A 40-GHz MMIC SPDT Bandpass Filter Integrated Switch

Chao, Shih-Fong; Kuo, Che-Chung; Tsai, Zou-Min; Wang, Huei

doi:10.1109/mwsym.2007.380512

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…Filter-integrated switch (FIS) as depicted in Figure 1 is another integrated/multifunction device. From the year 2006 onwards, numerous studies have reported filter-integrated double pole double throw (DPDT) switch [5], single pole single throw (SPST) switch [6][7][8], and SPDT switch [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In order to produce FISs and integrate BPF with SPDT switch in one device, several techniques have been used, such as dielectric resonators (DRs) [15], LC resonators [11], substrate integrated suspended line (SISL) [30], and common shorted stepped-impedance resonator (CSSIR) [25].…”

Section: Introductionmentioning

confidence: 99%

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Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Shairi¹,

Zakaria²,

Wong³

et al. 2020

PIER C

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In this paper, an absorptive filter-integrated switch (FIS) using switchable T-shape resonators is presented. The FIS was made up of two absorptive T-shape resonators and integrated with single pole double throw (SPDT) switch. A simple mathematical analysis of isolation and insertion loss of filter-integrated SPDT switch is discussed. PIN diodes were used as the switching elements for the SPDT switch and to reconfigure between the band-stop and bandpass responses. The proposed absorptive FIS design could be used for internet of things (IoT) applications such as Zigbee and Bluetooth at an operation frequency of 2.45 GHz. As a result, the proposed FIS exhibited low magnitude of insertion loss and high isolation. Therefore, the key advantages of the proposed FIS design are low insertion loss, high isolation, and good return loss at both ON-and OFF-state ports.

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Section: Introductionmentioning

confidence: 99%

“…Unfortunately, all these FISs as previously mentioned suffer from different issues. Many of them have been proposed in monolithic microwave integrated-circuit (MMIC) technology [7,8,10,12,[18][19][20]22]. While MMICs allow for most compact designs, the conventional planar circuits exhibit greater flexibility at a lower cost.…”

Section: Introductionmentioning

confidence: 99%

Absorptive Filter Integrated Single Pole Double Throw Switch Using Switchable T-Shape Resonator for Iot Applications

Shairi¹,

Zakaria²,

Wong³

et al. 2020

PIER C

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“…To integrate switches and bandpass filters at the same chip level can not only save the additional losses caused by the off-chip interface, but also make high-level system-on-chip (SOC) integrations possible. In this paper, the concept of the filter-integrated switch in [17] is extended to design a compact MMIC single-pole-double-throw (SPDT) [18] and a compact multiple-port filter-integrated switches. The hybrid filter-integrated switches in [17] are designed based on half-wavelength loaded SIRs.…”

Section: Introductionmentioning

confidence: 99%

40-GHz MMIC SPDT and Multiple-Port Bandpass Filter-Integrated Switches

Chao

Kuo

Tsai

et al. 2007

IEEE Trans. Microwave Theory Techn.

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40-GHz monolithic microwave integrated circuit (MMIC) single-pole-double-throw and multiple-port bandpass filter-integrated switches based on electronically switchable resonators are proposed. The proposed multifunction chip integrates a multiple-port switch with bandpass filter functions in a single chip. The switchable resonators are formed by quarter-wavelength stepped-impedance resonators with passive HEMT loading at one end. By properly allocating the resonant frequencies of the resonators in their on and off modes, a filter-integrated switch can perform a bandpass response with spurious suppression in the on state and achieve wideband isolation in the off state. The technique of using shared resonators is also introduced in the circuit design to reduce the overall circuit size. The results show the proposed circuits successfully integrate a MMIC switch with bandpass filter functions into a single circuit component.

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