High-Isolation, Low Cross-Polarization, Dual- Polarization, Hybrid Feed Microstrip Patch Array Antenna for MPAR Application

Saeidi-Manesh, Hadi; Zhang, Guifu

doi:10.1109/tap.2018.2811780

Cited by 63 publications

(27 citation statements)

References 18 publications

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“…An antenna subsystem which consists of an antenna and an orthogonal-mode transducer (OMT) is an essential subsystem for the polarimetric microwave radiometer system. In such a system, the isolation should always be large enough between two orthogonal polarizations, which is critical to achieve low cross-polarization levels [12][13][14]. Conventionally, the antenna and the OMT are fabricated separately and then interconnected with the waveguide flange.…”

Section: Introductionmentioning

confidence: 99%

3-D Printed Antenna Subsystem With Dual-Polarization and its Test in System Level for Radiometer Applications

Chu

Cao

et al. 2020

IEEE Access

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A 3-D printed antenna subsystem, which proves its effectiveness in cost-& weight-reduction and reliability improvement over conventional CNC fabrication, is proposed in this paper. The proposed structure which integrates an orthogonal-mode transducer (OMT) and a corrugated horn is fully compatible to fabrication using high temperature resistant resin Acrylonitrile Butadiene Styrene (ABS) with 3-D printing technology, as well as coating using copper with electroless metallization method. Detailed design procedures are provided and a prototype operating at X-band is designed, fabricated and measured. Over the whole operating frequency range of 11.7 GHz~12.7 GHz, measured reflection coefficients are better than-22 dB and-12 dB for different polarization directions. A very good isolation better than 60 dB is achieved between two input ports. The cross polarization level is at least 30 dB lower than the co-polarization. Moreover, the effectiveness of the fabricated antenna is also verified in a polarimetric radiometer system. INDEX TERMS Three-dimensional (3-D) printing, dual-polarization, orthogonal-mode transducer (OMT), horn antenna, radiometer.

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Section: Introductionmentioning

confidence: 99%

3-D Printed Antenna Subsystem With Dual-Polarization and its Test in System Level for Radiometer Applications

Chu

Cao

et al. 2020

IEEE Access

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“…Owing to increased sensor connectivity among multiple devices, an unavoidable level of microwave interference exists and thus potentially causes a significant degradation in the sensors’ performance [ 45 , 46 , 47 , 48 ]. To avoid performance degradation, the use of antennas with polarization diversity is considered to be one of the promising techniques to facilitate multiple microwave sensor operation with a reliable interference rejection [ 49 , 50 , 51 , 52 , 53 ]. There are typically four types of antenna polarizations, such as horizontal polarization (HP), vertical polarization (VP), right-hand circular polarization (RHCP), and left-hand polarization (LHCP).…”

Section: Introductionmentioning

confidence: 99%

Dual-Polarized Multi-Channel 24 GHz Radar Sensor Antenna for High Channel-to-Channel Isolation

Kim

Noh

Lee

et al. 2020

Sensors

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This article presents a dual-polarized, high gain multi-beam and high T/Rx channel-to-channel isolation antenna module for 24 GHz sensor applications. The proposed antenna is configured to support 2-Tx and 2-Rx channels with a pair of vertically polarized (VP) radiation pattern and a pair of horizontally polarized (HP) radiation pattern. Further, each linearly polarized T/Rx antenna is configured by 2 × 4 array with a multi-layer integrated feed network, resulting in four sets of 2 × 4 array antennas fabricated within a single printed circuit board (PCB). Since multiple RF channels must be ensured with minimal interference, high antenna-to-antenna, including Tx-to-Tx, Rx-to-Rx, and Tx-to-Rx port isolations in the proposed antenna are achieved by multi-layered feed network and four sets of T-shaped magnetic walls. To verify the performance of the proposed structure, a 2-Tx and 2-Rx antenna module was fabricated at 24 GHz. The fabricated antenna showed a measured maximum 10-dB impedance bandwidth of 3.9% with a maximum measured gain of 11.7 dBi, considering both Tx and Rx. Further, the measured channel-to-channel isolations were always better than 35.6 dB at 24 GHz.

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“…For this reason, increasing the port-to-port isolation of microstrip antenna arrays could be achieved by applying dedicated feeding networks that utilise compensation of the crosstalk between the array ports by means of the pairwise anti-phased feeding technique where couples of radiators which are the image mirror one of another are fed by currents shifted by 180 • in the phase [13][14][15][16][17][18]. The application of this technique contributes to an increase in isolation to over 50 dB [16][17][18] and polarisation purity to more than 36 dB [19]. In the case of multi-element uniform antenna arrays, applying parallel feeding with multiple and even power division further improvement of the port-to-port isolation could be obtained by successive mirror imaging and feeding with 180 • phase-shifted currents of the entire radiator groups.…”

Section: Introductionmentioning

confidence: 99%

On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation

Wójcik

Surma

Нога

et al. 2020

Sensors

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The paper describes the process of designing a dual-polarised linear antenna array with enhanced port-to-port isolation, with the example of a four-element array with isolation better than 60 dB for the U-NII 5.15–5.925 GHz band. As a single antenna, dual-polarised electromagnetically coupled microstrip antennas were used with port-to-port isolation not exceeding 25 dB. A significant improvement in the isolation of the array was achieved thanks to the application of a dedicated feeding network. On the basis of theoretical analysis, a mathematical model describing port-to-port isolation was developed. Circuit and full-wave simulations were carried out to show the influence of electromagnetic couplings between antennas and/or the microstrip lines of the feeding network and the selection of phase shifters/power dividers on the isolation. The fabricated prototype is characterised by a gain of about 14 dBi, polarisation purity of at least −27 dB within the main lobe and close to expectations isolation better than 57 dB within the whole operational band.

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High-Isolation, Low Cross-Polarization, Dual- Polarization, Hybrid Feed Microstrip Patch Array Antenna for MPAR Application

Cited by 63 publications

References 18 publications

3-D Printed Antenna Subsystem With Dual-Polarization and its Test in System Level for Radiometer Applications

3-D Printed Antenna Subsystem With Dual-Polarization and its Test in System Level for Radiometer Applications

Dual-Polarized Multi-Channel 24 GHz Radar Sensor Antenna for High Channel-to-Channel Isolation

On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation

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