Circularly polarized circular microstrip RFID tag antenna

Tseng, Yen-Ming; Kuo, Spencer; Chen, Horng‐Dean; Sim, Chow‐Yen‐Desmond

doi:10.1109/apmc.2012.6421850

Cited by 9 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, a few UHF CP tag antennas have been proposed in literature [2][3][4]. In [2], a coupling-feed circularly polarized tag antenna has been proposed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel circular polarization antenna for UHF RFID application

Liu

2013

2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA)

View full text Add to dashboard Cite

In this paper, a novel antenna for UHF RFID tag with circular polarization is proposed. The antenna is comprised of two diagonal dipoles with unequal slots to produce circularly polarized (CP) radiation and a simple tunable matching network. The measured result for power reflection coefficient (PRC) is 35 MHz (894-929 MHz) and its corresponding simulated 3-dB axial-ratio (AR) bandwidth is about 31 MHz (903-934 MHz). The overall antenna size is at 915 MHz and the maximum simulated gain is about -2.8 dB. The experimental results verify a perfectly RHCP radiation.

show abstract

“…Recently, a few UHF CP tag antennas have been proposed in literature [2][3][4]. In [2], a coupling-feed circularly polarized tag antenna has been proposed.…”

Section: Introductionmentioning

confidence: 99%

“…It has exhibited a surface area of -dB AR bandwidth of 20 MHz. A circular microstrip RFID tag antenna for CP radiation has been proposed in[4]. The antenna has a size of MHz.…”

mentioning

confidence: 99%

Novel circular polarization antenna for UHF RFID application

Liu

2013

2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA)

View full text Add to dashboard Cite

show abstract

“…In this case under free space transmission conditions, only half of the potential power transmitted from the reader can be received by the tag antenna as the polarization efficiency is −3 dB. However, if the tag antenna has polarization diversity and is not only able to receive signal in one single linear polarization, polarization matching between the reader and tag antenna can be realized, which can lead to maximum power transfer [17]. More importantly, the problem of re-radiation cancelation can be greatly reduced if tags with polarization diversity are used owing to the reduced interaction of the reflected waves.…”

mentioning

confidence: 99%

Reduction of Proximity Effects on UHF Passive RFID Systems by Using Tags With Polarization Diversity

Zhang

Crisp

Penty

et al. 2015

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

A new technique that enables passive ultra high frequency (UHF) radio frequency identification (RFID) tags to be read when they are placed in close proximity in an array is presented. This paper demonstrates that, in a linear tag array with a tag separation of 1 cm, the interaction between the backscattered waves and incident wave causes a significant degradation in tag sensitivity. It is found that the use of tags that have polarization diversity can improve the read performance when they are placed in close proximity to one another compared with conventional linear tags. Two ways of achieving polarization diversity are studied in this paper, namely: 1) using a circularly polarized tag and 2) using a cross-polarized tag pair. Both methods show an improvement in close proximity read performance and it is experimentally demonstrated that by using cross-polarized tag pairs in an array, one achieves on average a 2.6-dB increase in read power margin for a 57-tag array with 1 cm separation compared with using conventional linearly polarized tags.

show abstract

Circularly polarized UHF RFID tag antenna with capacitive loading technique

Yeh

Lin

et al. 2016

2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP)

View full text Add to dashboard Cite

Circularly polarized circular microstrip RFID tag antenna

Cited by 9 publications

References 5 publications

Novel circular polarization antenna for UHF RFID application

Novel circular polarization antenna for UHF RFID application

Reduction of Proximity Effects on UHF Passive RFID Systems by Using Tags With Polarization Diversity

Circularly polarized UHF RFID tag antenna with capacitive loading technique

Contact Info

Product

Resources

About