A novel method for short leaky‐wave antennas to suppress the reflected wave

Wang, Chien-Jen; Guan, Hua-Lin; Jou, Christina F.

doi:10.1002/mop.10696

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…One of the approaches reuse the non-radiated power to suppress the reflected power which causes the back lobe [4][5][6]. This method can suppress the back lobe more than 10 dB; however, this method makes the antenna design become more complicated.…”

Section: Introductionmentioning

confidence: 99%

Novel Short Tapered Leaky Wave Antennas With Complementary Split Ring Resonantor for Back Lobe Suppression

Huang¹,

Huang²,

Jou³

2014

PIER

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Abstract-Two novel short tapered leaky wave antenna (LWA) designs with a complementary split ring resonator (CSRR) structure are proposed in this paper. The CSRR structure is positioned at 1/4λ g away from the open-end edge of the LWA. For one of the antenna designs, the CSRR is placed at the ground plane; for the other one, the CSRR is placed on the antenna plane. The reflected wave caused by the open-end edge of the LWA is cancelled by the reflected wave caused by the CSRR, thus, the back lobe can be effectively suppressed. The length of these two short tapered LWAs with CSRR design is only 1.2λ g at 4.3 GHz. According to the measurement results, the impedance bandwidth is 650 MHz for 7 dB return loss, which covers the range from 4.3 GHz to 4.95 GHz. The back lobe can be suppressed effectively about more than 12 dB at the whole operating frequency band. The scanning range of the main beam is about 34 • , which cover the scanning angle from 10 • to 44 • .

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Section: Introductionmentioning

confidence: 99%

Novel Short Tapered Leaky Wave Antennas With Complementary Split Ring Resonantor for Back Lobe Suppression

Huang¹,

Huang²,

Jou³

2014

PIER

Self Cite

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“…This active leaky-wave antenna is designed to achieve the difference modes with two-beam radiation pattern or the sum modes with three-beam radiation pattern in the elevation plane. Because the signal is fed from the center of the open end of each LWAs, the power combining effect of the sum (E) and difference (A) patterns [5]- [6] of the millimeterwave can be produced.…”

Section: Introductionmentioning

confidence: 99%

An Novel L-shape Active Leakly-Wave Antenna with power combining and scanning capability

Chen¹,

Wang²,

Jou³

2005 Asia-Pacific Microwave Conference Proceedings

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In this paper, an active-integrated leaky-wave antenna with power combining scanning capability is presented. This leaky-wave antenna with the novel perpendicular L-shape topology is integrated with a varactor-tuned high-electron mobility transistor (HEMT) voltage controlled oscillator (VCO) on the same plane. Changing the VCO frequency, we can control not only the dual-beam scanning angle but also derive the power combining effect with the sum (L) or difference (A) radiation patterns. The power combing effect of difference mode, which is the dual-beam pattern and the sum mode pattern, which is a 3-beam pattern, with the 3rd beam located along the middle direction (450, 1350) of the X and Y axes. The measured scanning angle is steered over a range of 24-460 for the right beam and 127-1480 for the left beam. Compared with single microstrip leaky-wave antenna, the L-shape LWAs configuration has the advantages of switchable radiation patterns as the VCO varied from 10GHz to 10.6GHz.

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“…For this reason, the radiation efficiency η RAD cannot be optimized for a given scanning angle and radiating length, resulting in low efficiency designs and in the generation of an unwanted reflected lobe (overall for short MLWAs). Many attempts have been made to reduce this reflected lobe in short MLWAs, such as the use of aperture coupled patches [65], [79], [80], conducting poles [66], [67], or printed dipoles [81], located at the output end of the LWA in order to re-radiate the energy which could not be efficiently radiated by the leaky mode along the LWA length L A (see Fig. 2.1).…”

Section: Introductionmentioning

confidence: 99%

Analysis and synthesis of leaky-wave devices in planar technology

Ros¹,

Javier²

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List of Figures 4.22 Theoretical, simulated and measured radiation patterns at the design frequency of 15 GHz for the conventional rectilinear HMLWA. 4.23 Theoretical, simulated and measured radiation patterns at the design frequency of 15 GHz for the conformal non-tapered HMLWA. 4.24 Theoretical, simulated and measured radiation patterns at the design frequency of 15 GHz for the conformal tapered HMLWA.. . 4.25 Theoretical, simulated and measured radiation patterns at the design frequency of 15 GHz for the conformal tapered SIW LWA.. .

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A novel method for short leaky‐wave antennas to suppress the reflected wave

Cited by 9 publications

References 4 publications

Novel Short Tapered Leaky Wave Antennas With Complementary Split Ring Resonantor for Back Lobe Suppression

Novel Short Tapered Leaky Wave Antennas With Complementary Split Ring Resonantor for Back Lobe Suppression

An Novel L-shape Active Leakly-Wave Antenna with power combining and scanning capability

Analysis and synthesis of leaky-wave devices in planar technology

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