Improved broadband dumb-bell-shaped phase shifter using multi-section stubs

Zheng, Shao Yong; Yeung, Sai Ho; Chan, Wing Shing; Man, K.F.; Leung, S.H.

doi:10.1049/el:20083364

Cited by 36 publications

(28 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parallel stub combination consists of two shunt stubs, with one being an open circuit while the other is a short circuit. Transmission path 1 is a half wavelength transmission line loaded with parallel open/short stubs, which is similar to the previous design described in [17]. To achieve similar frequency response compared to transmission path 1, transmission path 2 uses a similar half wavelength transmission line loaded with parallel open/short stubs and a uniform 50-Ω delay line, which is totally different from the reported structures in [17]- [20].…”

Section: A Broadband Differential Phase Shifter Using Parallel Open/mentioning

confidence: 99%

“…Transmission path 1 is a half wavelength transmission line loaded with parallel open/short stubs, which is similar to the previous design described in [17]. To achieve similar frequency response compared to transmission path 1, transmission path 2 uses a similar half wavelength transmission line loaded with parallel open/short stubs and a uniform 50-Ω delay line, which is totally different from the reported structures in [17]- [20]. For the phase shifter under consideration, the differential phase shift is defined as the difference between the phases of signals that are transmitted through two paths.…”

Section: A Broadband Differential Phase Shifter Using Parallel Open/mentioning

confidence: 99%

“…Although it has the advantages of excellent performance and compact size, the multilayer structure cannot be fabricated at low cost due to difficulty in alignment; it may also cause incompatibility with other components during the circuit integration due to the locations of the input/output ports at different planar planes. Parallel open/short stub combination was first introduced in [17] for the implementation of broadband differential phase shifter. Multisection stubs were used to widen the bandwidth of a 45 • phase shifter to 100%.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Differential RF Phase Shifter With Harmonic Suppression

Zheng

Chan

2014

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

For the first time, a differential phase shifter with harmonic suppression is proposed. Not only does the proposed structure provide a constant differential phase shift over a wide bandwidth, but it also has good harmonic rejection. Compared to the existing coupled-line phase shifters, the proposed stub-loaded transmission line configurations show good performance, with simplicity in both design and fabrication. Design formulas for the structure are derived using an analytical technique. Optimal design parameters for typical differential phase shifts which are independent of substrate used and operating frequency are provided to allow for a quick design procedure. To illustrate the principles, a broadband 45 • phase shifter with harmonic suppression is designed, fabricated, and measured. It achieved excellent performance with small insertion loss, small phase deviation within the desired bandwidth, and good out-of-band rejection.Index Terms-Harmonic suppression, parallel open/short stubs, phase shifter, stub-loaded transmission line.

show abstract

Section: A Broadband Differential Phase Shifter Using Parallel Open/mentioning

confidence: 99%

Section: A Broadband Differential Phase Shifter Using Parallel Open/mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Differential RF Phase Shifter With Harmonic Suppression

Zheng

Chan

2014

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

show abstract

“…A combination of a half wavelength transmission line with T shape open stub was shown to give a constant differential phase shift over a wide bandwidth [5]. Open and short stubs are used to achieve constant phase shift by providing certain phase alignment [6].…”

Section: Introductionmentioning

confidence: 99%

Design of a wideband phase shifter using loaded element

Liu

Zhang

Pan

et al. 2016

2016 Progress in Electromagnetic Research Symposium (PIERS)

View full text Add to dashboard Cite

This paper presents a novel transmission line which has a constant phase shifter over a wide band, referenced to a uniform transmission line. The novel transmission line is loaded with lumped element. Compared with the conventional coupled line phase shifter, the configuration shows good performance with simplicity in both design and fabrication. And the use of lumped elements make the size more compact, especially for low band phase shifter design. To verify the configuration, a 90 degree phase shifter using a transmission line loaded with a capacitor and an inductor is designed. Excellent performance is achieved with small insertion loss and phase deviation over a bandwidth of 116%. The operating frequency ranges from 824 MHz to 2690 MHz, covering the bands of mobile communication 2G, 3G and 4G.

show abstract

“…But, the existence of a defected structure on the ground is a disadvantageous factor for encapsulation. Besides, technologies, such as substrate integrated waveguide, metamaterials, and multisection stubs technique, can also be used to develop phase shifters [6][7][8][9]. However, either a limited relative bandwidth or large size of those designed phase shifters makes them have no value in practical application for UWB systems.…”

Section: Introductionmentioning

confidence: 99%

Planar Ultra-Wideband Phase Shifter Using a Novel Type of Artificial Transmission Line

Geng¹,

Wang²,

Zong³

2015

PIER C

View full text Add to dashboard Cite

Abstract-An ultra-wide band 45 • phase shifter based on a new planar artificial transmission line which can be used for UWB communication systems is presented. The planar artificial transmission line is composed of host line, grounded interdigital capacitors and meandered-line inductors. The phase shifter was measured to have a bandwidth about 114.7% (2.9 GHz to 10.7 GHz) for a maximum phase deviation of 2.9 • , a maximum insertion loss of 1.2 dB, a minimum return loss of 13 dB and a compact size of 16.35 mm × 5.2 mm.

show abstract

Improved broadband dumb-bell-shaped phase shifter using multi-section stubs

Cited by 36 publications

References 3 publications

Differential RF Phase Shifter With Harmonic Suppression

Differential RF Phase Shifter With Harmonic Suppression

Design of a wideband phase shifter using loaded element

Planar Ultra-Wideband Phase Shifter Using a Novel Type of Artificial Transmission Line

Contact Info

Product

Resources

About