A wideband, 172-way suspended stripline beam forming network for frequency scanning array

Takeuchi, Norio; Watanabe, Shinji; Mizobuchi, Akira; Ishida, Osami

doi:10.1109/aps.1987.1150032

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, f 1 and f 2 are 7.75 GHz and 9.75 GHz, respectively. When substituting the scanning angle of 30 o into (11) and 12, d s should be smaller than 20.5 mm in the calculation. Here, we set d s to be 17 mm which is half wavelength of the central operating frequency of 8.75 GHz.…”

Section: Design Of Prototype Without and With Subarray Topologymentioning

confidence: 99%

“…Due to the large radiation loss of a microstrip line, the achieved radiation efficiency is only around 20% for a prototype operating at X-band with 19 radiating elements. For the aim of efficiency improvement, different types of transmission lines with low insertion loss were investigated and implemented, including the use of striplines [10], suspended striplines [11], dielectric imagelines [12], substrate integrated waveguides (SIWs) [13], broadside-coupled suspended microstrip lines (BSML) [14], substrate integrated image guide lines [15] and spoof surface plasmon polariton transmission lines [16], [17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology

et al. 2020

View full text Add to dashboard Cite

In this paper, a new approach is proposed to improve the radiation efficiency of a frequency beam-scanning antenna. In this proposed approach, the entire antenna is divided into two subarrays and each subarray includes one primary slow-wave line. Parameters of these two primary slow-wave lines are identical to each other, to achieve identical progressive phase difference between elements within either subarray. Meanwhile, a secondary slow-wave line is designed and connected to the beginning of one of the two primary slow-wave lines, to introduce an additional phase difference between these two subarrays. The above setup provides more flexibility for the allocation of phase-delay units and thus enables a possibility to reduce the overall length and transmission loss of the slow-wave line utilized in a frequency beamscanning array, which leads to a better radiation efficiency. In order to demonstrate the above topology, a novel microstrip-to-stripline power-divider and a novel broadband magneto-electric dipole element are proposed in multilayer configurations, for the realization of a 20-element prototype centered at 8.75 GHz. A reduction of 29.2% is achieved for the overall loss compared to a conventional array when achieving a scanning range of ±30 o .

show abstract

Section: Design Of Prototype Without and With Subarray Topologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In order to reduce the transmission loss, one approach is to implement low‐loss transmission lines. In published articles, sheltered transmission structures such as suspended striplines, 2 dielectric image‐lines, 3 substrate integrated waveguides (SIWs), 4 broadside‐coupled suspended microstrip lines (BSML), 5 substrate integrated image guide lines 6 and even spoof surface plasmon polariton lines 7 are utilized for the construction of slow‐wave lines. Besides the implementation of low‐loss transmission lines, filter‐based and frequency‐dependent phase‐shifters are also proposed for loss reduction 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Dual‐layer frequency beam‐scanning antennas without specifically designed radiation elements by using tile‐configured power‐dividers

Chu

Zhu

Guo

2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

In this article, two dual‐layer frequency beam‐scanning antennas (FBSAs) without specifically designed radiation elements are proposed. For the realization of such FBSAs, two tile‐configured stripline power‐dividers with in‐phase outputs are designed. These power‐dividers enable conventional radiation elements such as the Yagi‐Uda antenna to be usable in a FBSA with the dual‐layer configuration, and therefore reduce the complexity of the overall array that is one major issue in our previous work. In the first design, the input of the array is constructed by a bilateral broadside‐coupled suspended stripline (BBSS). Specific substrate thickness is required for the connection between an SMA and the BBSS and therefore, an improvement is conducted by using a proposed broadside‐connected double‐layer coplanar waveguide (BD‐CPW) as the input. For both power‐dividers, the insertion loss is smaller than 0.25 dB, together with a phase imbalance smaller than 1°. For validation, two 20‐element FBSAs centered at 8.75 GHz with Yagi‐Uda radiation elements are designed, fabricated, and also verified in the measurement.

show abstract

“…A suspended stripline which has strip conductors on both sides of a dielectric substrate is little influenced by the characteristics of the dielectric substrate and is low-loss. Since the suspended stripline can be precisely patterned using the photoetching technique and its weight is low, it is useful for the supply circuit of array antennas and the like [1]. The directional couplers which are frequently used for the suspended stripline supply circuit include the branched stripline directional coupler, the hybrid ring coupler, and the edge-coupled stripline directional coupler.…”

Section: Introductionmentioning

confidence: 99%

An asymmetrical suspended stripline directional coupler

Miyazaki¹,

Isota²,

Takeuchi³

et al. 1998

Electron. Comm. Jpn. Pt. II

View full text Add to dashboard Cite

A wideband, 172-way suspended stripline beam forming network for frequency scanning array

Cited by 5 publications

References 0 publications

Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology

Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology

Dual‐layer frequency beam‐scanning antennas without specifically designed radiation elements by using tile‐configured power‐dividers

An asymmetrical suspended stripline directional coupler

Contact Info

Product

Resources

About