Data Sheet
Table Of Contents
- Features
- Applications
- Description
- Blockdiagram
- Characteristics
- Application Notes
- Integrators Information
- This module is approved for installation into fixed and/or mobile host platforms and must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC/ISED multi-transmitter guidelines. End users must be provided with transmitter operating conditions for satisfying RF Exposure compliance.
- Hereby, RFbeam Microwave GmbH declares that the radio equipment type K-MC4 is in compliance with Directive 2014/53/EU. The declaration of conformity may be consulted at www.rfbeam.ch.
- Outline Dimensions
- Ordering Information
- (includes Mounting Plate Type1)
- Datasheet Revision History
K-MC4 MONOPULSE RADAR TRANSCEIVER Datasheet
Application Notes
Using Monopulse Phase Comparison Features
Using multiple antennas allows discrimination of the angle of moving objects. K-MC4 uses two
receiver antennas Rx1 and Rx2.
On the right half, there are the two receiver antennas shown in
different colors. The angle detection happens in the horizontal
plane as shown in the picture.
The antenna layout results in a horizontal -6dB (IF voltage) beam
width of 30° according to Fig. 2.
The usable angle detection will be approx +/- 13°.
Please note, that the vertical beam width is narrower (12°)
because of the geometry of the antenna.
Fig. 5: Angle detection direction vs. antenna arrangement
A more detailed explanation of the effects by using two receiver channel are shown in the figure
below.
The phase shift of the received Doppler carrier waves appears between the outputs I1 and I2 or Q1
and Q2.
Object's angle in ° can be can be calculated as
=
k
=objectsangle
= phase shift Ix−Qx
k =6.7
The sign of α changes depending on the moving direction of the object (forward or backward).
© RFbeam Microwave GmbH, Schuppisstrasse 7, CH-9016 St. Gallen Page 6/14
Fig. 6: Antenna Rx1 reveives a delayed reflection
d =
13.7mm
K-MC4 (top view)
phase shift
moving object