Features of the development of broadband frequency mixers with suppression of the mirror channel in the range frequencies 9–27 GHz

2020 ◽  
Vol 23 (3) ◽  
pp. 68-73
Author(s):  
Grigoriy A. Uglov ◽  
Yulia V. Belova
Keyword(s):  
Field Effect Transistors ◽  
Local Oscillator ◽  
Low Noise ◽  
Package Design ◽  
Foreign Products ◽  
Image Channel ◽  
Functional Units ◽  
Noise Amplifier ◽  
Frequency Mixer ◽  
Broadband Frequency

The article is devoted to features of the development two types of broadband frequency mixers with image channel suppression in the frequency range 927 GHz. The purpose of the study is to determine the optimal ways to solve the problem of modeling complex multifunctional microwave units. The article discusses the development process of such functional units as the local oscillator amplifier, low-noise amplifier and frequency mixer. Comparisons of the calculated characteristics with the results of measurements of the manufactured models of the samples are given. Attention is also paid to the technology of manufacturing field-effect transistors, resistors and capacitors that are part of the functional units of the frequency mixer. The scientific novelty lies in the uniqueness of the product development, which includes several functional units on one crystal. As a result, two types of frequency mixers with suppression of the mirror channel in a package design have been created, which, in terms of their characteristics, can replace similar foreign products from Analog Devices.

Research and Design of a Large Bandwidth Receiver RF Front-End

2014 ◽  
Vol 926-930 ◽  
pp. 2503-2507
Author(s):  
Wen Kai Liu ◽  
Peng Wang ◽  
Jian Cui
Keyword(s):  
Communication System ◽  
Local Oscillator ◽  
Low Noise ◽  
Center Frequency ◽  
Large Bandwidth ◽  
Front End ◽  
Rf Front End ◽  
Noise Amplifier ◽  
The Stability ◽  
Rf Signal

RF front-end is an important part of the communication system. It realizes the functions such as low noise amplifier application, filtering and mixing, completes the conversion between the IF signal and the RF signal, and ensures effective communication system flexibility and versatility. In the paper, according to the superheterodyne structure, a receiver RF front-end has been designed. The total gain of the link circuit is more than 100 dB, with 50 dB AGC range, the center frequency is 750 MHz with 100MHz bandwidth, local oscillator (LO) signal with frequency 935MHz is generated by PLL and the stability is-82dBc/Hz@1KHz.

scholarly journals 245 GHz SiGe sensor system for gas spectroscopy

2015 ◽  
Vol 7 (3-4) ◽  
pp. 271-278 ◽  
Author(s):  
Klaus Schmalz ◽  
Ruoyu Wang ◽  
Wojciech Debski ◽  
Heiko Gulan ◽  
Johannes Borngräber ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Second Harmonic ◽  
Local Oscillator ◽  
Low Noise ◽  
Gas Absorption ◽  
Sensor System ◽  
Phase Locked Loops ◽  
Reference Frequency ◽  
Constant Frequency ◽  
Noise Amplifier

A 245 GHz sensor system for gas spectroscopy is presented, which includes a SiGe receiver (RX), a SiGe transmitter (TX), and a 0.6 m long gas absorption cell between the TX and RX. The integrated local oscillators of the RX and the TX are controlled by two external phase locked loops (PLLs), whose reference frequencies are swept with constant frequency offset for a low IF of the RX. The RX consists of a differential low noise amplifier (LNA), an integrated 122 GHz local oscillator (LO) with 1/64 divider, a 90° differential hybrid, and active subharmonic mixer. The TX consists of an integrated 122 GHz LO with 1/64 divider, and a frequency doubler. The RX and TX are fabricated in 0.13 µm SiGe BiCMOS with ft/fmax of 300/500 GHz. Using external dielectric lenses for the TX and RX, the absorption spectrum of gaseous methanol has been measured. The reference frequency of the TX-PLL is modulated for frequency-modulation spectroscopy. The performance of the sensor system is demonstrated by measuring the 2f absorption spectrum (second harmonic detection) of gaseous methanol.

