Search results for: Zhengpeng Wang

Items from 1 to 12 out of 12 results

article

Parasitic circular patch antenna with continuously tunable linear polarization using liquid metal alloy

Chang Xu, Yi Wang, Jianhua Wu, Zhengpeng Wang

Microwave and Optical Technology Letters > 61 > 3 > 727 - 733

This article presents a center‐feed parasitic circular patch antenna with continuously tuning linear polarization performance. Eutectic gallium‐indium liquid metal alloy is employed to tune the angle of linear polarization continuously. The antenna is feed at the center of a circular patch with a ring slot. The rotational symmetry of the antenna helps maintain the impedance and radiation pattern at...

article

Wideband Frequency-Domain and Space-Domain Pattern Reconfigurable Circular Antenna Array

Zhengpeng Wang, Peter S. Hall, James R. Kelly, Peter Gardner

IEEE Transactions on Antennas and Propagation > 2017 > 65 > 10 > 5179 - 5189

This paper presents a wideband circular antenna array with a frequency-domain and space-domain reconfigurable radiation pattern. A wideband circular array antenna is designed with omnidirectional radiation pattern, in azimuth direction, throughout the whole frequency band. The antenna array consists of eight TEM horn antennas. The antenna array exhibits an omnidirectional azimuthal radiation pattern...

article

Dual-Band Patch Antenna With Filtering Performance and Harmonic Suppression

Chun Xu Mao, Steven Gao, Yi Wang, Benito Sanz-Izquierdo, more

IEEE Transactions on Antennas and Propagation > 2016 > 64 > 9 > 4074 - 4077

A novel design of a dual-band antenna with integrated filtering performance is proposed. A low-profile aperture-coupled U-slot patch antenna is employed for the dual-band operation with a uniform polarization, which is fed by a dual-mode stub-loaded resonator (SLR). The U-slot patch works as a dual-mode resonator of the dual-band filter as well as the radiation element. The odd- and even-modes of...

article

An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

Chun-Xu Mao, Steven Gao, Yi Wang, Zhengpeng Wang, more

IEEE Transactions on Microwave Theory and Techniques > 2016 > 64 > 6 > 1798 - 1805

In this paper, a new design of an antenna array with integrated functions of filtering, harmonics suppression, and radiation is proposed. The device employs a multi-port network of coupled resonators, which is synthesized and designed as a whole to fulfill the functions of filtering, power combination/division, and radiation. The 50-

$\Omega $

interfaces between the cascaded filter, power divider,...

article

Improved Multimode TRL Calibration Method for Characterization of Homogeneous Differential Discontinuities

Liang Wan, Quanli Li, Zhengpeng Wang, Jianhua Wu

IEEE Transactions on Instrumentation and Measurement > 2015 > 64 > 3 > 694 - 703

The multimode thru-reflect-line (TRL) calibration technique is widely applied to characterizing differential discontinuities. However, its accuracy is highly dependent on the inhomogeneity degree of differential transmission lines. In particular, in the case that the calibration structures are immersed in a homogeneous medium where different modes travel with the same propagation constant, the conventional...

chapter

Exponentially tapered dielectric loaded probe for accurate near field measurements

Zhengpeng Wang, Xianzhong Chen, Weilong Wang, Meng Li, more

The 8th European Conference on Antennas and Propagation (EuCAP 2014) > 3404 - 3407

2014 8th European Conference on Antennas and Propagation (EuCAP)

This paper presents an exponentially tapered dielectric loaded probe. The backlobe of the probe is significantly reduced without increase the aperture size. The VSWR is less than 1.4 in the whole X band. The E field and current distribution are presented, which indicate the principle of the novel probe. The nominal radar cross-section (RCS) is below −25 dBsm in the whole frequency range. The performance...

article

Axially Steered Spots of Near-Field Fresnel Zone Plate Lens With Sweeping Frequency

