Reflectarray with variable slots on ground plane

Comparison of Resonant Elements of Microstrip Reflectarray ...

Radioengineering - December 2018, Volume 27, Number 4 [DOI: 10… IEEE Transactions on Instrumentation and Measurement, 2012, vol. 61, no. 5, p. 1486–1493. US6366254B1 - Planar antenna with switched beam diversity for… The antenna preferably includes a high impedance surface with a plurality of antenna elements disposed on said surface, a plurality of associated demodulators and power sensors and a switch. US4259670A - Broadband microstrip antenna with automatically… Variable impedance devices (e.g., series resonant circuits and/or transmission line tuning stubs) are connected to predetermined locations on a microstrip radiator patch for changing the effective resonant dimensions of the antenna as a … US5905465A - Antenna system - Google Patents

A first disk having radiating elements formed thereon, a second disk having radiating elements formed thereon and overlying the first disk, an electromagnetic energy reflecting disk overlying the second disk and having a first plurality of …

A microstrip antenna is provide for radiating a broad bandwidth of input signals. A pair of identical triangular patches are maintained upon a ground plane, with feed pins being connected to conductive planes of the triangular patches at … US5943016A - Tunable microstrip patch antenna and feed network… As shown in FIG. 15, a suitable connector 132 is provided on each of the leads 128 and 130 for connection to RF producing or receiving means, the leads 128 and 130 being insulated or spaced from the ground plane 122, as shown.

Phase Characterization of Reconfigurable Reflectarray Antennas ... dielectric substrate which is backed by a ground plane [2]. ... The effect of variable width slots ...

in the scattering from patch and reflection from ground plane can be avoided. This effect therefore provides the opportunity to limit the mutual coupling effects. Another significant advantage is the reduction of phase errors. In the design of reflectarray with variable size patches, the phase errors occur due to the fact that the for A Reflectarray with Octagonal Unit Cells for 5-G Applications In this paper, five suggested unit cells are presented and compared for the design of a 28-GHz reflectarray antenna that can be used for 5-G mobile base-stations. The unit cells of these... Slots in Ground Planes - Henry Ott Consultants

A DRA reflectarray with variable slot loading length supported on dielectric substrate with conducting ground plane is constructed as shown in Figure 1. The unit cell consists of rectangular DRA, with length L, width W, height H, a slot in the ground plane, with length L s and width W s, a dielectric layer of thickness h, and a conducting ...

Various reflectarray element designs were considered which included variable size patches, patch with variable length slot, patch with fixed slot fed by variable length stripline. After careful study and systematic evaluation, it was decided that the element – patch with variable length slot in the ground plane was best suited (PDF) Phase range improvement of unit cell of reflectarray There are a few kinds of phase compensation methods available for the fixed-beam reflectarray such as using open-circuited stubs [5], variable patch size [6], slot-loaded ground plane [7], slot-loaded patch [8] and the usage of electronic components [9]. A Broadband Reflectarray Using Patch With Slot Ring On