1992 IEEE Microwave Symposium Digest MTT-S
DOI: 10.1109/mwsym.1992.188084
|View full text |Cite
|
Sign up to set email alerts
|

An FM-CW radar module with front-end switching heterodyne receiver

Abstract: Antenna A b s t r a c t Triangular coupler We have developed a 60-GHz FM-CW radar module that generates sidebands by switching a HEMT front-end. Our module also uses FM-AM conversion j heterodyne detection for FM-AM conversion noise noise reduction. The module's signal to noise Antenna ratio was 20 dB better than a previously Beat signal Mixer designed homodyne FM-CW radar module.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
11
0

Publication Types

Select...
7

Relationship

0
7

Authors

Journals

citations
Cited by 16 publications
(11 citation statements)
references
References 2 publications
0
11
0
Order By: Relevance
“…FM-AM conversion noise is the largest noise component in a homodyne radar receiver [7]. The FM-AM conversion noise is produced by unwanted envelope components resulting from transmission line effects, mixing, and frequency response limitations of the FM modulator.…”
Section: The Heterodyne Radar Sensor Configurationmentioning
confidence: 99%
See 2 more Smart Citations
“…FM-AM conversion noise is the largest noise component in a homodyne radar receiver [7]. The FM-AM conversion noise is produced by unwanted envelope components resulting from transmission line effects, mixing, and frequency response limitations of the FM modulator.…”
Section: The Heterodyne Radar Sensor Configurationmentioning
confidence: 99%
“…DC offset and amplitude and phase imbalance are caused by the six-port imbalance and the non-linear analog devices (diodes, transistors, etc) used for the I/Qmixer. The FM-AM conversion noise is produced by unwanted envelope components resulting from transmission line effects, mixing, and frequency response limitations of the FM modulator [7]. In fact DC offset, amplitude and phase imbalance and FM-AM conversion noise cause unacceptable measuring errors.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Thus alternative solutions have been developed allowing to generate the offset frequency in a part of the radar operating at a lower frequency where the generation of highly accurate signals is easier. An example for such an approach was published in [9], where a switch in the RX path has been used to modulate the received signal leading to an offset frequency equating to the switching frequency due to the on-off modulation. However, due to the switching operation, not only sidebands at the modulation frequency but also at multiples thereof are generated.…”
Section: Introductionmentioning
confidence: 99%
“…However, due to the switching operation, not only sidebands at the modulation frequency but also at multiples thereof are generated. Thus parts of the RX power are unused in [9]. Therefore in [6] it was proposed to use an in-phase/quadrature (IQ) modulator in the radar's TX path rather than using a switch to modulate the radio frequency (RF) signal.…”
Section: Introductionmentioning
confidence: 99%