A Novel Low-Profile Wideband Uhf Antenna

Chen, Aixin; Jiang, Tiehua; Chen, Zhizhang; Su, D.

doi:10.2528/pier11081302

Cited by 23 publications

(12 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Omnidirectional antennas are often required in modern wireless communication systems [1][2][3][4][5], but the directional antennas are more favorable in some applications [6]. There are several ways to design an antenna with a directional radiation pattern.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Wideband Loop Antenna With Parasitic Resonators

Fan¹,

Zheng²,

Cai³

et al. 2013

PIER Letters

View full text Add to dashboard Cite

Abstract-A novel coax-fed wideband loop antenna loaded with rectangular patches and U-shaped elements is presented and studied. By inserting a pair of rectangular patches inside the strip loops and employing a pair of U-shaped elements as the parasitic resonators, two additional resonances are excited and a good performance of bandwidth enhancement can be obtained. The measured results indicate that the impedance bandwidth (VSWR≤2) is about 87.1% from 1.58 to 4.02 GHz, which covers the required operating bands of DCS1800

show abstract

Section: Introductionmentioning

confidence: 99%

Design of a Novel Wideband Loop Antenna With Parasitic Resonators

Fan¹,

Zheng²,

Cai³

et al. 2013

PIER Letters

View full text Add to dashboard Cite

show abstract

“…The beam pattern could vary from one pulse transmission to another because of heat and other uncontrollable natural factors that affect the internal circuitry. The other is the fixed error of antenna system itself [33][34][35], which will bring a constant error of magnitude and phase in the image pair This error can be corrected during the compensation of the registration error.…”

Section: The Coherence Improving Algorithmmentioning

confidence: 99%

Novel Pre-Processing Techniques for Coherence Improving in Along-Track Dual-Channel Low Frequency Sar

Fan¹,

Huang²,

Jin³

et al. 2012

PIER

View full text Add to dashboard Cite

Abstract-The coherence between the complex image pair from two channels is important for improving the capability of alongtrack interferometry (ATI) processing in synthetic aperture radar (SAR) ground moving target indication (GMTI). The along-track dual-channel low frequency SAR can be easily influenced by not only mismatch errors of the image pair but also the radio frequency interference (RFI). RFI has great impacts on the joint probability density function (PDF) of magnitude and phase in the interferometric image. However, little work has been done to investigate the coherence improvement under RFI. This study develops an algorithm to improve the coherence of the image pair for along-track dual-channel low frequency SAR, which can be used by ATI. After analyzing RFI imaging in detail, it is proposed that the along-track interferometric image in the range frequency and cross-range slow time domain can be used to detect RFI. Median filters are proposed to further suppress RFI. This suppression has the same implementations to the image pair without heavy computation load. Considering RFI suppression and mismatch errors compensation, a pre-processing flow is proposed to achieve high coherence of the interferometric image in low frequency SAR. It is shown that the coherence of the complex image pair can be improved greatly by using this pre-processing flow. The effectiveness of this algorithm is demonstrated with real data acquired by an airborne along-track dual-channel P-band SAR GMTI system.

show abstract

“…A wideband dual-frequency antenna is proposed in [8], but the bandwidth cannot cover all the UHF band with VSWR less than 1.5, and the gain is not high. A novel low profile wideband UHF antenna is proposed in [9], while the size is large, and manufacture of conic is difficult. In [10], the impedance bandwidth of the patch antenna is wide, while the measured gains are low in all the bands.…”

Section: Introductionmentioning

confidence: 99%

A Uhf Rfid Antenna Using Double-Tuned Impedance Matching for Bandwidth Enhancement

Wang¹,

Liu²,

Li³

et al. 2017

PIER Letters

View full text Add to dashboard Cite

Abstract-A broadband ultra-high-frequency (UHF) Radio Frequency Identification (RFID) antenna using double-tuned impedance matching theory is proposed. This paper presents a proximity coupled vertical meandered strip feed technique based on double-tuned impedance match which results in a wide bandwidth. This antenna mainly consists of a rectangular ground plane, a U-shaped radiation patch, and a suspended vertical meandered strip (VMS) by mesas of rotated Γ-shaped strip. The Ushaped radiation patch is fed by the VMS. The simulated and measured results show that the antenna has a very wide impedance matching bandwidth of 150 MHz (820-970 MHz) or 16.8% with the voltage standing wave ration (VSWR) less than 1.5 and achieves a high gain level about 8.5 dBi. Therefore, the proposed antenna can cover the entire UHF band of 840-960 MHz and is a good candidate for universal UHF RFID applications.

show abstract

A Novel Low-Profile Wideband Uhf Antenna

Cited by 23 publications

References 36 publications

Design of a Novel Wideband Loop Antenna With Parasitic Resonators

Design of a Novel Wideband Loop Antenna With Parasitic Resonators

Novel Pre-Processing Techniques for Coherence Improving in Along-Track Dual-Channel Low Frequency Sar

A Uhf Rfid Antenna Using Double-Tuned Impedance Matching for Bandwidth Enhancement

Contact Info

Product

Resources

About