Abstract
This paper describes a highly linear low noise amplifier (LNA) exhibiting a flexible linearity profile intended as a way to meet future flexible mobile communications standards. This has the potential of inclusion in ad-hoc software defined radio (SDR) networks where a frequency band and modulation scheme can be chosen based on the characteristics of the frequency spectrum and user requirements. The linearity profile of the LNA is tailored to cancel distortion generated as a function of the received power profile. This improves the receiver's tolerance to unwanted signals present in the frequency band of interest and reduces the requirement of coding and equalization to compensate for receiver limitations whilst increasing the available capacity. The flexible linearity profile is achieved by the use of a feedforward amplifier structure which has the capability of large distortion suppression determined by the gain and phase balances within its two loops. To ensure maximum distortion cancellation in the band, adaptive cancellation is used to maximize the cancellation of harmful distortion
| Translated title of the contribution | Flexible linearity profile low noise feedforward amplifiers for improving channel capacity |
|---|---|
| Original language | English |
| Pages (from-to) | 1567 - 1570 |
| Number of pages | 4 |
| Journal | IEEE 57th Vehicular Technology Conference, 2003 (VTC 2003-Spring) |
| Volume | 3 |
| Publication status | Published - Apr 2003 |
| Event | 57th Vehicular Technology Conference 2003 (VTC 2003-Spring) - Jeju, Korea, Republic of Duration: 1 Apr 2003 → … |
Bibliographical note
Publisher: Institute of Electrical and Electronics Engineers Inc. (IEEE)Name and Venue of Conference: 57th IEEE Vehicular Technology Conference, 2003-Spring, Jeju, Korea
Conference Organiser: IEE
Rose publication type: Conference contribution
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Contributor (Other): Institute of Electrical and Electronics Engineers (IEEE)
Keywords
- amplifiers
- ad hoc networks
- software radio