROAD-BAND MICROSTRIP-FED SLOT ANTENNAS OF SECTION II Fig. 4. Bandwidth of moderately-wide slot antenna in the wide-band mode of operation as a function of aspect ratio ( W=L ) , feed impedance, and location of
Design of a Wideband Widebeam Vivaldi Phased Array Antenna for X ... Index Terms Phased Array antenna, Tapered slot antenna,. Radar, stripline ... frequency band as long as antenna parameters like shape, total length, dielectric ... W-band High Gain TE220-Mode Slot Antenna Array with Gap ... - NSFC cavity (SIC) excited 2×2-slot antenna subarray for wideband and high-gain W- band ... long-range high resolution radars and sensors, gigabyte point-to-point ...
微带天线读书(一)： Microstrip Antennas: The Analysis and ...
Wideband waveguide slot array antennas with corporate-feed ... We design and fabricate double-layer slotted waveguide array antennas with wide bandwidths and high efficiencies for 120 GHz and 350 GHz bands. To achieve high gain and high efficiency in high frequency bands, the diffusion bonding technique of plate laminated waveguide is used as a fabrication method. The antennas with 16×16 slots show about 70% efficiency with 32 dBi gain and about 50% ... A microfabricated low-profile wideband antenna array for ... Figure 8c,d show the cross sections of the top part of a 100 µm thick square strut and two sides of the 40 µm wide slot ... Slot Array Antenna in the 60-GHz Band. ... as long as you give ... Antennas: The Slotted Waveguide Antenna (Planar Array of ... The problem arises because the physical dimensions along the E-plane is much shorter than that along the H-plane (the slotted waveguide is long but thin). In general, a longer antenna (or longer array) produces a narrower beam. This problem can be circumvented by arranging slotted waveguides in parallel, as shown in Figure 1. Figure 1. Circular Array of Wideband 3D Vivaldi Antennas - IEEE ...
This application is related to slot-array antennas, in particular, to wide-bandwidth long-slot antenna arrays. Slot-array antennas have apertures theoretically capable of maintaining a constant driving impedance of 377 ohms (Ω) over a wide-bandwidth, for example, over a bandwidth greater than F max −0.01*F max (i.e., 100:1).
Broadband array antenna
International Journal of Antennas and Propagation is ... International Journal of Antennas and ... “Combined feed network for a shared-aperture dual-band dual-polarized array,” IEEE Antennas and Wireless Propagation ... A Broadband Quasi -Yagi Antenna Array - UCLA Microwave Electronics Lab - First word