A Plastic W-Band MEMS Phase Shifter

Sammoura, Firas; Lin, Liwei

doi:10.1109/sensor.2007.4300213

Cited by 4 publications

(7 citation statements)

References 9 publications

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“…The maximum FOM was measured around 1018/dB at a frequency around 107.4 GHz. Its phase shift is larger than the one of designs [1,4,7,9,12,13]. It is important to note here that the maximum phase variation (4948) of the phase shifter appears as expected at a lower frequency of 97 GHz (as for the corresponding triple-ridge transmission-type phase shifter).…”

Section: B) Triple-ridge Reflective-type Phase Shiftermentioning

confidence: 64%

“…Figure 17 shows the measured RF frequency response in terms of loss and reflection phase variation for a frequency band between 85 GHz and 110 GHz, which was evaluated using the same MEMS chip and sets of biasing states as in Fig. 14. The triple-ridge transmission-type phase shifter shows the lowest dissipated power at its nominal frequency and outperforms designs [4,9,12,13] in terms of FOM and minimum number of tuning elements. At this frequency, the output reflection phase varies between 08 and 3778 and the loss is always better than 3.74 dB.…”

Section: B) Triple-ridge Reflective-type Phase Shiftermentioning

confidence: 96%

“…Table 1 compares the proposed phase shifter designs with several W-band phase shifter topologies already presented in the literature and each of them based on an alternative implementation concept and fabrication technology. The triple-ridge transmission-type phase shifter shows the lowest dissipated power at its nominal frequency and outperforms designs [4, 9, 12, 13] in terms of FOM and minimum number of tuning elements. The triple-ridge reflective-type phase shifter outperforms any other previously reported W-band phase shifter in terms of maximum FOM and minimum number of tuning elements.…”

Section: Reflective-type Phase Shiftersmentioning

confidence: 99%

“…This concept was first introduced by Daneshmand et al [11] for the application of a waveguide switch at K and Ku-bands. Later, Sammoura et al [12] demonstrated a metalized plastic W-band phase shifter tuned by deformable membranes with a maximum phase shift of 110° and an IL of 3.5 dB (31.4°/dB) at 95 GHz. A transmission-type phase shifter based on a dielectric rod waveguide and an analogue-tunable high-impedance surface was presented in [13] and showed a maximum phase shift of 32° and an IL around 7.5 dB (4.3°/dB).…”

Section: Introductionmentioning

confidence: 99%

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Continuously variable W-band phase shifters based on MEMS-actuated conductive fingers

Psychogiou

Hesselbarth

et al. 2013

Int. J. Microw. Wireless Technol.

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This paper presents four continuously variable W-band phase shifters in terms of design, fabrication, and radiofrequency (RF) characterization. They are based on low-loss ridge waveguide resonators tuned by electrostatically actuated highly conductive rigid fingers with measured variable deflection between 0.38 and 8.258 (at a control voltage of 0-27.5 V). A transmission-type phase shifter based on a tunable highly coupled resonator has been manufactured and measured. It shows a maximum figure of merit (FOM) of 19.58/dB and a transmission phase variation of 708 at 98.4 GHz. The FOM and the transmission phase shift are increased to 558/dB and 1348, respectively, by the effective coupling of two tunable resonances at the same device with a single tuning element. The FOM can be further improved for a tunable reflective-type phase shifter, consisting of a transmission-type phase shifter in series with a passive resonator and a waveguide short. Such a reflective-type phase shifter has been built and tested. It shows a maximum FOM of 1018/dB at 107.4 GHz. Here, the maximum phase shift varied between 08 and 3778 for fingers deflections between 0.38 and 8.258.

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Section: B) Triple-ridge Reflective-type Phase Shiftermentioning

confidence: 64%

Section: B) Triple-ridge Reflective-type Phase Shiftermentioning

confidence: 96%

Section: Reflective-type Phase Shiftersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Continuously variable W-band phase shifters based on MEMS-actuated conductive fingers

Psychogiou

Hesselbarth

et al. 2013

Int. J. Microw. Wireless Technol.

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“…The two-cavity resonator experiences a shift in resonant frequency upon deforming the membranes. Figure 1b is a transmission line model for the tunable filter where the inductive metal planes are modeled as parallel inductive shunts of impedance, X, and the resonant cavities are modeled as transmission lines of electrical length h 1 and h 2, respectively (Sammoura and Lin 2007). In this 2-cavity design, h 1 equals h 2 and X 1 equals X 3 due to symmetry (d 1 = d 3 ).…”

Section: Introductionmentioning

confidence: 99%

Micromachined W-band polymeric tunable iris filter

Sammoura

Lin

2011

Microsyst Technol

Self Cite

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A tunable filter working in the W-band spectrum has been successfully demonstrated using a combined plastic molding and electroplating process. The prototype filter architecture has two deformable membranes of 1.6 mm in diameter on top of a WR-10 waveguide based, two-cavity, polymeric iris filter. The membranes can be actively adjusted to deform and alter the cavity geometry concurrently for frequency tuning applications. The tunable filter was simulated using High Frequency Structure Simulator and theoretically analyzed using the perturbation method. Experimentally, a prototype band-pass filter has bandwidth of 4.05 GHz centered at 94.79 GHz and a minimum insertion loss of 2.37 dB with return loss better than 15 dB. As a tunable filter, a total of 2.59 GHz center frequency change has been recorded when the membranes deflected from 50 lm into, to 150 lm out of the waveguide. These results imply that the demonstrated tunable filter could be potentially applicable for waveguide-based mm-wave systems.

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