Paragon Communications is focused on developing unique technologies for wide-band wireless communications. It applies unique patented technologies to the development of and production of efficient RF (radio frequency) power amplifiers (PA) and communication systems for the wireless communication market.
Paragon has developed the XNN® technology which provides a significant increase to the dynamic range of amplifiers as well as improvement in their efficiency, while simultaneously achieving substantial cost savings.

The eXcess eNvelope eNhancement, XNN® is a breakthrough technology that provides essential, dramatic improvement in efficiency, output power, heat dissipation and size. The technology is applicable to all forms of wireless modulations and transmissions, which have high peak to average ratio, the most important of them being OFDM, CDMA, WCDMA and Multi-carrier GSM.
However, XNN® and QuMoNTM, being envelope processors, are thus indifferent to output power and to carrier frequency and have been easily applied to multiple PA’s.
Thus, the technology supports a wide range of frequencies (2.4GHz–11GHz), as well as power levels of 18dBm and up to 48dBm.

* Where increased out power is required
* Where heat dissipation is critical
* Where power efficiency is crucial
* Where DC current consumption is limited
* Where a single low voltage power supply is mandatory
* Where Watts/mm2 is crucial

The immediate application of the technology is therefore:

· PAs for WLAN chipsets for the IEEE802.11 a/g standards
· PAs for Wi-Max for the IEEE802.16 –2004 and 802.16e and the emerging 802.20 standards. The company has already licensed its technology for these standards to one of the larger companies in this area.
· PAs for cellular base stations and for top-of-tower stations

The XNN® for WLAN and WiMax Chipset

As use-time is a key obstacle to wide and convenient use of PDA and cellular handsets that incorporate WLAN capability, the XNN® is considered an enabler to this market by nearly doubling of use-time. This is due to the fact that WLAN uses Orthogonal Frequency Division Multiplexing (OFDM) modulation, for which increase of amplifier dynamic range is imperative. Therefore it may potentially become an enabling technology for WLAN in PDAs and handsets (802.11a & 802.11g, and 802.16-2004/e) and Wi-Max future applications.

Cellular BTS
Cellular BTS
802.16/802.11 CPE
802.16 BTS
Expected Performance 4G
>= 6V
>= 4V
/\ Pout
1.15 dB
3.1 dB
5.2 dB
4.4 dB/1.9 dB
6.9 dB
/\ Efficiency

The XNN® for Base Stations

XNN® improves efficiency by nearly 50%, at the same time allowing for reduction of 30-50% in the number of power transistors, which are the most expensive components in the LPA. This allows for a reduction of parts count, volume, and costs per watt, as well as energy costs. In addition, the number of subscribers an XNN-enabled base station can support can rise, which translates into greater revenues for the cellular operator.


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