Zhiping Li, Zhengpeng Wang, Jianhua Wu, Hua Tian

IEEE Antennas and Wireless Propagation Letters > 2014 > 13 > 955 - 958

The frequency performance of near-field fresnel zone plate (NFFZP) is of fundamental interest in electromagnetic field. An NFFZP lens is designed to focus a spherical wave at a spot. The spots of NFFZP lens are electronically steered forward and backward on the axis according to the operating frequency. Several nonlinear formulas are derived to describe the spots movement with sweeping frequency....

article

Reconfigurable Parallel Coupled Band Notch Resonator With Wide Tuning Range

Zhengpeng Wang, James R. Kelly, Peter S. Hall, Alejandro L. Borja, more

IEEE Transactions on Industrial Electronics > 2014 > 61 > 11 > 6316 - 6326

This paper presents a new form of reconfigurable band notch resonator with a wide tuning range. The whole structure consists of a through line and two parallel coupled resonators. This paper presents an accurate lumped element equivalent circuit for the parallel coupled resonator. The mechanism giving rise to the wide tuning range is also investigated. The first harmonic of the fundamental stop-band...

chapter

Design of a planar ultra-wideband monopole antenna with WLAN band-Notched Characteristic

Dong Li, Shaohui Quan, Zhengpeng Wang

2008 Asia-Pacific Microwave Conference > 1 - 4

2008 Asia Pacific Microwave Conference

In this paper, a printed hexagon antenna with band-notch function is designed for high rate, short range wireless communication. The band rejection performance is realized by embedding an arc slot on the hexagon patch .Guideline for designing antenna with band rejection characteristic is described. The proposed antenna presents nearly omnidirectional radiation patterns and wideband impedance matching...

article

Correlation of electronic structures and crystal structures with photocatalytic properties of undoped, N-doped and I-doped TiO2

Mingce Long, Weimin Cai, Zhengpeng Wang, Guangzeng Liu

Chemical Physics Letters > 2006 > 420 > 1-3 > 71-76

We have carried out the first-principle calculations based on density functional theory on undoped, N-doped and I-doped anatase TiO ₂ . It was found that there are three new bands in the band gap for both doped TiO ₂ , which is the explanation for their visible light respondency. The band potentials of I-doped TiO ₂ shift downwards and should have a stronger oxidation power...

article

Photocatalytic degradation of phenol in aqueous nitrogen-doped TiO2 suspensions with various light sources

Zhengpeng Wang, Weimin Cai, Xiaoting Hong, Xiaolian Zhao, more

Applied Catalysis B: Environmental > 2005 > 57 > 3 > 223-231

In this study, the nitrogen-doped TiO ₂ polycrystalline powders were synthesized by calcination of the hydrolysis product of tetra-butyl titanate with ammonia. According to the XRD, SEM, XPS, UV–vis absorption and BET analysis, we found that the N-doped TiO ₂ has mesoporous structures and the nitrogen doping causes the absorption edge of TiO ₂ to shift to a lower energy region...

article

Visible-Light-Activated Nanoparticle Photocatalyst of Iodine-Doped Titanium Dioxide

Xiaoting Hong, Zhengpeng Wang, Weimin Cai, Feng Lu, more

Chemistry of Materials > 2005 > 17 > 6 > 1548 - 1552

Filter options

Publication date

Set your own date range

Publication type

article (10)
book (2)

