Varactor-loaded transmission-line phase shifter at C -band using lumped elements

Ellinger, Frank; Jäckel, H.; Bächtold, W.

doi:10.1109/tmtt.2003.809670

Cited by 151 publications

(50 citation statements)

References 14 publications

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“…As a result, a differential phase shifter has better performance as compared to a conventional single-ended phase shifter. The transmission line in Figure 2 could be replaced by distributed low-pass structures consisting of spiral inductors and capacitors [9]. The advantage of using a transmission line instead of a spiral inductor is that a transmission line is easy to model, scalable and has better isolation between lines.…”

Section: Lnamentioning

confidence: 99%

“…In Table 1, the key results of this work are summarized and compared with other passive [9], [12], [15] and active [13], [14], [16] phase shifters in compound semiconductors and silicon. The phase shifter presented in this work has a low insertion loss (among passive phase shifters) and a high phase resolution at 60GHz.…”

Section: Rf Inputmentioning

confidence: 99%

“…Phase shifters can be designed by tuning the lumped element equivalent of a transmission line. Figure 2(a) shows a conventional varactor-loaded transmission-line phase shifter [9], [17]. It consists of a transmission line loaded with a varactor at each side.…”

Section: Introductionmentioning

confidence: 99%

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A 60GHz digitally controlled phase shifter in CMOS

Baltus

Roermund

et al. 2008

ESSCIRC 2008 - 34th European Solid-State Circuits Conference

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Abstract-This paper presents a 60GHz digitally controlled phase shifter in the 65nm CMOS technology. Using a differential varactor-loaded transmission-line architecture, the phase shifter achieves a phase resolution of 22.5°, an average insertion loss of 8.5 to 10.3dB and a return loss of better than 10dB from 55 to 65GHz. The phase shifter occupies an area of only 0.2mm 2 . To the knowledge of the authors, this is the first 60GHz digitally controlled phase shifter with a phase resolution of 22.5° in silicon reported to date. It is well suited for a 60GHz phased array.

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Section: Lnamentioning

confidence: 99%

Section: Rf Inputmentioning

confidence: 99%

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A 60GHz digitally controlled phase shifter in CMOS

Baltus

Roermund

et al. 2008

ESSCIRC 2008 - 34th European Solid-State Circuits Conference

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“…The microstrip transmitarray is rapidly used in both terrestrial and satellite communication systems because of its advantages such as high gain, low mass and volume, inexpensive manufacture, and no insertion loss of a phased array's feed network at millimeter wave frequencies [1][2][3][4]. Due to the planar array of printed patch elements, the transmitarray avoids the fabrication complexity inherent in lens antenna.…”

Section: Introductionmentioning

confidence: 99%

A Wideband Transmitarray Using Double-Petal Loop Elements

Tian¹,

Jiao²,

Zhao³

2016

PIER Letters

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Abstract-In this letter, a four-layer transmitarray operating at 9.5 GHz is designed using a doublepetal loop element as the unit cell. A configuration of the double-petal loop elements is used to increase transmission phase variation while maintaining a wide transmission magnitude bandwidth of the unit cell, and a full transmission phase range of 360 • is achieved for a transmission magnitude equals to or better than −2.4 dB. Furthermore, the oblique performance of the unit cell is also good. Then, a primefocus 676-element microstrip transmitarray with the proposed element is fabricated and measured. The highest measured gain is about 22.15 dBi at 9.8 GHz, resulting in a 31% aperture efficiency. The antenna bandwidth of 10.2% (from 9.3 to 10.3 GHz) for 1-dB gain is achieved in this design.

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“…360° 가변 리액턴스 부하를 구성하는 전송선을 π형 집중 소자로 변환하는 방법 [11] 을 [11]～ [15] . 그림 3(b)는 본 논문에서 제안하는 새로운 소형 90° branch line coupler의 구조를 보인다.…”

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Design of a Miniaturized 5.3 GHz 360° Analog Phase Shifter

Jeong¹,

Son²,

Lee³

et al. 2013

The Journal of Korean Institute of Electromagnetic Engineering

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In this paper, a design and fabrication of miniaturized 5.3 GHz reflection type 360° analog phase shifter with branch line coupler and 360° variable reactance load. In order to miniaturize phase shifter, novel branch line coupler is proposed. The novel branch line coupler is miniaturized using transformation of transmission line to T and π type equivalent circuit. The miniaturized branch line coupler has small size of above 50 % compared with conventional branch line coupler. For wide phase shift range, 360° variable reactance load structure is adopted. Especially, the structure was improved for linear phase shift by adding transmission line which acts as an impedance transformer. The improved structure was miniaturized using the equivalent lumped-element of transmission line. The fabricated phase shifter with 15×15 mm 2 shows wide phase shift of above 480°, the insertion loss of -4～-6 dB and the reflection loss of below -20 dB at 5.3 GHz under 0～10 V control voltage range.

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Varactor-loaded transmission-line phase shifter at C -band using lumped elements

Cited by 151 publications

References 14 publications

A 60GHz digitally controlled phase shifter in CMOS

A 60GHz digitally controlled phase shifter in CMOS

A Wideband Transmitarray Using Double-Petal Loop Elements

Design of a Miniaturized 5.3 GHz 360° Analog Phase Shifter

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