Impact analysis of silicon and bondwires on an on-chip antenna

Gentner, Philipp K.; Adalan, Ayse; Scholtz, Arpad L.; Mecklenbräuker, Christoph F.

doi:10.1109/eucap.2012.6206043

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…An on-chip antenna with a silicon substrate has low antenna gain. [22][23][24][25][26][27] The reduction in antenna gain is due to the absorption of a radio wave by a silicon substrate because of low resistance. Figure 2 shows the simulated current distribution characteristics obtained by radiation test with electromagnetic analysis using a highfrequency structure simulator (HFSS).…”

Section: Design Of the On-chip Antennamentioning

confidence: 99%

“…[22][23][24][25] In other methods, an antenna structure with wire bonding can reduce loss by placing it at a certain distance from the silicon substrate. 26,27) Although these on-chip antennas improve the antenna gain by approximately 3-5 dB, the frequency is too high to be applied in implantable devices. A low-frequency radio wave of around 300 MHz is suitable for such devices because a high-frequency radio wave is absorbed by the body.…”

Section: Introductionmentioning

confidence: 99%

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High-gain on-chip antenna using a sapphire substrate for implantable wireless medical systems

Okabe

Akita

Ishida

2014

Jpn. J. Appl. Phys.

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This paper presents a high-gain on-chip antenna using a sapphire substrate for implantable wireless medical systems. The antenna model is based on a dipole and the antenna elements are appropriately rolled for impedance matching. The center frequency of the fabricated on-chip antenna was measured as 360 MHz. The return loss was −3.58 dB and the input impedance was 190.5 − j74.7 Ω at 360 MHz. The maximum antenna gain of the fabricated on-chip antenna was −29.2 dBi. The on-chip antenna using a sapphire substrate achieved a 12.9 dB higher gain than that using a silicon substrate and successfully induced signal transmission at a distance of 10 cm with a transmitter chip. The implemented on-chip antenna can improve the power efficiency of implantable wireless medical systems by 95%.

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Section: Design Of the On-chip Antennamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-gain on-chip antenna using a sapphire substrate for implantable wireless medical systems

Okabe

Akita

Ishida

2014

Jpn. J. Appl. Phys.

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“…In [21], where exemplary dipoles have been simulated on a CMOS layer stack, it has been shown that the lossy substrate reduces the Q-factor of the antenna and therefore supports a wideband communication scheme, even when the aperture of the antenna is very small.…”

Section: On-chip Antennasmentioning

confidence: 99%

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

Gentner¹,

Langwieser²,

Scholtz³

et al. 2013

J Embedded Systems

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In this contribution, we describe and analyse a miniature wireless radio frequency identification (RFID) chip with on-chip antennas (OCA) and ultra wideband (UWB) signalling by real-world measurements. With the on-chip antenna approach, no external antennas are required, and the size of the overall tag is identical to the size of the chip alone (3.5 mm × 1 mm). The chip is powered through inductive coupling and controlled by an RFID signal at 866 MHz in the downlink, while the uplink transmits a quaternary pulse-position-modulated (4-PPM) UWB signal at 5.64 GHz with pulses having a duration in the order of nanoseconds. In this contribution, the hybrid or asymmetric communication scheme between prototype chip and reader, the embedded OCA, and the measurement setup are described. The prototype achieves 4-PPM bit rate of 126 Mbit/s based on a pulse-train transmission with a duration of 10 μs. The small size, high data rate, and fine time resolution of the UWB impulse radio offer new features and sensing capabilities for future RFID-like applications.

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