Cancellation of sub-harmonic and second harmonic components to improve the linearity of a low-power consumption LNA using SiGe HBT
✍ Scribed by Flavio Iturbide-Sanchez; Hildeberto Jardon-Aguilar; Jose Alfredo Tirado-Mendez
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 230 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
Three simple methods to improve the third‐order intercept point (IP3) of a low‐noise amplifier (LNA) for personal communication systems (PCS) applications or CDMA cellular handsets are introduced. Both simulations and results from previous works in the literature are compared in order to demonstrate the effectiveness of these methods in improving the performance of the LNA in terms of linearity when low‐bias voltage is used. The LNA was designed to operate at 1.9 GHz, using a silicon germanium (SiGe) heterojunction bipolar transistor (HBT) and 2.4 V bias voltage. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 308–311, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10903