Design of the Millimeter-Wave Receiver

2014 ◽  
Vol 662 ◽  
pp. 235-238
Author(s):  
Shuang Zhao ◽  
Dian Ren Chen
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
Second Harmonic ◽  
Local Oscillator ◽  
Frequency Component ◽  
High Frequency Component ◽  
Bottom Surface ◽  
Test Results ◽  
Electronic Warfare ◽  
Front End

The millimeter-wave transceiver front-end as a subsystem of high-frequency component is an important part of the radar, navigation, electronic warfare and communication systems. The millimeter receiver front-end developed herein, using the second harmonic mixer, reduces the frequency of the local oscillator. Using the bottom surface outlet ladder microstrip - waveguide structure, it strengthens the structure. Test results show that the developed front-end receiver has gain of 25dB and the transmit band is 35.5-36GHz.

Design of Millimeter-Wave Emission Component

2014 ◽  
Vol 1046 ◽  
pp. 301-304
Author(s):  
Shuang Zhao ◽  
Le Le Zhang
Keyword(s):  
Millimeter Wave ◽  
Second Harmonic ◽  
Transmission Band ◽  
Transmission Power ◽  
Test Results ◽  
Compact Structure ◽  
Emission Component ◽  
Front End ◽  
Wave Emission ◽  
Structure Test

In recent years, with the development of millimeter-wave MMIC chip, millimeter wave technology has been widely used. The millimeter-wave transmitter front-end is designed in this paper. By using second harmonic mixers, we reduce the operating frequency of the oscillator. By using the side exit microstrip - waveguide structure, we strengthen the compact structure. Test results show that the transmitter front-end transmission power is 33dB and its transmission band is 35.5-36GHz.

Design of Local Oscillator Based on DDS of High Performance Short-Wave Receiver

2013 ◽  
Vol 834-836 ◽  
pp. 1140-1144 ◽  
Author(s):  
Yong Tai Chen ◽  
Chang Jing Sun ◽  
Bin Zang ◽  
Long Cheng ◽  
Jing Tang ◽  
...  
Keyword(s):  
High Performance ◽  
Gain Control ◽  
Local Oscillator ◽  
Short Wave ◽  
Frequency Multiplier ◽  
Test Results ◽  
Frequency Range ◽  
Front End ◽  
Tracking Filter ◽  
Spurious Signals

Phase noise and spurious signals of local oscillator will affect the performance of short-wave receiver. The structure of receiver's front-end part based on DDS is introduced to realize a high-performance local oscillator of short-wave receiver. Then measures were taken to improve the LO's performance, including using external directly frequency multiplier as DDS' clock to improve the purity of frequency spectrum, tracking filter to degrade harmonics and gain control circuit to remain constant amplitude in the desired frequency range. At last, test results show that the above-mentioned measures improve the receiver's performance.

scholarly journals Switchable bandstop to allpass filter using cascaded transmission line SIW resonators in K-band

2021 ◽  
Vol 10 (5) ◽  
pp. 2617-2626
Author(s):  
Amirul Aizat Zolkefli ◽  
Noor Azwan Shairi ◽  
Badrul Hisham Ahmad ◽  
Adib Othman ◽  
Nurulhalim Hassim ◽  
...  
Keyword(s):  
Transmission Line ◽  
Wave Front ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Filter Design ◽  
Pin Diodes ◽  
Front End ◽  
Compact Size ◽  
Allpass Filter ◽  
K Band

In this paper, a switchable bandstop to allpass filter using cascaded transmission line SIW resonators is proposed. The switchable filter is performed by the switchable cascaded transmission line SIW resonators using discrete PIN diodes. Therefore, it can be used for rejecting any unwanted frequencies in the communication systems. The proposed filter design is operated in K-band and targeted for millimeter wave front end system for 5G telecommunication. Two filter designs with different orientation (design A and B) are investigated for the best performance and compact size. As a result, design B is the best by giving a maximum attenuation of 39.5 dB at 26.4 GHz with the layout size of 33×30 mm.

