A Four-Port SiGe BiCMOS Duplexer for Ka-Band SatCom on the Move User Terminals

Shamsafar, Alireza; Boccia, Luigi; Purtova, Tatyana; Tabarani, Filipe; Arnieri, Emilio; Amendola, Giandomenico; Schumacher, Hermann

doi:10.1109/lmwc.2015.2479854

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…The main disadvantage of this strategy, precluding the fulfilment of the design scenario specifications, is that it does not allow for simultaneous Rx and Tx data transmission. Therefore, we proposed in [13] a monolithically integrated K-/Ka-band duplexer able to achieve Rx-Tx channels isolation above 11 and 20 dB across the receive and transmit bandwidths (BW), respectively. Albeit the good results, the previously proposed component could not be employed in this version of the IC for two main reasons: (i) the higher gain of the amplifiers in the current form requires a stronger isolation between the channels; (ii) an optimisation of the layout is necessary to reduce the duplexer area.…”

Section: Duplexermentioning

confidence: 99%

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Power‐efficient full‐duplex K/Ka‐band phased array front‐end

Tabarani

Boccia

Calzona

et al. 2020

IET Microwaves, Antennas & Propagation

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This study presents the first monolithically integrated full‐duplex front‐end for K/Ka satellite communication phased arrays. A 0.25 μm SiGe:C BiCMOS process was used to develop the integrated circuit. The receive and transmit channels are united into a common port through a novel duplexer. For each RF channel, the bias currents, the active channels and the power amplifier operation mode can be controlled through a serial bus. Amplitude and phase control are provided with fine granularity (65,536 states). In transmit mode, each channel provides 37.3 dB of gain with 12.9 dBm output power at 1‐dB compression. In receive mode, 33.7 dB gain is measured with a noise figure of 3.2 dB. The amplitude/phase root‐mean‐square errors within the transmit (29.5–30.8 GHz) and receive (19.7–21 GHz) bands are below 0.7 dB/6.4° and 0.26 dB/1.1°, respectively. The chip occupies 1.64×3.5thinmathspacemnormalm2 and it consumes 81 and 15.5 mW per transmit and receive channels, respectively. The use of a Doherty power amplifier with a novel dynamic adaptive bias circuit led to a 31% reduction of the total dc array power consumption.

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Section: Duplexermentioning

confidence: 99%

“…Elliptical filters are able to achieve higher isolation compared with Butterworth counterparts of the same order. The chosen filter and the above-mentioned modifications led to a very compact duplexer with 304 μm × 309 μm total area, representing only 41% of the area of the previous version [13].…”

Section: Duplexermentioning

confidence: 99%

Power‐efficient full‐duplex K/Ka‐band phased array front‐end

Tabarani

Boccia

Calzona

et al. 2020

IET Microwaves, Antennas & Propagation

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“…Two types of radiating cells were taken into account, namely the single band (Tx) and the dual-band (Tx/Rx) cell. Antennas were fed through a dog-bone slot cut in the ground [18], [19] for similar antenna configurations, was not taken into account for this work. Interestingly, the dual-band cell is fed through two independent microstrip lines thus resulting in a self-duplexing behavior which is highly effective in the design of the array beam forming network [15].…”

Section: B Radiation Characteristicsmentioning

confidence: 99%

Radiating Elements for Shared Aperture Tx/Rx Phased Arrays at K/Ka Band

Sandhu

Arnieri

Amendola

et al. 2016

IEEE Trans. Antennas Propagat.

111

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A K‐band eight‐element reconfigurable phased‐array receiver with high Tx‐band rejection

Xie,

Jin,

Sun

et al. 2024

IET Microwaves Antenna & Prop

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A K‐band eight‐element phased‐array receiver is proposed, featuring a reconfigurable beam count and high Tx‐band rejection, tailored for satellite communication applications. By precisely designing the inter‐stage and output matching networks of the four‐stage low‐noise amplifier, the Tx‐band rejection of the receiver can be effectively enhanced to align with the requirements of more than 35 dB in shared‐aperture phased‐array applications. Meanwhile, the reconfigurable power divider is meticulously designed to achieve three different operation modes, which allows the eight‐element receiver to be configured for one, two, or four simultaneous beams. In addition, an active vector‐modulated phase shifter is designed to meet the demands of precise phase shifts of phased‐array systems. Based on the proposed method, a K‐band eight‐element reconfigurable phased‐array receiver operating from 17.7 to 21.2 GHz is designed and measured. The measurement exhibits more than 35‐dB Tx‐band rejection, 21–24.5 dB for single‐channel gain, and lower than 2.6 dB for noise figure within the design bandwidth. Meanwhile, the measured root mean square (RMS) gain error and RMS phase error are confined within 0.8 dB and 3.7°, respectively.

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A Four-Port SiGe BiCMOS Duplexer for Ka-Band SatCom on the Move User Terminals

Cited by 12 publications

References 4 publications

Power‐efficient full‐duplex K/Ka‐band phased array front‐end

Power‐efficient full‐duplex K/Ka‐band phased array front‐end

Radiating Elements for Shared Aperture Tx/Rx Phased Arrays at K/Ka Band

A K‐band eight‐element reconfigurable phased‐array receiver with high Tx‐band rejection

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