A terahertz full-duplex co-local oscillator solid-state front-end transmitting circuit is disclosed, which belongs to the technical field of terahertz communication. The overall structure of the solid-state front-end transmitting circuit adopts a new system, wherein the circuit comprises two branches that are parallel and driven by a local oscillator source. A branched waveguide directional coupler is configured to output two driving signals provided by the same local oscillator source respectively to two branch circuits with required powers. Two transmission signals generated from the two branches are combined into one signal for transmission through an orthogonal mode coupled duplexer, so as to fulfill the construction of a full-duplex co-local oscillator solid-state front-end transmission circuit.

Provided is a conductive film for antennas, in which a conducting film and a substrate made of a polycarbonate resin material containing a polycarbonate resin are laminated, and the polycarbonate resin contains, as main constituent units, a unit (A) represented by the following formula (1) and/or a unit (B) represented by the following formula (2). The conductive film for antennas has low dielectric characteristics and bendability, can form an antenna with a low transmission loss, and has excellent adhesion to the conducting film.

##STR00001##

(In the formula (1), R.sub.1 and R.sub.2 each independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, and R.sub.3 and R.sub.4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom.)

##STR00002##

(In the formula (2), R.sup.1 and R.sup.2 each independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, R.sup.3 and R.sup.4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom, R.sup.3 represents a halogen atom, an alkyl group having 1 to 20 carbon atoms, or a cycloalkyl group having 3 to 20 carbon atoms, and n represents an integer of 0 to 10.)

Provided is a conductive film for antennas, in which a conducting film and a substrate made of a polycarbonate resin material containing a polycarbonate resin are laminated, and the polycarbonate resin contains, as main constituent units, a unit (A) represented by the following formula (1) and/or a unit (B) represented by the following formula (2). The conductive film for antennas has low dielectric characteristics and bendability, can form an antenna with a low transmission loss, and has excellent adhesion to the conducting film.

##STR00001##

(In the formula (1), R.sub.1 and R.sub.2 each independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, and R.sub.3 and R.sub.4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom.)

##STR00002##

(In the formula (2), R.sup.1 and R.sup.2 each independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, R.sup.3 and R.sup.4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom, R.sup.3 represents a halogen atom, an alkyl group having 1 to 20 carbon atoms, or a cycloalkyl group having 3 to 20 carbon atoms, and n represents an integer of 0 to 10.)

In an antenna design, a metal frame of an electronic device and a printed circuit board (PCB) form a slot antenna radiator, where two common mode (CM) slot antenna modes of the slot antenna radiator are excited through anti-symmetrical feeding, so that when dual resonances and wideband coverage are implemented, specific absorption ratio (SAR) values in the two CM slot antenna modes are close.

In an antenna design, a metal frame of an electronic device and a printed circuit board (PCB) form a slot antenna radiator, where two common mode (CM) slot antenna modes of the slot antenna radiator are excited through anti-symmetrical feeding, so that when dual resonances and wideband coverage are implemented, specific absorption ratio (SAR) values in the two CM slot antenna modes are close.

An antenna module includes a control board having a control circuit, an antenna board on the control board and having a shield through hole and a plurality of first antenna patch conductors, a signal conductor on the control board and the antenna board, a frame body surrounding the first antenna patch conductors and separating the first antenna patch conductors from each other, a metal film covering at least an outer surface or an inner surface of the frame body, and a filter electrically connected to the shield through hole. The control or antenna board includes an internal antenna opposing the first antenna patch conductors. When seen in a plan view, the shield through hole is located between the first antenna patch conductors. A resin having a higher dielectric constant than air is located is surrounded by the frame body such that the first antenna patch conductors are coated with resin.

An antenna module includes a control board having a control circuit, an antenna board on the control board and having a shield through hole and a plurality of first antenna patch conductors, a signal conductor on the control board and the antenna board, a frame body surrounding the first antenna patch conductors and separating the first antenna patch conductors from each other, a metal film covering at least an outer surface or an inner surface of the frame body, and a filter electrically connected to the shield through hole. The control or antenna board includes an internal antenna opposing the first antenna patch conductors. When seen in a plan view, the shield through hole is located between the first antenna patch conductors. A resin having a higher dielectric constant than air is located is surrounded by the frame body such that the first antenna patch conductors are coated with resin.

A blade antenna comprising: an upper blade element made of conductive, planar material having a profile that curves upwardly from a centrally-located feed point; and a lower blade element made of conductive, planar material having a profile that curves downwardly from the feed point, wherein the lower blade element is configured to be connected to a ground and has a thickness that is at least three times a thickness of the upper blade element, and wherein the curved profiles of the upper and lower blade elements are disposed with respect to one another so as to form a tapered slot on each side of the feed point.

An antenna package according to an embodiment includes a plurality of antenna units including first antenna units and second antenna units, a circuit board electrically connected to the antenna units. The circuit board includes a core layer including a first surface and a second surface facing each other, a first circuit wiring disposed on the first surface of the core layer and electrically connected to the first antenna units, and a second circuit wiring distributed on the first and second surfaces of the core layer and electrically connected to the second antenna units. Antenna units of different resonance frequencies can be efficiently included in the package using the circuit wiring design.

An antenna package according to an embodiment includes a plurality of antenna units including first antenna units and second antenna units, a circuit board electrically connected to the antenna units. The circuit board includes a core layer including a first surface and a second surface facing each other, a first circuit wiring disposed on the first surface of the core layer and electrically connected to the first antenna units, and a second circuit wiring distributed on the first and second surfaces of the core layer and electrically connected to the second antenna units. Antenna units of different resonance frequencies can be efficiently included in the package using the circuit wiring design.