Wideband out-of-phase SIW power divider with enhanced stopband

Song, Kaijun; Mo, Yuxia; Hu, Shunyong; Yang, Fan; Chen, Ningbo

doi:10.1109/ieee-iws.2013.6616702

Cited by 9 publications

(3 citation statements)

References 25 publications

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“…In [10], an eight-way radial SIW power divider is proposed, but it only works as a power divider and ignores the isolation performance. In [11], [12], an eight-way radial SIW power divider using novel probe transition is proposed. Good input matching is achieved by using novel probe transition, but output matching and isolation performance are ignored.…”

Section: Introductionmentioning

confidence: 99%

Broadband Eight-Way Substrate Integrated Waveguide Radial Power Divider/Combiner With High-Isolation

et al. 2020

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A broadband eight-way substrate integrated waveguide (SIW) radial power divider/combiner with high-isolation is presented. The step probes are utilized to achieve broadband impedance matching and improve the return loss. What's more, the star structure based on microstrip circuit is employed to improve the isolation performance. A two-layer SIW radial power divider/combiner is designed, fabricated and measured. Good agreement between simulated and measured results is achieved for the proposed power divider/combiner. The measured results show that both bandwidths of the input and output port are 25% and 20% when their return loss are lower than −15 dB. The measured output isolation is greater than 17.5 dB from 5.75 GHz to 7.85 GHz and greater than 20 dB from 6.8 GHz to 7.9 GHz. The presented eight-way SIW power divider/combiner has the advantage of wider bandwidth, lower return loss and insertion loss, and higher isolation between the outputs.

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Section: Introductionmentioning

confidence: 99%

Broadband Eight-Way Substrate Integrated Waveguide Radial Power Divider/Combiner With High-Isolation

et al. 2020

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“…In [17], a multistage twoway Gysel power divider using resistors connected with other ports was reported with 66.7% 15-dB operating bandwidth. On the other hand, the singled-ended power dividers with the additional stubs [18]- [22], slots [23], [24], and the multimode resonances [24] were designed to realize the wide bandwidth.…”

Section: Introductionmentioning

confidence: 99%

An Approach to $N$ -Stage Balanced-to-Single- Ended Out-of-Phase Power Divider With Enhanced Operating Bandwidth

Shi

Yin

Lu³

et al. 2020

IEEE Access

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In this paper, an approach to n-stage (n= 3, 4, 5. . . ) balanced-to-single-ended out-of-phase power divider is proposed, which enhances the bandwidths for port matching, isolation and common-mode suppression firstly. Compared with the traditional single-ended multistage power divider, this approach has special circuits (common-mode and isolation circuits) for improving common-mode suppression and isolation, respectively. For common-mode suppression, the 180 • microstrip line between the balanced port and the common-mode circuit composed by one parallel open stub are adopted to achieve wideband commonmode suppression. For isolation, the isolation circuits formed by cascade stage structure and parallel resistors are both adopted to improve the isolation bandwidth. The basic analysis at the center frequency is given, and for verifying the theoretical prediction, two prototypes of the 3-and 4-stage power dividers are fabricated and measured, which show 46.7% and 63% 20-dB operating bandwidths, and 0.25 dB and 0.3 dB minimum insertion loss, respectively. These two prototypes present that the 20-dB operating bandwidths are 16.7% and 33% wider than the single-stage balanced-to-single-ended power divider.INDEX TERMS Balanced-to-single-ended, common-mode suppression, isolation, n-stage, out-of-phase, power divider.

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“…The power divider is a fundamental block of an antenna array system, operating in either equal or unequal split ratios. Several SIW divider topologies which include series [10], corporate [11][12][13], multimode imaging [14], half-mode SIW (HMSIW) [15], magic-T [16], radial cavity [17], Wilkinson [18], and Gysel [19] have been reported. Each of the configurations has distinctive performance characteristics in terms of the return loss and co-phase bandwidth, phase and amplitude balance, insertion loss, and isolation.…”

Section: Introductionmentioning

confidence: 99%

Improved wideband phase balancing SIW unequal power divider design for the low side‐lobe array antennas

Shehab

Feng

Karmakar

et al. 2020

IET Microwaves Antenna & Prop

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In this paper, an eight‐way substrate integrated waveguide unequal power divider with an enhanced co‐phase bandwidth is presented, and demonstrated a potential application for the Ku‐band radiometer antennas. The proposed divider design is based on the −35 dB Chebyshev beam‐shaping algorithm to achieve at minimum −25 dB of antenna side‐lobe level (SLL) and high beam efficiency (>90%). Investigations on different unequal power splitting techniques are discussed, and an efficient method for the unequal power division is proposed, exhibiting improved co‐phase bandwidth and wideband matching. The proposed unequal eight‐way power divider demonstrates a wider co‐phase bandwidth of 10% within 10° phase error and the −15 dB return loss bandwidth of 36.8%. Furthermore, the proposed unequal divider is integrated with eight longitudinal slot radiators, designed at 18.7 GHz and exhibits low radiation loss (better than −1.3 dB). The antenna measurement results exhibit a symmetrical fan beam radiation pattern and satisfied the goal of −25 dB SLL, resulting high beam efficiency of 97% and gain of 13.45 dBi. Therefore, the proposed unequal power divider technique shows the potential to be utilised in the low SLL antenna array designs for an accurate brightness temperature measurement of radiometer systems. The application of this technique can be further extended to radar and satellite/wireless communications.

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Wideband out-of-phase SIW power divider with enhanced stopband

Cited by 9 publications

References 25 publications

Broadband Eight-Way Substrate Integrated Waveguide Radial Power Divider/Combiner With High-Isolation

Broadband Eight-Way Substrate Integrated Waveguide Radial Power Divider/Combiner With High-Isolation

An Approach to $N$ -Stage Balanced-to-Single- Ended Out-of-Phase Power Divider With Enhanced Operating Bandwidth

Improved wideband phase balancing SIW unequal power divider design for the low side‐lobe array antennas

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