Designing Band Pass Filter for HF Radio’s Front End

2019 ◽  
Author(s):  
Lojain Syed ◽  
Syed Hamza Hasan ◽  
Hamza Rashid ◽  
Wajid Gulistan
Keyword(s):  
Band Pass Filter ◽  
Pass Filter ◽  
Front End ◽  
Band Pass

scholarly journals A Low-Voltage Multi-Band ZigBee Transceiver

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1474
Author(s):  
Zhiqun Li ◽  
Yan Yao ◽  
Zengqi Wang ◽  
Guoxiao Cheng ◽  
Lei Luo
Keyword(s):  
Frequency Synthesizer ◽  
Low Voltage ◽  
Supply Voltage ◽  
Maximum Output Power ◽  
Cmos Technology ◽  
Maximum Output ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Front End ◽  
Band Pass

This paper presents a low-voltage ZigBee transceiver covering a unique frequency band of 780/868/915/2400 MHz in 180 nm CMOS technology. The design consists of a receiver with a wideband variable-gain front end and a complex band-pass filter (CBPF) based on poles construction, a transmitter employing the two-point direct-modulation structure, a Ʃ-Δ fractional-N frequency synthesizer with two VCOs and some auxiliary circuits. The measured results show that under 1 V supply voltage, the receiver reaches −93.8 dBm and −102 dBm sensitivity for 2.4 GHz and sub-GHz band, respectively, and dissipates only 1.42 mW power. The frequency synthesizer achieves −106.8 dBc/Hz and −116.7 dBc/Hz phase noise at 1 MHz frequency offset along with 4.2 mW and 3.5 mW power consumption for 2.4 GHz and sub-GHz band, respectively. The transmitter features 2.67 dBm and 12.65 dBm maximum output power at the expense of 21.2 mW and 69.5 mW power for 2.4 GHz and sub-GHz band, respectively.

Sign in / Sign up

Export Citation Format

Share Document