| 1. |
- Duo, Xinzhong, et al.
(författare)
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A DC-13GHz LNA for UWB RFID applications
- 2004
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Ingår i: 22ND NORCHIP CONFERENCE, PROCEEDINGS. - 0780385101 ; , s. 241-244
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Konferensbidrag (refereegranskat)abstract
- In this paper, we present a 4-stage traveling wave lownoise amplifier for UWB RFID (ultra-wideband radiofrequency identification). This LNA covers a frequencyrange of DC - 13 CHz. The circuit is implemented with0.I5pm GaAs PHEMT chips embedded in flexible LCP(liquid crystal polymer) substrate. In the frequency range,the gain of the LNA is better than IO dB, fluctuation of thegain is less than 3dB, its noise figure is less than 4dB, SI 1and S22 are around -10 dB.
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| 2. |
- Duo, Xinzhong, et al.
(författare)
-
On-chip versus off-chip passives in multi-band radio design
- 2004
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Ingår i: ESSCIRC 2004. - NEW YORK : IEEE. - 0780384806 ; , s. 327-330
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Konferensbidrag (refereegranskat)abstract
- This paper presents on-chip versus off-chip passives in multi-band radio design. The analysis is demonstrated through several multi-band low noise amplifiers designs in SiGe BiCMOS and GaAs PHEMT. Cost-performance trade-off analysis shows that when on-chip passives are moved off chip, performance of RF circuits is always improved. However, simple RF circuits do not show obvious cost-benefits, whereas complex RF circuits such as multi-band radio can have significant cost savings by using off-chip passives.
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| 3. |
- Torikka, Tommi, et al.
(författare)
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Chip-package co-design of a concurrent LNA in system-on-package for multi-band radio applications
- 2004
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Ingår i: 54TH ELECTRONIC COMPONENTS & TECHNOLOGY CONFERENCE, VOLS 1 AND 2, PROCEEDINGS. ; , s. 1687-1692
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Konferensbidrag (refereegranskat)abstract
- In this paper, we present a chip-package co-design of a concurrent low noise amplifier (LNA) in novel liquid crystal polymer (LCP) based system-on-package module for multiband radio transceivers. The module consists of a wideband LNA covering frequency range 1 GHz - 13 GHz and a multiband pass filter. By designing an appropriate multi-band passive filter, the wideband LNA can be configurated flexibly as a multi-band LNA that works currently across any different band in the above frequency range. In this work the multiband LNA is designed for 5 GHz wireless LAN and 2.5 GHz Bluetooth standards. The module is implemented with embedded chip technologies for system-on-package, which eliminates the constraints of off-chip pad drive capability and hence improves electrical performance. The design is implemented on novel liquid crystal polymer (LCP) substrate. The quality factors of key passive components such as inductors integrated on LCP substrate with thin film technologies is better than 30. The insertion loss of the band pass filter is around 3 dB and return loss is lower than -18 dB. The gain of the wideband LNA is better than 10 dB at frequency range from I GHz to 13 GHz. and its gain is better than 10 dB. The gain of the multi-band LNA is 8.5 dB and noise figure is 5.2 dB on the selected channels.
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