A bandwidth-enhanced low-profile antenna for in-machine wireless harness communications and its clearance distance evaluation

Ohira, Masataka

doi:10.1109/aps.2013.6711148

Cited by 5 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, antenna characteristics are extremely significant for wireless communication in spaces enclosed by metal objects. These characteristics are significantly affected by proximate objects (particularly metals); therefore, antennas that are robust to metals are essential for wireless communication in spaces enclosed by metal objects [4].…”

Section: Introductionmentioning

confidence: 99%

A folded monopole antenna with variable input impedance by connecting additional elements

Nakagawa

Mizutani

Michishita

et al. 2021

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

A folded monopole antenna (FMA) with two different input impedances were investigated to develop an antenna that is robust to metal for applications in a space enclosed by metal objects. An antenna with a variable input impedance is required for improving its robustness to the metal. An FMA with a novel structure is proposed to control the input impedance using a simple configuration. The structure comprises six additional elements parallel to the FMA. However, the number is not limited to six. Some additional elements are electrically connected or disconnected depending on the requirement. Method of moment (MoM) and characteristics mode analysis (CMA) are used in the simulation. The MoM results demonstrate that the input impedance can be adjusted in a step‐wise manner based on the number of additional elements connected to the FMA. This result is similar to that of the input impedance of an FMA with different strip widths considering impedance step‐up ratios (SURs). Furthermore, the change in the antenna characteristics owing to the non‐connected additional elements is minimal. The CMA results reveal that the proposed antenna has the same operation mode as the FMA with different strip widths considering impedance SURs.

show abstract

Section: Introductionmentioning

confidence: 99%

A folded monopole antenna with variable input impedance by connecting additional elements

Nakagawa

Mizutani

Michishita

et al. 2021

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

show abstract

“…Of particular note, antenna characteristics are a significant issue in closed space wireless communication. It is known that the antenna characteristics are strongly influenced by proximate objects (especially metal), so near-metal-insensitive antennas are essential for closed space wireless communications [4]. This problem was targeted in a previous study that examined multiple antennas and switched among the antenna elements in an effort to increase robustness against proximate objects [5].…”

Section: Introductionmentioning

confidence: 99%

A Study on Antenna with Characteristics of Insensitive to Metal for Installation in Proximity to Two Metal Walls

Nakagawa

Michishita

Morishita

2019

JASSE

View full text Add to dashboard Cite

In order to achieve a near-metal-insensitive antenna for closed space wireless communications, the impedance characteristics of folded monopole antennas (FMA) are of intense interest. The characteristics of a near-metal-insensitive antenna are basically not influenced by proximate objects, especially metal. This paper investigates the antenna characteristics when the antenna approaches metal plates in multiple directions to replicate an actual use environment. The results allow us to develop a higher impedance model that yields greater antenna performance than the conventional middle impedance model.

show abstract

“…It is known that the antenna impedances are strongly influenced by the near object (especially metal), so the near-metal-insensitive antennas are strongly required for closed space wireless communications [4,5].…”

Section: Introductionmentioning

confidence: 99%

Near-metal-insensitive antenna for closed space wireless communications

et al. 2017

View full text Add to dashboard Cite

In order to obtain near-metal-insensitive antenna for closedspace wireless communications, the impedance characteristics of U-shaped folded monopole antenna is investigated in detail. In this Letter, the nearmetal-insensitive means antenna VSWRs are hardly influenced by the near object, especially metal. The simulated and measured results show that the proposed higher impedance model has stronger near-metal-insensitiveness than the conventional middle impedance model. The simulated and measured results show that the antenna gains of higher impedance models are 3 dB greater at maximum than those of middle impedance models, when metal plane approaches. Keywords: antennas, U-shaped folded monopole antenna, closed space wireless communications, near-metal-insensitive antenna, robust antenna Classification: Antennas and Propagation References[1] T. Kobayashi, "Measurements and characterization of ultra wideband propagation channels in a passenger-car compartment," IEICE Trans.

show abstract

A bandwidth-enhanced low-profile antenna for in-machine wireless harness communications and its clearance distance evaluation

Cited by 5 publications

References 5 publications

A folded monopole antenna with variable input impedance by connecting additional elements

A folded monopole antenna with variable input impedance by connecting additional elements

A Study on Antenna with Characteristics of Insensitive to Metal for Installation in Proximity to Two Metal Walls

Near-metal-insensitive antenna for closed space wireless communications

Contact Info

Product

Resources

About