Wideband Dual-polarized Patch Antenna Research Articles

Low-Profile Wideband Dual-Polarized Patch Antenna Based on Differential-Paired Multi-Mode Arms

This paper presents a low-profile wideband, dual-polarized patch antenna using differential-paired, multi-mode arms. By employing the arrow-shaped, differential-paired arms, three modes of them are excited simultaneously, leading to a broad bandwidth. The shorting pins are uniquely inserted at the wings of the arms to obtain stable radiation patterns. Then, two pairs of arms are structured like the dipoles and a dual-polarized antenna is designed. In addition, by employing coplanar coupling feeding structures, a good wideband impedance matching is also achieved without increasing the height. For demonstration, a wideband dual-polarized patch antenna is designed and measured. Benefitting from the advantages of the multi-mode patch and symmetrical structure as a dipole antenna, the proposed dual-polarized antenna operates between 2.10–3.95 GHz, possessing a 10-dB impedance bandwidth of 61%, a profile of 0.1λ0, an average gain of 7.31 dBi, and stable radiation patterns.

A wideband dual-polarized patch antenna fed with the aperture-coupled microstrip

ABSTRACTIn this paper, a compact broadband dual-polarized stacked patch antenna with the aperture coupled microstrip feed is proposed. By adding a parasitic disc patch, the bandwidth is effectively broadened. Meanwhile, to improve the isolation at the low frequency band, a rectangular slot is etched along the diagonal line of the ground plane. The measured results show that the proposed antenna can operate from 9.6 to 22.4 GHz and the relative bandwidth is 80%. Also, the isolation within the operating frequency band is better than 15 dB and the maximum gain reaches 4.08 dBi.

A dual polarized, Ku-band patch antenna using hybrid LTCC-PCB technology

This work presents the design and fabrication of a wideband dual polarized patch antenna to be used in an array for applications such as satellite communication. Our proposed patch is made of 591 Green Tape made by Low Temperature Co-Fired Ceramic and Rogers RT5870, and is designed to work in the frequency range of 10.7–12.7 GHz. Our result shows that the one layer patch antenna increases the bandwidth up to 17% in simulation and 12.3% in experiment related to the center operation frequency band. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:202–206, 2016

Wideband Dual-Polarized Patch Antenna With Low Cross Polarization and High Isolation

A coax-feed wideband dual-polarized patch antenna with low cross polarization and high port isolation is presented in this letter. The proposed antenna contains two pairs of T-shaped slots on the two bowtie-shaped patches separately. This structure changes the path of the current and keeps the cross polarization under -40 dB. By introducing two short pins, the isolation between the two ports remains more than 38 dB in the whole bandwidth with the front-to-back ratio better than 19 dB. Moreover, the proposed antenna achieving a 10-dB return loss bandwidth of 1.70-2.73 GHz has a compact structure, thus making it easy to be extended to form an array, which can be used as a base station antenna for PCS, UMTS, and WLAN/WiMAX applications.

A WIDEBAND DUAL-POLARIZED PATCH ANTENNA WITH ELECTRIC PROBE AND MAGNETIC LOOP FEEDS

A new wideband dual-polarized patch antenna consisting of a magnetically-fed and an electrically-fed is presented in the paper. The two feeds are orthogonal to each other at the center of the ground plane and generate 0 - and 90 - polarization separately. Two pairs of L-shaped slots are etched in the radiating patch to improve the impedance bandwidth. By using a shorting pin connecting the radiating patch to the ground plane, the coupling between the two feeding ports can be reduced. With the help of circuit simulation and full wave simulation, the equivalent circuit model of the antenna is established. The simulated and measured results show that the impedance bandwidths for VSWR less than 2 of the proposed dual- polarized antenna with a proflle of are 27.3% (3.29{4.33GHz) and 19% (3.05{3.69GHz) for 0 - polarization and 90 - polarization, respectively, with a height of 0.08‚0 between radiating patch and ground plane. The measured coupling between the two ports is below i20dB over the operating band. Moreover, the maximum gain of the proposed antenna is about 8.5dBi and 6.9dBi for port 1 and port 2, respectively, over the operating band. Measured results of the fabricated antenna prototypes are in good agreement with the simulated results.