摘要:
The invention relates to an electrical transmission arrangement comprising a first section of a conductor with a main extension in two planes, and a first section of a ground plane which extends essentially in parallel with the conductor section on the first side of the conductor section and has a main extension in the same two planes as the conductor section. The transmission arrangement also comprises at least one second and one third section of the said conductor, which have their main extensions in the same two planes as the first section of the conductor, the second conductor section being displaced in parallel with respect to the first conductor section, and the third conductor section being displaced in parallel with respect to the second conductor section, and at least one second and one third section of the said ground plane, which have their main extensions in the same two planes as the first section of the ground plane, the second ground plane section being displaced in parallel with respect to the first ground plane section, and the third ground plane section being displaced in parallel with respect to the second ground plane section, the said parallel displacements of conductor sections and ground plane sections being done in a direction which is at right angles to the two planes which define the main extensions of the conductor sections and ground plane sections, each conductor section being electrically connected at least to the closest of the second conductor sections, each ground plane section being electrically connected at least to the closest of the second ground plane sections on the same side of the conductor, and the conductor sections being separated from the ground plane section by a dielectric material.
摘要:
An antenna element (100) for an array antenna. The antenna element having a layered configuration comprising a first ground plane (151), a first dielectric layer (140) facing the first ground plane (151), a first planar radiation element (131) facing the first dielectric layer (140), and a feeding via hole (132) arranged electrically connected to the first planar radiation element (131) and arranged extending through the first dielectric layer (140) and through the first ground plane (151) without electrical contact. The antenna element further comprises at least one complementary set comprising a complementary dielectric layer (120) and a complementary planar radiation element (111) facing the complementary dielectric layer. The set is arranged stackable facing the first planar radiation element (131) such that a complementary dielectric layer is arranged between two radiation elements (111, 131) in the layered configuration. The first planar radiation element (131) constitutes a first continuous part of a spiral antenna and the at least one complementary planar radiation element (111) constitutes a continuation of the spiral antenna, thereby the first and the at least one complementary planar radiation elements (111, 131) constitute an effective spiral antenna.
摘要:
Microwave switch (MS) comprising an antenna branch (AB), a receive branch (RB), and a transmit branch (TB). According to one embodiment, the switch comprises a protection circuit (CPL, DTC, CTRL), which upon a high power signal (Dtc_h) being present on the antenna branch effectuates a biasing of semiconductors on both the receive branch (RB) and the transmit branch (TB). According to one embodiment PIN diodes are provided for controlling switching between the transmit and the receiv branch as well as enabling a protective mode, the control being accomplished by selectively biasing respective diodes.
摘要:
Circulator unit comprising a first member (1) in a first dielectric layer (3) and a second member (2) in second dielectric layer (4) both members being of ferro-electric material and arranged adjacent to one another, a conductive circulator pattern (10) printed on the first or second member and arranged between the first and the second member. The first substrate extends beyond the second substrate on an area where a first set of terminals is provided rendering the first set of terminals accessible. The second member extends beyond the first member on an area where a second set of terminals is provided rendering the second set of terminals accessible. The unit comprises first (7) and second ground (8) conductors arranged on each side of the first and second members and furthermore comprises at least one magnet (5, 6) or coil for providing magnetic field through the first and second member.
摘要:
The invention relates to an LDMOS transistor including a gate, source and drain, and an earth plane located under the gate, source and drain. According to the invention, the earth plane is given such an extent in the lateral direction of the transistor that an additional component of chip type can be mounted on it, whereby the LDMOS transistor and the additional component of chip type have a shared earth plane. The earth plane suitably comprises a silicon layer which is doped so that it has become conductive and can thereby constitute the earth plane for the transistor and the additional component of chip type.