Novel Double-Ridged Waveguide Orthomode Transducer for mm-Wave Application

Jiang, Hang; Yao, Yuan; Xiu, Tao; Cheng, Xiaohe; Wang, Caixia; Wang, Bin; Yu, Junsheng; Chen, Xiaodong

doi:10.1109/lmwc.2021.3115163

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…As with the OMT already reported [6][7][8], the branch ports of the Boifot OMT design above are also not in the same plane. Due to the limitation of machining methods, the consistency of the OMT branch port plane is almost not realized in the previous work, causing the antenna based on the OMT to be reported as only achieving single-port operation mode.…”

Section: Twisting Waveguide and Turning Waveguidementioning

confidence: 71%

“…At present, the multi-polarized antennas widely used in millimeter wave bands mostly use the combination of the orthogonal mode transducer (OMT) and horn antenna to achieve dual-polarized radiation [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. A side-arm OMT machined using computer numerically controlled (CNC) milling technology was proposed in [ 14 ], and the measured antenna bandwidth was only 14.2%.…”

Section: Introductionmentioning

confidence: 99%

“…This structure is easy to machine; however, due to the existence of high-order modes, this asymmetric OMT inevitably brings the characteristic of narrow impedance width, sacrificing the advantage of a horn antenna. For symmetric OMTs such as Boifot [ 6 ] and turnstile types, they have two symmetric planes that can suppress higher-order modes well, so it is easy to obtain broadband characteristics. In the literature [ 12 ], there was designed a dual-polarized horn antenna using a turnstile OMT that can work in the whole Ka-band.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Whole W-Band Multi-Polarization Horn Antenna Based on Boifot-Type OMT

Zhao,

Zhu,

Ding

et al. 2024

Micromachines

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A wideband multi-polarized square-horn antenna based on an orthogonal mode transducer (OMT) is developed for working in the whole W-band in this paper. The designed antenna is capable of radiating multiple polarization modes as horizontal polarization (HP) and vertical polarization (VP) when as single-port excitation and left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP) when as dual-port excitation, owing to the characteristic of the OMT with the transmitting of orthogonally polarized waves. A CNC-layered fabrication approach is proposed, which means that the antenna prototype integrating with a Boifot-type OMT, turning waveguide, twisting waveguide and phase shifter is divided into three layers along the vertical direction to be fabricated based on computerized numerical control (CNC) technology. In the design, the turning waveguide and twisting waveguide are employed to achieve plane consistency of the antenna branch ports. Furthermore, a phase shifter is designed to compensate the orthogonally polarized waves, which can keep the phase of the orthogonally polarized waves consistent in a wideband frequency range from 75 GHz to 110 GHz. A prototype is fabricated and measured to verify the performance of the proposed multi-polarization antenna, and the measured results agree well with the simulation ones. In the whole W-band, the value of return loss is better than 10 dB of all polarization modes, and the value of AR of the LHCP and RHCP is below 3.5 dB. The maximum gain of the antenna reaches up to 18.8 dBi at 110 GHz. In addition, regarding the layered structure, the possible layered assembly error analysis is discussed, which verifies the feasibility of the layered machining for this antenna.

show abstract

Section: Twisting Waveguide and Turning Waveguidementioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Whole W-Band Multi-Polarization Horn Antenna Based on Boifot-Type OMT

Zhao,

Zhu,

Ding

et al. 2024

Micromachines

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show abstract

“…The performance of double ridged waveguide OMT is mainly determined by the junction. During the optimization process, the ridges in the junction are expected to be wider by reducing the length of ridges in the square waveguide [ 16 ] . The wider ridges benefit the fabrication and mechanical performance in the millimeter wave band.…”

Section: Antenna Designmentioning

confidence: 99%

“…The symmetric OMTs performs well in bandwidth and isolation than asymmetric ones by preventing the TE 11 /TM 11 generation. Symmetric OMTs based on double ridged waveguide junction is an attractive structure in microwave band [14,15] . The operating principle of double ridged waveguide OMT is interpreted.…”

Section: Double Ridged Waveguide Omtmentioning

confidence: 99%

High‐Gain Dual Circularly Polarized Antenna for Air‐to‐Ground Wireless Link

Jiang¹,

Yao²,

Xiu³

et al. 2022

Chinese J of Electronics

Self Cite

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This paper presents an E-band reflector antenna fed by dual circularly polarized feed system. Axial displaced ellipse reflector is adopted for high gain and low blockage mechanisms. The feed system mainly composed of orthomode transducer, iris polarizer and horn antenna, and possesses dual circular polarization. The orthomode transducer offers high isolation performance in broadband by double symmetry and the iris polarizer achieves phase shift by introducing discontinuities. In addition, the ridge and iris in the feed are optimized to be wide enough to fabricate and maintain good mechanical properties in higher frequency band. The entire antenna is simulated and fabricated. The measured gain of 45 ± 1.2 dBi corresponds to about 52% efficiency. The measured results of reflection coefficients less than −18 dB, isolation over 27 dB, axial-ratio value less than 2.3 dB are achieved from 71 to 86 GHz.

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A CNC-Machined WR-2.2 Band Orthogonal Mode Transducer for a Radiometer

Zhu

Liu

et al. 2023

J Infrared Milli Terahz Waves

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Novel Double-Ridged Waveguide Orthomode Transducer for mm-Wave Application

Cited by 7 publications

References 10 publications

A Whole W-Band Multi-Polarization Horn Antenna Based on Boifot-Type OMT

A Whole W-Band Multi-Polarization Horn Antenna Based on Boifot-Type OMT

High‐Gain Dual Circularly Polarized Antenna for Air‐to‐Ground Wireless Link

A CNC-Machined WR-2.2 Band Orthogonal Mode Transducer for a Radiometer

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