or surfacewave generation , because of the ground plane. Reflectarray antennas: A review Eduardo Carrasco (1) and Jose A. Encinar (2) attached to four variable length phase delay lines was presented in [11], in the frequency range from 9.6 GHz to 11.2 GHz. Fig. 3. Basic model of a 1-bit phase-shifter consisted of a microstrip A Reflectarray with Octagonal Unit Cells for 5-G Aug 19, 2017 · 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... Slotted Tunable Reflectarray Antenna - core.ac.uk ground plane reflection. But in the presence of the patch Fig. 3 shows the reflection phase curves for the variable width slots embedded in the centre of the unit cell patch elements. Frequency tunability from 10 GHz to 8.3 GHz can ... In the design of reflectarray with variable size patches, the phase errors occur due to the fact that the for Microelectromechanical Systems (MEMS) Actuated Wave …
Ka-band variable DRA reflectarray lengths supported on substrate of same dielectric constant of DRA was de-signed[14]. A X-band rectangular DRA and circular polari-zation at X-band[15] are investigated. Dual DRA sizes supported on ground plane with variable slot lengths is il-lustrated in[16] for getting full phase cycle using superposi-tion.
PIER B : Progress In Electromagnetics Research B ... "Analysis and design of a microstrip reflectarray using patches of variable size," IEEE Symposium on Antennas and ... M. R., J. Shaker, M. Cuhaci, and A. Sebak, "Reflectarray with variable slots on ground plane," IEEE Proc. Microwave, Antennas and Propagat., Vol. 150, No. 6, 436-439 ... Electromechanical beamsteering reflectarray antenna for X ... An electromechanical beamsteering reflectarray antenna for x-band applications was designed, fabricated, and tested. Circular aperture of antenna consists of 316 elements and each element of the array is comprised of two stacked PCBs. ... A. SebakReflectarray with variable slots on ground plane. IEE Proc – Microwaves, Antennas Propag, 150 ... Reflectarray Antennas: Analysis and Synthesis Techniques
Investigations on Liquid Crystal Recon gurable Unit…
Chaharmir, M. R. et al., Reflectarray with Variable Slots on Ground Plane, IEE Proc. Microw.Antennas Propag., Vol. 150, Dec.Tsai, F.-C. and Bialkowski, M. E., A Unit Cell Waveguide Approach to Designing Multi-Layer Reflectarrays of Variable Size Patches, IEEE Phased Array Sys.
4. In log-periodic antennas having a series of substantially log-periodically scaled antenna elements including a feeder periodically coupled to said antenna elements to form loaded and unloaded portions along said feeder, the improvement …
Abstract: A novel structure using a variable microstrip ring with a slot ring on part of the ground plane is proposed as an auxiliary unit cell in a reflectarray. A progressive phase range larger than 682deg has been achieved by changing the sizes of the microstrip rings and adding slot rings on part of the ground plane. Reflectarray element using variable ring with slot on ... A novel structure using a variable microstrip ring with a slot ring on part of the ground plane is proposed as an auxiliary unit cell in a reflectarray. A progressive phase range larger than 682deg has been achieved by changing the sizes of the microstrip rings and adding slot rings on part of the ground plane. A K-band reflectarray has been fabricated and shows very good performance.
A Ku-band reflectarray using variable rings and slots on the ...
Phase-shifting cell loaded with variable capacitances for ... A new dual linearly polarized phase-shifting cell for reflectarray applications is presented. It consists of two orthogonal sets of parallel rectangular slots etched in a ground plane. Each set may be loaded with a combination of variable and fixed capacitances to provide a
Broadrange Reflectarray Element with Combined Slot and Dielectric Resonator Resonances Shin-Rou LEE 1, Eng-Hock ... 986 S. R. LEE, E. H. LIM, F. L. LO, ET AL., BROADRANGE REFLECTARRAY ELEMENT WITH COMBINED SLOT AND … Wave Port Slotted Ground Electric Field PEC Wall PEC Wall x z ... perforated ground plane and rectangular concave dip 12 GHz ... Reflectarray with variable slots on ground plane - IET Journals ... Reflectarray with variable slots on ground plane. Abstract: A reflectarray structure based on a planar aperture coupled antenna configuration is presented. Reflectarray with variable slots on ground plane ... - IEEE Xplore Reflectarray with variable slots on ground plane. M.R. Chaharmir, J. Shaker, M. Cuhaci and A. Sebak. Abstract: A reflectarray structure based on a planar ...