Keywords

ANTENNA RADIATION PATTERNS (2)
BANDWIDTH (2)
HARMONIC ANALYSIS (2)
ANTENNA ARRAYS (1)
ANTENNA MEASUREMENT (1)
ANTENNA MEASUREMENTS (1)
ANTENNAS (1)
APERTURES (1)
BIOLOGICAL SYSTEM MODELING (1)
BROADBAND ANTENNAS (1)
CALIBRATION (1)
CAPACITANCE (1)
COUPLINGS (1)
DIELECTRIC LOADED WAVEGUIDE (1)
DIFFERENTIAL CIRCUITS (1)
DIRECTIVE ANTENNAS (1)
DUAL BAND (1)
EQUATIONS (1)
EQUIVALENT CIRCUITS (1)
FEEDS (1)
FILTERING (1)
FILTERING ANTENNA ARRAY (1)
FOCUSING (1)
FREQUENCY SELECTIVITY (1)
FRESNEL REFLECTION (1)
FRESNEL ZONE PLATE (1)
GAIN (1)
HARMONIC SUPPRESSION (1)
HARMONICS SUPPRESSION (1)
HORN ANTENNAS (1)
IEEE (1)
IMAGE RESOLUTION (1)
IMPEDANCE MATCHING (1)
INTEGRATED DESIGN. (1)
LENSES (1)
LIQUID METAL (1)
LOW BACK LOBE (1)
MATHEMATICAL MODEL (1)
MICROSTRIP ANTENNA ARRAYS (1)
MICROWAVE MEASUREMENTS (1)
MONOPOLE ANTENNAS (1)
MULTIMODE S-PARAMETERS (1)
NEAR FIELD (1)
NEAR-FIELD (1)
NITROGEN-DOPED TIO2 (1)
OMNIDIRECTIONAL RADIATION PATTERNS (1)
PARASITIC CIRCULAR PATCH ANTENNA (1)
PATCH ANTENNAS (1)
PATTERN RECONFIGURABLE ANTENNA (1)
PHENOL (1)
PHOTOCATALYST (1)
PLANAR ANTENNAS (1)
PLANAR ULTRA-WIDEBAND MONOPOLE ANTENNA (1)
POWER DIVIDERS (1)
POWER HARMONIC FILTERS (1)
PRINTED HEXAGON ANTENNA (1)
PROBE (1)
PROPAGATION CONSTANT (1)
RECONFIGURABLE LINEAR POLARIZATION (1)
RESONANT FREQUENCY (1)
RESONATOR FILTERS (1)
RING SLOT (1)
SCATTERING PARAMETERS (1)
SECOND ORDER (1)
SLOT ANTENNA (1)
SLOT ANTENNAS (1)
SPOT (1)
STANDARDS (1)
STRIP-LINE DISCONTINUITIES (1)
SUNLIGHT (1)
SWEEPING FREQUENCY (1)
SYMMETRIC MATRICES (1)
TEM HORN ANTENNA (1)
TUNING (1)
U-SLOT PATCH (1)
ULTRA WIDEBAND ANTENNAS (1)
ULTRA WIDEBAND COMMUNICATION (1)
UWB FREQUENCY SPECTRUM (1)
UWB WIRELESS COMMUNICATIONS (1)
VARACTORS (1)
VECTOR NETWORK ANALYZER (VNA) (1)
VISIBLE LIGHT (1)
WIDE BAND CIRCULAR ANTENNA ARRAY (1)
WIDEBAND (1)
WIDEBAND IMPEDANCE MATCHING (1)
WIRELESS LAN (1)
WLAN BAND-NOTCHED CHARACTERISTIC (1)
more

Data set

ieee (8)
Elsevier (2)
ACS (1)
Wiley (1)

INFONA - science communication portal

Search results for: Zhengpeng Wang

Parasitic circular patch antenna with continuously tunable linear polarization using liquid metal alloy

Wideband Frequency-Domain and Space-Domain Pattern Reconfigurable Circular Antenna Array

Dual-Band Patch Antenna With Filtering Performance and Harmonic Suppression

An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

Improved Multimode TRL Calibration Method for Characterization of Homogeneous Differential Discontinuities

Exponentially tapered dielectric loaded probe for accurate near field measurements

Axially Steered Spots of Near-Field Fresnel Zone Plate Lens With Sweeping Frequency

Reconfigurable Parallel Coupled Band Notch Resonator With Wide Tuning Range

Design of a planar ultra-wideband monopole antenna with WLAN band-Notched Characteristic

Correlation of electronic structures and crystal structures with photocatalytic properties of undoped, N-doped and I-doped TiO2

Photocatalytic degradation of phenol in aqueous nitrogen-doped TiO2 suspensions with various light sources

Visible-Light-Activated Nanoparticle Photocatalyst of Iodine-Doped Titanium Dioxide

Filter options

Publication date

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Zhengpeng Wang

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options