SPDT discrete switch design using switchable radial stub resonator for WiMAX and LTE in 3.5 GHz band

Shairi, N. A.; Ahmad, B. H.; Wong, Peng Wen

doi:10.1109/rfm.2013.6757205

Cited by 13 publications

(18 citation statements)

References 26 publications

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“…In addition, the return loss of the measured band notches decreases compared to the simulated one which is mainly due to the current limit of the PIN diode at the ON state, where the maximum supplied voltage is 1.1 Volt [40]. Moreover, the performance of the PIN diode switch BAP64-02 decreases at higher frequencies (more than 2 GHz) as investigated in [41]. Figure 15 shows the measured gain of the proposed filtering-antenna in case 1 using ideal switches.…”

Section: Reconfigurability Configurationmentioning

confidence: 98%

A Novel Reconfigurable Uwb Filtering-Antenna With Dual Sharp Band Notches Using Double Split Ring Resonators

Alhegazi¹,

Zakaria²,

Shairi³

et al. 2017

PIER C

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Abstract-This study presents a novel technique for designing an ultra-wideband (UWB) filteringantenna with dual sharp band notches. This design is composed of a modified monopole antenna integrated with resonant structures. The monopole antenna is modified using microstrip transition between the feedline and the patch. In addition, block with a triangle-shaped slot is loaded on each side of the ordinary circular patch to produce wide bandwidth with better return loss and higher frequency skirt selectivity. The resonant structures are constructed using two double split ring resonators (DSRR) loaded above the ground plane of the antenna to produce dual band notches and filter out WiMAX (3.3-3.7 GHz) and HiperLAN2 (5.4-5.7 GHz) frequencies. The band notch position is controlled by varying the length of the DSRR. The reconfigurability feature is achieved by using two PIN diode switches employed in the two DSRR. The measured results show that the proposed filtering-antenna provides wide impedance bandwidth from 2.58 to 15.5 GHz with controllable dual sharp band notches for WiMAX and HiperLAN, peak realized gain of 4.96 dB and omnidirectional radiation pattern.

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Section: Reconfigurability Configurationmentioning

confidence: 98%

A Novel Reconfigurable Uwb Filtering-Antenna With Dual Sharp Band Notches Using Double Split Ring Resonators

Alhegazi¹,

Zakaria²,

Shairi³

et al. 2017

PIER C

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“…Layout of the Proposed SPDT switch with Switchable Open Stub Resonators Figure 7 shows the characteristics of open stub resonator based on microstrip transmission line for impedance versus width (Figure 7(a)), and attenuation pole versus width (Figure 7(b)). The graph in Figure 7(a) was calculated using (6), while the graph in Figure 7(b) was calculated using (7). The calculated values were based on the different values of width of transmission line stub selected from 1 to 10 mm.…”

Section: Open Stub Resonator In Dual Isolation Band Of Spdt Switchmentioning

confidence: 99%

“…In general, resonators in RF/microwave can be used in many applications such as antennas [1][2][3] filters [4][5], switches [6][7], amplifier [8], absorber [9] and others. These resonators are generally realized using microstrip technology where they can be implemented in different shape and size such as transmission line [10], radial [8], ring [3], [9], metamaterial [11] and coupled line [12].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Open Stub Resonator and its Application in Dual Isolation Band of SPDT Switch Design

Algumaei

Shairi

Zakaria

et al. 2016

IJECE

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In this paper, an analysis of open stub resonator is presented and its application in dual isolation band of Single Pole Double Throw (SPDT) switch is proposed. A mathematical model and the characteristic of the bandstop of the resonator were analyzed and discussed. The open stub resonator was implemented using the microstrip transmission line and able to switch between bandstop and allpass responses. Frequency bands of 2.3 and 3.5 GHz were chosen to demonstrate the dual isolation band in the switch design. The performance results of the SPDT switch showed that the isolation was greater than 30 dB, return loss was greater than 10 dB and insertion loss less than 2 dB at the center resonant frequency of 2.3 and 3.5 GHz. The potential application of the proposed dual isolation band of SPDT switch is for multi band RF front-end system such as WiMAX, LTE, WiFi and HyperLAN. Keyword:Bandstop to allpass Open stub resonator RF/Microwave switch SPDT switch Transmission line stub

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“…The use of diversity antennas have improved the performance of wireless communication systems as reported in [15][16][17][18]. For switching elements in RF switch (including DPDT switch), researchers used either microelectro-mechanicals (MEMs) [10] or solid state elements such as PIN diode [19] and field effect transistor (FET) [13,14,20]. However, MEMs switches are not suitable for high power applications due to their limited power capabilities [21].…”

Section: Introductionmentioning

confidence: 99%

“…These techniques were implemented in integrated circuit RF switches only. On the other hand, for discrete RF switches such as [19,25], it is quite hard to get high isolation (> 30 dB) if using only discrete PIN diodes and usually multiple cascaded PIN diodes are required for high isolation performance.…”

Section: Introductionmentioning

confidence: 99%

Fixed and Selectable Multiband Isolation of Double Pole Double Throw Switch Using Transmission Line Stub Resonators for Wimax and Lte

Shairi¹,

Zakaria²

2017

PIER B

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Abstract-A novel selectable multiband isolation of Double Pole Double Throw (DPDT) switch with switchable transmission line stub resonators has been proposed for applications of WiMAX and LTE in 2.3 and 3.5 GHz bands. In this paper, two DPDT switch designs are proposed; the first design is a fixed DPDT switch, and the second is a selectable DPDT switch. The second design allows selecting only one band and unselecting the other or selecting both of them. However, the first design does not allow so. The transmission line stub resonator used in this design is an open stub resonator with quarter wave of the electrical length. By using a simple mathematical model, the theory of the transmission line stub resonator was discussed where it can be cascaded and resonated at center frequencies of 2.3 and 3.5 GHz. Moreover, the cascaded transmission line stub resonators can be reconfigured between allpass and bandstop responses using discrete PIN diodes. The key advantage of the proposed DPDT with switchable transmission line stub resonators is a multiband high isolation with minimum number of PIN diodes. Therefore, the simulated and measured results showed less than 3 dB of insertion loss, greater than 10 dB of return loss and higher than 30 dB of multiband isolation in 2.3 and 3.5 GHz bands.

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SPDT discrete switch design using switchable radial stub resonator for WiMAX and LTE in 3.5 GHz band

Cited by 13 publications

References 26 publications

A Novel Reconfigurable Uwb Filtering-Antenna With Dual Sharp Band Notches Using Double Split Ring Resonators

A Novel Reconfigurable Uwb Filtering-Antenna With Dual Sharp Band Notches Using Double Split Ring Resonators

Analysis of Open Stub Resonator and its Application in Dual Isolation Band of SPDT Switch Design

Fixed and Selectable Multiband Isolation of Double Pole Double Throw Switch Using Transmission Line Stub Resonators for Wimax and Lte

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