Using Thick Substrates and Capacitive Probe Compensation to Enhance the Bandwidth of Traditional CP Patch Antennas

Kovitz, Joshua M.; Rahmat‐Samii, Y.

doi:10.1109/tap.2014.2343239

Cited by 112 publications

(69 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where Q is the quality factor of the resonant cavity for the patch antenna [26], [27]. With more complex structures such as the CP E-shaped patch, one might further increase the bandwidth beyond this limit by bringing the resonant frequencies of multiple modes closer together.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Broadband MEMS RHCP/LHCP Reconfigurable Arrays Using Rotated E-Shaped Patch Elements

Kovitz

Rajagopalan

Rahmat‐Samii

2015

IEEE Trans. Antennas Propagat.

Self Cite

105

View full text Add to dashboard Cite

A novel broadband RHCP/LHCP reconfigurable patch antenna array using an E-shaped patch antenna element is investigated. By applying Particle Swarm Optimization, a 17% S11-AR bandwidth was achieved and verified through measurement for the isolated element using MEMS switches at an overall substrate thickness of 0.092λ0. The achieved bandwidth is significantly higher than the current state-of-the-art in single-layer, single feed CP patch element designs with similar substrate thickness. A small percentage of the upper frequency band experiences a pronounced beam squint similarly to other thick substrate CP patch antennas. To overcome the beam squint, a novel rotated-element configuration is implemented to force pattern symmetry. Derivations of pattern symmetry and network effects are also shown. The final design prototype using rotated elements provides a measured 20% S11-AR bandwidth with good radiation pattern stability.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Broadband MEMS RHCP/LHCP Reconfigurable Arrays Using Rotated E-Shaped Patch Elements

Kovitz

Rajagopalan

Rahmat‐Samii

2015

IEEE Trans. Antennas Propagat.

Self Cite

105

View full text Add to dashboard Cite

show abstract

“…The use of thick substrate for a fixed antenna layout area reduces the aspect ratio and improves gain in line with general considerations as well as in line with the microstrip cavity patch model. The downside effect of this method is that the feeding pin becomes longer, and due its inductive behavior, it impacts on the impedance matching …”

Section: Antenna Designmentioning

confidence: 99%

A circularly polarized wideband high gain patch antenna for wireless power transfer

Carlo

Donato

Mauro

et al. 2018

Micro & Optical Tech Letters

View full text Add to dashboard Cite

This article deals with a microstrip patch antenna working at 868 MHz, suitable for the radio frequency wireless power transfer and energy harvesting applications. The proposed monolithic antenna is compact, lightweight and it is printed on a thick substrate in order to maximize the total gain in the broadside direction. The antenna radiates at 868 MHz with a fractional impedance bandwidth of 5% and it shows a gain of 4.14 dB.

show abstract

“…A lot of studies have been published on performance improvement of patch antennas, such as (i) use of large number of patch antennas in array configuration [1] (ii) increasing the substrate thickness [2] (iii) optimizing the impedance matching of microstrip patch antenna by the use of shorting pins, plates, posts, etc. [3] (iv) using high permittivity substrates [4] (v) using multiple substrates [5] (vi) loading conventional patch antenna by artificial materials [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…The designed array produced a considerable gain of 16 dBi but did not obtain any improvement in bandwidth. In [2], Kovitz and Samii used a thick substrate to enhance the bandwidth of a microstrip patch antenna. Similarly, in [3], Chow and Wan tried to miniaturize the antenna by using shorting pins near the feed probe.…”

Section: Introductionmentioning

confidence: 99%

SRR Superstrate for Gain and Bandwidth Enhancement of Microstrip Patch Antenna Array

Arora¹,

Pattnaik²,

Baral³

2017

PIER B

View full text Add to dashboard Cite

Abstract-This article presents a microstrip fed patch antenna array, loaded with metamaterial superstrate. An unloaded antenna array resonates at IEEE 802.16a 5.8 GHz Wi-MAX band with gain of 4.3 dBi and bandwidth of 425 MHz. However, when the same array is loaded with a metamaterial superstrate, composed of a pair of Split Ring Resonators (SRR), there is simultaneous gain and bandwidth improvement to 8 dBi and 680 MHz, respectively, which corresponds to gain improvement by 86% and bandwidth enhancement of 60%. The fabrication of this proposed antenna array is done, and its simulated and measured results are compared. Equivalent circuit model of this composite structure has been developed and analyzed. The electrical dimension of the patch is 0.23λ × 0.3λ.

show abstract

Using Thick Substrates and Capacitive Probe Compensation to Enhance the Bandwidth of Traditional CP Patch Antennas

Cited by 112 publications

References 20 publications

Design and Implementation of Broadband MEMS RHCP/LHCP Reconfigurable Arrays Using Rotated E-Shaped Patch Elements

Design and Implementation of Broadband MEMS RHCP/LHCP Reconfigurable Arrays Using Rotated E-Shaped Patch Elements

A circularly polarized wideband high gain patch antenna for wireless power transfer

SRR Superstrate for Gain and Bandwidth Enhancement of Microstrip Patch Antenna Array

Contact Info

Product

Resources

About