Field Effect Transistors and Low Noise Amplifier MMICs of Monolayer Graphene

2020 ◽  
pp. 1-1
Author(s):  
C. Yu ◽  
Z.Z. He ◽  
X.B. Song ◽  
X. D. Gao ◽  
Q.B. Liu ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Monolayer Graphene ◽  
Noise Amplifier

scholarly journals Research, Design and Fabrication Microwave Modules of Receiver for NanoDragon satellite at S band

2019 ◽  
Vol 35 (2) ◽  
Author(s):  
Bui Thi Ha ◽  
Bach Gia Duong
Keyword(s):  
Research Design ◽  
Transmission Rate ◽  
Local Oscillator ◽  
High Gain ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Two Stage ◽  
Ground Station ◽  
Noise Amplifier

Abstract: In the paper, the new microwave modules of NanoDragon satellite’s receiver were designed and fabricated. Purpose of this design is not only reduce budget but also respond to frequency requirement, bandwidth and transmission rate. The microwave modules consist of low noise amplifier (LNA), mixer and local oscillator (LO). These modules operate at S band according to requirement of satellite. Firstly, each module was designed, simulated, fabricated and measured. Then they were integrated together. Output of integrated microwave modules is IF signal with bandwidth is suitable for demodulation PCM – PM (BPSK). And have high gain value conform to receiver’s requirement. Simulation result of low noise amplifier is 19.108 dB at 2.9 GHZ. Simulation result of integrating two stage LNA become 2-stage LNA have gain value over 38 dB. Gain value obtained is 11.5 dB when measurement. Integrating microwave modules result is 10.5 dB with gain value. That mean this microwave modules of receiver operated very well. LNA was very good. This subsystem can apply for NanoDragon satellite’s receiver and receiver of ground station. Keywords: Receiver, Microwave Modules of Receiver, Satellite, NanoDragon satellite, LNA, Mixer, LO, IF.

A subharmonic front-end in SiGe:C technology for 94-GHz imaging arrays

2009 ◽  
Vol 1 (4) ◽  
pp. 361-368
Author(s):  
Erik Öjefors ◽  
Johannes Borngräber ◽  
Falk Korndörfer ◽  
Ullrich Pfeiffer
Keyword(s):  
Supply Voltage ◽  
Local Oscillator ◽  
Low Noise ◽  
Conversion Gain ◽  
Imaging Arrays ◽  
Matching Networks ◽  
Front End ◽  
Current Consumption ◽  
Noise Amplifier ◽  
A Current

The design of a subharmonic downconverter for 94-GHz imaging arrays in SiGe:C technology is presented. A three-stage differential low-noise amplifier (LNA) with lumped matching networks is used together with a subharmonic mixer driven by a single-pole local-oscillator poly-phase network to form the front-end. The LNA yields 15 dB gain at 94 GHz, while the mixer provides 5 dB conversion gain over a 10 GHz IF bandwidth. The integrated downconverter provides 20 dB conversion gain at 94 GHz with an input 1-dB compression point of −31 dBm and has a current consumption of 45 mA at a 3.3 V supply voltage. The total required die area of the complete downconverter (excluding pad frame) is 0.1 mm, thus making it particularly suitable as a front-end in multi-channel receiver systems.

A Wideband Low-Noise Amplifier with Active and Passive Cross-Coupled Feedbacks

2018 ◽  
Vol E101.C (1) ◽  
pp. 82-90
Author(s):  
Chang LIU ◽  
Zhi ZHANG ◽  
Zhiping WANG
Keyword(s):  
Low Noise ◽  
Low Noise Amplifier ◽  
Noise Amplifier

A dual-band low noise amplifier

2014 ◽  
Author(s):  
Z. Zhang ◽  
Z.H. Li ◽  
W.R. Zhang ◽  
F.Y. Zhao ◽  
C.L. Chen ◽  
...  
Keyword(s):  
Low Noise ◽  
Low Noise Amplifier ◽  
Dual Band ◽  
Noise Amplifier
Sign in / Sign up

Export Citation Format

Share Document