Case Studies
- UWB Development
- DSRC Transceiver - Electronic Toll Collection System
- Low Power ZigBee Transmitter
- WLAN Transceiver - IEEE 802.11 a/b/g
- Phase Lock Loop for UHF Radio
- Zigbee Transmitter
- Second Generation Bluetooth Transceiver
- First Generation Bluetooth Transceiver -V1.0B
- Innovative High Performance Baseband Design
- Compact and Low Power Digital IF Design
UWB Development
Abstract
Ultra wideband or UWB is a promising wireless Personal Area Networking (WPAN) technology for transmitting data at very high rates using very low power within very wide bandwidth. UWB is defined as any radio technology having a spectrum that occupies a bandwidth greater than 20 percent of the center frequency, or a bandwidth of at least 500 MHz. OTCS is developing both the baseband and RF parts of a WiMedia UWB transceiver. We have done exhaustive simulations and the results show the effectiveness of the design. We also considered different design approaches and compensation methods to achieve the required performance at low current consumption and smaller chip area.
DSRC Transceiver - Electronic Toll Collection System
Fact Sheet
| Process | 0.25 µm SOS |
|---|---|
| What | Transceiver for DSRC system |
| Challenge | To attain high output power of +13 dBm |
Low Power ZigBee Transmitter
Fact Sheet
| Process | GSMC 0.15 µm CMOS Process |
|---|---|
| What | Zigbee Transmitter consisting of IQ Modulator, PLL with on chip VCO & PA |
| Challenge | Maximum 0 dBm output Power @ low current consumption (~ 17 mA) |
WLAN Transceiver - IEEE 802.11 a/b/g
Fact Sheet
| Process | 0.11 µm CMOS |
|---|---|
| What | IEEE 802.11 a/b/g transceiver |
| Challenge | To develop full chip transceiver |
Phase Lock Loop for UHF Radio
Fact Sheet
| Process | 0.25 µm CMOS |
|---|---|
| What | Low Phase Noise PLL |
| Challenge | Low phase noise (<-90 dBc/Hz @ 12.5 KHz offset) |
Zigbee Transmitter
Fact Sheet
| Process | 0.25 µm CMOS |
|---|---|
| What | Zigbee Transmitter |
| Challenge | Fractional N PLL using 12-20 MHz reference clock, Low power consumption |
Second Generation Bluetooth Transceiver
Fact Sheet
| Process | CSM/ TSMC 0.18 µm CMOS |
|---|---|
| What | Class 2 Bluetooth Transceiver |
| Challenge | To attain high sensitivity across process, temperature and supply variations |
First Generation Bluetooth Transceiver -V1.0B
Fact Sheet
| Process | CSM 0.35 µm CMOS |
|---|---|
| What | Class 2 Bluetooth Transceiver |
| Challenge | To attain high sensitivity across process, temperature and supply variations |
Innovative High Performance Baseband Design
Abstract
High performance baseband design is indispensable for wireless communication products to succeed in the market. OTCS has strong technology know-how and rich experience to deliver state-of-the-art baseband solutions to customers, such as high speed Turbo decoder and FFT processor & Viterbi decoder for UWB applications.
Compact and Low Power Digital IF Design
Abstract
Digital intermediate frequency (IF) extends the scope of digital signal processing beyond the baseband domain out to the antenna—to the RF domain. This increases the flexibility of the system while reducing manufacturing costs. Moreover, digital frequency conversion provides greater flexibility and higher performance (in terms of attenuation and selectivity) than traditional analog techniques. Therefore, digital IF design is getting more and more popular and important. OTCS has a good track record in providing compact and low power digital IF design to customers, and the examples are Bluetooth D-IF, DSRC D-IF and advanced PHS D-IF.