Galloping Characteristics of Conductor Accreted with Crescent-Shaped Ice

2012 ◽  
Vol 226-228 ◽  
pp. 158-161 ◽  
Author(s):  
Hui Xue Dang ◽  
Feng Li Yang ◽  
Xin Min Li ◽  
Jing Bo Yang
Keyword(s):  
High Frequency ◽  
Software Package ◽  
Free Stream ◽  
Low Frequency ◽  
Frequency Component ◽  
High Frequency Component ◽  
Span Length ◽  
Test Results ◽  
Frequency Components ◽  
Commercial Software Package

Accounting for the disastrous phenomena of ice-accreted conductor galloping, wind tunnel tests of LGJ630/45 conductor accreted with crescent-shaped ice are conducted. Based on the test results, conductor galloping is simulated by employing the PCL language of ANSYS commercial software package and then the influences of span lengths as well as free-stream speeds on galloping characteristics are studied. The results indicate that, conductor galloping consists several different frequency components. With the increase of span length, galloping energy moves from low-frequency component to its high-frequency counterpart, and finally high-frequency component dominates the galloping phenomenon. And with the movement of energy, galloping traces transforms from ellipse to that similar to a butterfly. With the increase of span length, the maximum cable tension first increases, next decreases sharply, and then increases again.

scholarly journals Digitally-Compensated Wideband 60 GHz Test-Bed for Power Amplifier Predistortion Experiments

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1473
Author(s):  
Martin Pospíšil ◽  
Roman Maršálek ◽  
Tomáš Götthans ◽  
Tomáš Urbanec
Keyword(s):  
Millimeter Wave ◽  
Power Amplifier ◽  
Communication Systems ◽  
High Speed ◽  
Direct Conversion ◽  
Digital Predistortion ◽  
60 Ghz ◽  
Test Bed ◽  
Front End ◽  
Predistortion Linearization

Millimeter waves will play an important role in communication systems in the near future. On the one hand, the bandwidths available at millimeter-wave frequencies allow for elevated data rates, but on the other hand, the wide bandwidth accentuates the effects of wireless front-end impairments on transmitted waveforms and makes their compensation more difficult. Research into front-end impairment compensation in millimeter-wave frequency bands is currently being carried out, mainly using expensive laboratory setups consisting of universal signal generators, spectral analyzers and high-speed oscilloscopes. This paper presents a detailed description of an in-house built MATLAB-controlled 60 GHz measurement test-bed developed using relatively inexpensive hardware components that are available on the market and equipped with digital compensation for the most critical front-end impairments, including the digital predistortion of the power amplifier. It also demonstrates the potential of digital predistortion linearization on two distinct 60 GHz power amplifiers: one integrated in a direct-conversion transceiver and an external one with 24 dBm output power.

scholarly journals 28 GHz Single-Chip Transmit RF Front-End MMIC for Multichannel 5G Wireless Communications

Symmetry ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1167
Author(s):  
Evgeny Erofeev ◽  
Vadim Arykov ◽  
Michael Stepanenko ◽  
Aleksei Voevodin ◽  
Aleksei Kogai ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Integrated Circuits ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Phase Shifter ◽  
Single Chip ◽  
Power Added Efficiency ◽  
Front End ◽  
Rf Front End ◽  
Digital Phase Shifter

Millimeter-wave wireless networks of the new fifth generation (5G) have become a primary focus in the development of the information and telecommunication industries. It is expected that 5G wireless networks will increase the data rates and reduce network latencies by an order of magnitude, which will create new telecommunication services for all sectors of the economy. New electronic components such as 28 GHz (27.5 to 28.35 GHz) single-chip transmit radio frequency (RF) front-end monolithic microwave integrated circuits (MMICs) will be required for the performance and power consumption of millimeter-wave (mm-wave) 5G communication systems. This component includes a 6-bit digital phase shifter, a driver amplifier and a power amplifier. The output power P3dB and power-added efficiency (PAE) are 29 dBm and 19.2% at 28 GHz. The phase shifter root-mean-square (RMS) phase and gain errors are 3° and 0.6 dB at 28 GHz. The chip dimensions are 4.35 × 4.40 mm.

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